Vulnerabilities > CVE-2014-2653 - Improper Input Validation vulnerability in Openbsd Openssh

#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from SuSE 11 update information. The text itself is
# copyright (C) Novell, Inc.
#

include("compat.inc");

if (description)
{
  script_id(76141);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/04");

  script_cve_id("CVE-2014-2532", "CVE-2014-2653");

  script_name(english:"SuSE 11.3 Security Update : openssh (SAT Patch Number 9357)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote SuSE 11 host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"This update for OpenSSH fixes the following issues :

  - Exit sshd normally when port is already in use.
    (bnc#832628)

  - Use hardware crypto engines where available.
    (bnc#826427)

  - Use correct options for login when it is used.
    (bnc#833605)

  - Move FIPS messages to higher debug level. (bnc#862875)

  - Fix forwarding with IPv6 addresses in DISPLAY.
    (bnc#847710)

  - Do not link OpenSSH binaries with LDAP libraries.
    (bnc#826906)

  - Parse AcceptEnv properly. (bnc#869101, CVE-2014-2532)

  - Check SSHFP DNS records even for server certificates.
    (bnc#870532, CVE-2014-2653)"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.novell.com/show_bug.cgi?id=826427"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.novell.com/show_bug.cgi?id=833605"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.novell.com/show_bug.cgi?id=847710"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.novell.com/show_bug.cgi?id=869101"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.novell.com/show_bug.cgi?id=870532"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://support.novell.com/security/cve/CVE-2014-2532.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://support.novell.com/security/cve/CVE-2014-2653.html"
  );
  script_set_attribute(attribute:"solution", value:"Apply SAT patch number 9357.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:N");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:11:openssh");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:11:openssh-askpass");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:11:openssh-askpass-gnome");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:11");

  script_set_attribute(attribute:"patch_publication_date", value:"2014/06/07");
  script_set_attribute(attribute:"plugin_publication_date", value:"2014/06/19");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2014-2020 Tenable Network Security, Inc.");
  script_family(english:"SuSE Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/SuSE/release", "Host/SuSE/rpm-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("rpm.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/SuSE/release");
if (isnull(release) || release !~ "^(SLED|SLES)11") audit(AUDIT_OS_NOT, "SuSE 11");
if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if (cpu !~ "^i[3-6]86$" && "x86_64" >!< cpu && "s390x" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "SuSE 11", cpu);

pl = get_kb_item("Host/SuSE/patchlevel");
if (isnull(pl) || int(pl) != 3) audit(AUDIT_OS_NOT, "SuSE 11.3");


flag = 0;
if (rpm_check(release:"SLED11", sp:3, cpu:"x86_64", reference:"openssh-6.2p2-0.13.1")) flag++;
if (rpm_check(release:"SLED11", sp:3, cpu:"x86_64", reference:"openssh-askpass-6.2p2-0.13.1")) flag++;
if (rpm_check(release:"SLED11", sp:3, cpu:"x86_64", reference:"openssh-askpass-gnome-6.2p2-0.13.1")) flag++;
if (rpm_check(release:"SLES11", sp:3, cpu:"x86_64", reference:"openssh-6.2p2-0.13.1")) flag++;
if (rpm_check(release:"SLES11", sp:3, cpu:"x86_64", reference:"openssh-askpass-6.2p2-0.13.1")) flag++;
if (rpm_check(release:"SLES11", sp:3, cpu:"x86_64", reference:"openssh-askpass-gnome-6.2p2-0.13.1")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get());
  else security_warning(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");

#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Fedora Security Advisory 2014-6569.
#

include("compat.inc");

if (description)
{
  script_id(74384);
  script_version("1.9");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/12");

  script_cve_id("CVE-2014-2532", "CVE-2014-2653");
  script_bugtraq_id(66355, 66459);
  script_xref(name:"FEDORA", value:"2014-6569");

  script_name(english:"Fedora 19 : openssh-6.2p2-8.fc19 (2014-6569)");
  script_summary(english:"Checks rpm output for the updated package.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Fedora host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"  - environment variables with embedded '=' or '0'
    characters are now ignored

    - prevents a server from skipping SSHFP lookup and
      forcing a new-hostkey dialog by offering only
      certificate keys

    - /etc/ssh/moduli is readable by all now

    - ssh-copy-id is run in so called legacy mode when
      SSH_COPY_ID_LEGACY variable is set

Note that Tenable Network Security has extracted the preceding
description block directly from the Fedora security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.redhat.com/show_bug.cgi?id=1077843"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.redhat.com/show_bug.cgi?id=1081338"
  );
  # https://lists.fedoraproject.org/pipermail/package-announce/2014-June/134026.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?5ea8f7ac"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected openssh package."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:openssh");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:19");

  script_set_attribute(attribute:"patch_publication_date", value:"2014/05/21");
  script_set_attribute(attribute:"plugin_publication_date", value:"2014/06/10");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2014-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Fedora Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("rpm.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || "Fedora" >!< release) audit(AUDIT_OS_NOT, "Fedora");
os_ver = eregmatch(pattern: "Fedora.*release ([0-9]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora");
os_ver = os_ver[1];
if (! ereg(pattern:"^19([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 19.x", "Fedora " + os_ver);

if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Fedora", cpu);

flag = 0;
if (rpm_check(release:"FC19", reference:"openssh-6.2p2-8.fc19")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get());
  else security_warning(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "openssh");
}

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Red Hat Security Advisory RHSA-2015:0425 and 
# CentOS Errata and Security Advisory 2015:0425 respectively.
#

include("compat.inc");

if (description)
{
  script_id(81894);
  script_version("1.8");
  script_cvs_date("Date: 2020/01/02");

  script_cve_id("CVE-2014-2653", "CVE-2014-9278");
  script_xref(name:"RHSA", value:"2015:0425");

  script_name(english:"CentOS 7 : openssh (CESA-2015:0425)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote CentOS host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Updated openssh packages that fix two security issues, several bugs,
and add various enhancements are now available for Red Hat Enterprise
Linux 7.

Red Hat Product Security has rated this update as having Moderate
security impact. Common Vulnerability Scoring System (CVSS) base
scores, which give detailed severity ratings, are available for each
vulnerability from the CVE links in the References section.

OpenSSH is OpenBSD's SSH (Secure Shell) protocol implementation. These
packages include the core files necessary for both the OpenSSH client
and server.

It was discovered that OpenSSH clients did not correctly verify DNS
SSHFP records. A malicious server could use this flaw to force a
connecting client to skip the DNS SSHFP record check and require the
user to perform manual host verification of the DNS SSHFP record.
(CVE-2014-2653)

It was found that when OpenSSH was used in a Kerberos environment,
remote authenticated users were allowed to log in as a different user
if they were listed in the ~/.k5users file of that user, potentially
bypassing intended authentication restrictions. (CVE-2014-9278)

The openssh packages have been upgraded to upstream version 6.6.1,
which provides a number of bug fixes and enhancements over the
previous version. (BZ#1059667)

Bug fixes :

* An existing /dev/log socket is needed when logging using the syslog
utility, which is not possible for all chroot environments based on
the user's home directories. As a consequence, the sftp commands were
not logged in the chroot setup without /dev/log in the internal sftp
subsystem. With this update, openssh has been enhanced to detect
whether /dev/log exists. If /dev/log does not exist, processes in the
chroot environment use their master processes for logging.
(BZ#1083482)

* The buffer size for a host name was limited to 64 bytes. As a
consequence, when a host name was 64 bytes long or longer, the
ssh-keygen utility failed. The buffer size has been increased to fix
this bug, and ssh-keygen no longer fails in the described situation.
(BZ#1097665)

* Non-ASCII characters have been replaced by their octal
representations in banner messages in order to prevent terminal
re-programming attacks. Consequently, banners containing UTF-8 strings
were not correctly displayed in a client. With this update, banner
messages are processed according to RFC 3454, control characters have
been removed, and banners containing UTF-8 strings are now displayed
correctly. (BZ#1104662)

* Red Hat Enterprise Linux uses persistent Kerberos credential caches,
which are shared between sessions. Previously, the
GSSAPICleanupCredentials option was set to 'yes' by default.
Consequently, removing a Kerberos cache on logout could remove
unrelated credentials of other sessions, which could make the system
unusable. To fix this bug, GSSAPICleanupCredentials is set by default
to 'no'. (BZ#1134447)

* Access permissions for the /etc/ssh/moduli file were set to 0600,
which was unnecessarily strict. With this update, the permissions for
/etc/ssh/moduli have been changed to 0644 to make the access to the
file easier. (BZ#1134448)

* Due to the KRB5CCNAME variable being truncated, the Kerberos ticket
cache was not found after login using a Kerberos-enabled SSH
connection. The underlying source code has been modified to fix this
bug, and Kerberos authentication works as expected in the described
situation. (BZ#1161173)

Enhancements :

* When the sshd daemon is configured to force the internal SFTP
session, a connection other then SFTP is used, the appropriate message
is logged to the /var/log/secure file. (BZ#1130198)

* The sshd-keygen service was run using the
'ExecStartPre=-/usr/sbin/sshd-keygen' option in the sshd.service unit
file. With this update, the separate sshd-keygen.service unit file has
been added, and sshd.service has been adjusted to require
sshd-keygen.service. (BZ#1134997)

Users of openssh are advised to upgrade to these updated packages,
which correct these issues and add these enhancements."
  );
  # https://lists.centos.org/pipermail/centos-cr-announce/2015-March/001725.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?9f2883d9"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected openssh packages."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2014-2653");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:openssh");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:openssh-askpass");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:openssh-clients");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:openssh-keycat");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:openssh-ldap");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:openssh-server");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:openssh-server-sysvinit");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:pam_ssh_agent_auth");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:centos:centos:7");

  script_set_attribute(attribute:"vuln_publication_date", value:"2014/03/27");
  script_set_attribute(attribute:"patch_publication_date", value:"2015/03/17");
  script_set_attribute(attribute:"plugin_publication_date", value:"2015/03/18");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2015-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"CentOS Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/CentOS/release", "Host/CentOS/rpm-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("rpm.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/CentOS/release");
if (isnull(release) || "CentOS" >!< release) audit(AUDIT_OS_NOT, "CentOS");
os_ver = pregmatch(pattern: "CentOS(?: Linux)? release ([0-9]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "CentOS");
os_ver = os_ver[1];
if (! preg(pattern:"^7([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "CentOS 7.x", "CentOS " + os_ver);

if (!get_kb_item("Host/CentOS/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);


cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "CentOS", cpu);


flag = 0;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"openssh-6.6.1p1-11.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"openssh-askpass-6.6.1p1-11.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"openssh-clients-6.6.1p1-11.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"openssh-keycat-6.6.1p1-11.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"openssh-ldap-6.6.1p1-11.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"openssh-server-6.6.1p1-11.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"openssh-server-sysvinit-6.6.1p1-11.el7")) flag++;
if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"pam_ssh_agent_auth-0.9.3-9.11.el7")) flag++;


if (flag)
{
  cr_plugin_caveat = '\n' +
    'NOTE: The security advisory associated with this vulnerability has a\n' +
    'fixed package version that may only be available in the continuous\n' +
    'release (CR) repository for CentOS, until it is present in the next\n' +
    'point release of CentOS.\n\n' +

    'If an equal or higher package level does not exist in the baseline\n' +
    'repository for your major version of CentOS, then updates from the CR\n' +
    'repository will need to be applied in order to address the\n' +
    'vulnerability.\n';
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    extra      : rpm_report_get() + cr_plugin_caveat
  );
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "openssh / openssh-askpass / openssh-clients / openssh-keycat / etc");
}

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Red Hat Security Advisory RHSA-2015:0425. The text 
# itself is copyright (C) Red Hat, Inc.
#

include("compat.inc");

if (description)
{
  script_id(81635);
  script_version("1.12");
  script_cvs_date("Date: 2019/10/24 15:35:39");

  script_cve_id("CVE-2014-2653", "CVE-2014-9278");
  script_xref(name:"RHSA", value:"2015:0425");

  script_name(english:"RHEL 7 : openssh (RHSA-2015:0425)");
  script_summary(english:"Checks the rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Red Hat host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Updated openssh packages that fix two security issues, several bugs,
and add various enhancements are now available for Red Hat Enterprise
Linux 7.

Red Hat Product Security has rated this update as having Moderate
security impact. Common Vulnerability Scoring System (CVSS) base
scores, which give detailed severity ratings, are available for each
vulnerability from the CVE links in the References section.

OpenSSH is OpenBSD's SSH (Secure Shell) protocol implementation. These
packages include the core files necessary for both the OpenSSH client
and server.

It was discovered that OpenSSH clients did not correctly verify DNS
SSHFP records. A malicious server could use this flaw to force a
connecting client to skip the DNS SSHFP record check and require the
user to perform manual host verification of the DNS SSHFP record.
(CVE-2014-2653)

It was found that when OpenSSH was used in a Kerberos environment,
remote authenticated users were allowed to log in as a different user
if they were listed in the ~/.k5users file of that user, potentially
bypassing intended authentication restrictions. (CVE-2014-9278)

The openssh packages have been upgraded to upstream version 6.6.1,
which provides a number of bug fixes and enhancements over the
previous version. (BZ#1059667)

Bug fixes :

* An existing /dev/log socket is needed when logging using the syslog
utility, which is not possible for all chroot environments based on
the user's home directories. As a consequence, the sftp commands were
not logged in the chroot setup without /dev/log in the internal sftp
subsystem. With this update, openssh has been enhanced to detect
whether /dev/log exists. If /dev/log does not exist, processes in the
chroot environment use their master processes for logging.
(BZ#1083482)

* The buffer size for a host name was limited to 64 bytes. As a
consequence, when a host name was 64 bytes long or longer, the
ssh-keygen utility failed. The buffer size has been increased to fix
this bug, and ssh-keygen no longer fails in the described situation.
(BZ#1097665)

* Non-ASCII characters have been replaced by their octal
representations in banner messages in order to prevent terminal
re-programming attacks. Consequently, banners containing UTF-8 strings
were not correctly displayed in a client. With this update, banner
messages are processed according to RFC 3454, control characters have
been removed, and banners containing UTF-8 strings are now displayed
correctly. (BZ#1104662)

* Red Hat Enterprise Linux uses persistent Kerberos credential caches,
which are shared between sessions. Previously, the
GSSAPICleanupCredentials option was set to 'yes' by default.
Consequently, removing a Kerberos cache on logout could remove
unrelated credentials of other sessions, which could make the system
unusable. To fix this bug, GSSAPICleanupCredentials is set by default
to 'no'. (BZ#1134447)

* Access permissions for the /etc/ssh/moduli file were set to 0600,
which was unnecessarily strict. With this update, the permissions for
/etc/ssh/moduli have been changed to 0644 to make the access to the
file easier. (BZ#1134448)

* Due to the KRB5CCNAME variable being truncated, the Kerberos ticket
cache was not found after login using a Kerberos-enabled SSH
connection. The underlying source code has been modified to fix this
bug, and Kerberos authentication works as expected in the described
situation. (BZ#1161173)

Enhancements :

* When the sshd daemon is configured to force the internal SFTP
session, a connection other then SFTP is used, the appropriate message
is logged to the /var/log/secure file. (BZ#1130198)

* The sshd-keygen service was run using the
'ExecStartPre=-/usr/sbin/sshd-keygen' option in the sshd.service unit
file. With this update, the separate sshd-keygen.service unit file has
been added, and sshd.service has been adjusted to require
sshd-keygen.service. (BZ#1134997)

Users of openssh are advised to upgrade to these updated packages,
which correct these issues and add these enhancements."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/errata/RHSA-2015:0425"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/security/cve/cve-2014-2653"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/security/cve/cve-2014-9278"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:openssh");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:openssh-askpass");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:openssh-clients");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:openssh-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:openssh-keycat");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:openssh-ldap");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:openssh-server");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:openssh-server-sysvinit");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:pam_ssh_agent_auth");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7.3");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7.4");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7.5");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7.6");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7.7");

  script_set_attribute(attribute:"vuln_publication_date", value:"2014/03/27");
  script_set_attribute(attribute:"patch_publication_date", value:"2015/03/05");
  script_set_attribute(attribute:"plugin_publication_date", value:"2015/03/05");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Red Hat Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list", "Host/cpu");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
include("rpm.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || "Red Hat" >!< release) audit(AUDIT_OS_NOT, "Red Hat");
os_ver = pregmatch(pattern: "Red Hat Enterprise Linux.*release ([0-9]+(\.[0-9]+)?)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Red Hat");
os_ver = os_ver[1];
if (! preg(pattern:"^7([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Red Hat 7.x", "Red Hat " + os_ver);

if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$" && "s390" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Red Hat", cpu);

yum_updateinfo = get_kb_item("Host/RedHat/yum-updateinfo");
if (!empty_or_null(yum_updateinfo)) 
{
  rhsa = "RHSA-2015:0425";
  yum_report = redhat_generate_yum_updateinfo_report(rhsa:rhsa);
  if (!empty_or_null(yum_report))
  {
    security_report_v4(
      port       : 0,
      severity   : SECURITY_WARNING,
      extra      : yum_report 
    );
    exit(0);
  }
  else
  {
    audit_message = "affected by Red Hat security advisory " + rhsa;
    audit(AUDIT_OS_NOT, audit_message);
  }
}
else
{
  flag = 0;
  if (rpm_check(release:"RHEL7", cpu:"s390x", reference:"openssh-6.6.1p1-11.el7")) flag++;

  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"openssh-6.6.1p1-11.el7")) flag++;

  if (rpm_check(release:"RHEL7", cpu:"s390x", reference:"openssh-askpass-6.6.1p1-11.el7")) flag++;

  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"openssh-askpass-6.6.1p1-11.el7")) flag++;

  if (rpm_check(release:"RHEL7", cpu:"s390x", reference:"openssh-clients-6.6.1p1-11.el7")) flag++;

  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"openssh-clients-6.6.1p1-11.el7")) flag++;

  if (rpm_check(release:"RHEL7", reference:"openssh-debuginfo-6.6.1p1-11.el7")) flag++;

  if (rpm_check(release:"RHEL7", cpu:"s390x", reference:"openssh-keycat-6.6.1p1-11.el7")) flag++;

  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"openssh-keycat-6.6.1p1-11.el7")) flag++;

  if (rpm_check(release:"RHEL7", cpu:"s390x", reference:"openssh-ldap-6.6.1p1-11.el7")) flag++;

  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"openssh-ldap-6.6.1p1-11.el7")) flag++;

  if (rpm_check(release:"RHEL7", cpu:"s390x", reference:"openssh-server-6.6.1p1-11.el7")) flag++;

  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"openssh-server-6.6.1p1-11.el7")) flag++;

  if (rpm_check(release:"RHEL7", cpu:"s390x", reference:"openssh-server-sysvinit-6.6.1p1-11.el7")) flag++;

  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"openssh-server-sysvinit-6.6.1p1-11.el7")) flag++;

  if (rpm_check(release:"RHEL7", reference:"pam_ssh_agent_auth-0.9.3-9.11.el7")) flag++;


  if (flag)
  {
    security_report_v4(
      port       : 0,
      severity   : SECURITY_WARNING,
      extra      : rpm_report_get() + redhat_report_package_caveat()
    );
    exit(0);
  }
  else
  {
    tested = pkg_tests_get();
    if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
    else audit(AUDIT_PACKAGE_NOT_INSTALLED, "openssh / openssh-askpass / openssh-clients / openssh-debuginfo / etc");
  }
}

#
# (C) Tenable Network Security, Inc.
#
# The text in the description was extracted from AIX Security
# Advisory openssh_advisory4.asc.
#

include("compat.inc");

if (description)
{
  script_id(76168);
  script_version("1.10");
  script_cvs_date("Date: 2018/11/28 22:47:41");

  script_cve_id("CVE-2014-2532", "CVE-2014-2653");
  script_bugtraq_id(66355, 66459);

  script_name(english:"AIX OpenSSH Vulnerability : openssh_advisory4.asc");
  script_summary(english:"Checks the version of the openssh client and server packages");

  script_set_attribute(attribute:"synopsis", value:"The remote AIX host has a vulnerable version of OpenSSH.");
  script_set_attribute(attribute:"description", value:
"The version of OpenSSH running on the remote host is affected by
multiple security bypass vulnerabilities :

  - sshd in OpenSSH versions before 6.6 do not properly
    support wildcards on AcceptEnv lines in sshd_config,
    which allow a remote attacker to bypass intended
    environment restrictions by using a substring located
    before a wildcard character. (CVE-2014-2532)

  - The verify_host_key function in sshconnect.c in the
    OpenSSH client for versions 6.6 and earlier allows
    remote servers to trigger the skipping of SSHFP DNS
    checking by presenting an unacceptable HostCertificate.
    (CVE-2014-2653)");
  script_set_attribute(attribute:"see_also", value:"http://aix.software.ibm.com/aix/efixes/security/openssh_advisory4.asc");
  script_set_attribute(attribute:"see_also", value:"https://www14.software.ibm.com/webapp/iwm/web/preLogin.do?source=aixbp");
  script_set_attribute(attribute:"solution", value:
"A fix is available and can be downloaded from the AIX website.

To extract the fixes from the tar file :

  zcat OpenSSH_6.0.0.6107.tar.Z | tar xvf -

IMPORTANT : If possible, it is recommended that an mksysb backup of
the system be created. Verify it is both bootable and readable before
proceeding.

To preview the fix installation :

  installp -apYd . OpenSSH_6.0.0.6107

To install the fix package :

  installp -aXYd . OpenSSH_6.0.0.6107");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:ibm:aix:5.3");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:ibm:aix:6.1");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:ibm:aix:7.1");

  script_set_attribute(attribute:"vuln_publication_date", value:"2014/03/15");
  script_set_attribute(attribute:"patch_publication_date", value:"2014/06/17");
  script_set_attribute(attribute:"plugin_publication_date", value:"2014/06/20");

  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2014-2018 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"AIX Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/AIX/lslpp", "Host/local_checks_enabled", "Host/AIX/version");

  exit(0);
}


include("aix.inc");
include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");

if ( ! get_kb_item("Host/local_checks_enabled") ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
oslevel = get_kb_item_or_exit("Host/AIX/version");
if ( oslevel != "AIX-5.3" && oslevel != "AIX-6.1" && oslevel != "AIX-7.1" )
{
  oslevel = ereg_replace(string:oslevel, pattern:"-", replace:" ");
  audit(AUDIT_OS_NOT, "AIX 5.3 / 6.1 / 7.1", oslevel);
}
if ( ! get_kb_item("Host/AIX/lslpp") ) audit(AUDIT_PACKAGE_LIST_MISSING);

flag = 0;

if (aix_check_package(release:"5.3", package:"openssh.base.client", minpackagever:"4.0.0.5200", maxpackagever:"6.0.0.6106", fixpackagever:"6.0.0.6107") > 0) flag++;
if (aix_check_package(release:"6.1", package:"openssh.base.client", minpackagever:"4.0.0.5200", maxpackagever:"6.0.0.6106", fixpackagever:"6.0.0.6107") > 0) flag++;
if (aix_check_package(release:"7.1", package:"openssh.base.client", minpackagever:"4.0.0.5200", maxpackagever:"6.0.0.6106", fixpackagever:"6.0.0.6107") > 0) flag++;
if (aix_check_package(release:"5.3", package:"openssh.base.server", minpackagever:"4.0.0.5200", maxpackagever:"6.0.0.6106", fixpackagever:"6.0.0.6107") > 0) flag++;
if (aix_check_package(release:"6.1", package:"openssh.base.server", minpackagever:"4.0.0.5200", maxpackagever:"6.0.0.6106", fixpackagever:"6.0.0.6107") > 0) flag++;
if (aix_check_package(release:"7.1", package:"openssh.base.server", minpackagever:"4.0.0.5200", maxpackagever:"6.0.0.6106", fixpackagever:"6.0.0.6107") > 0) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    extra      : aix_report_get()
  );
}
else
{
  tested = aix_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "openssh.base.client / openssh.base.server");
}

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Red Hat Security Advisory RHSA-2014:1552 and 
# CentOS Errata and Security Advisory 2014:1552 respectively.
#

include("compat.inc");

if (description)
{
  script_id(79184);
  script_version("1.13");
  script_cvs_date("Date: 2020/01/06");

  script_cve_id("CVE-2014-2532", "CVE-2014-2653");
  script_bugtraq_id(66355, 66459);
  script_xref(name:"RHSA", value:"2014:1552");

  script_name(english:"CentOS 6 : openssh (CESA-2014:1552)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote CentOS host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Updated openssh packages that fix two security issues, several bugs,
and add various enhancements are now available for Red Hat Enterprise
Linux 6.

Red Hat Product Security has rated this update as having Moderate
security impact. Common Vulnerability Scoring System (CVSS) base
scores, which give detailed severity ratings, are available for each
vulnerability from the CVE links in the References section.

OpenSSH is OpenBSD's SSH (Secure Shell) protocol implementation. These
packages include the core files necessary for both the OpenSSH client
and server.

It was discovered that OpenSSH clients did not correctly verify DNS
SSHFP records. A malicious server could use this flaw to force a
connecting client to skip the DNS SSHFP record check and require the
user to perform manual host verification of the DNS SSHFP record.
(CVE-2014-2653)

It was found that OpenSSH did not properly handle certain AcceptEnv
parameter values with wildcard characters. A remote attacker could use
this flaw to bypass intended environment variable restrictions.
(CVE-2014-2532)

This update also fixes the following bugs :

* Based on the SP800-131A information security standard, the
generation of a digital signature using the Digital Signature
Algorithm (DSA) with the key size of 1024 bits and RSA with the key
size of less than 2048 bits is disallowed after the year 2013. After
this update, ssh-keygen no longer generates keys with less than 2048
bits in FIPS mode. However, the sshd service accepts keys of size 1024
bits as well as larger keys for compatibility reasons. (BZ#993580)

* Previously, the openssh utility incorrectly set the oom_adj value to
-17 for all of its children processes. This behavior was incorrect
because the children processes were supposed to have this value set to
0. This update applies a patch to fix this bug and oom_adj is now
properly set to 0 for all children processes as expected. (BZ#1010429)

* Previously, if the sshd service failed to verify the checksum of an
installed FIPS module using the fipscheck library, the information
about this failure was only provided at the standard error output of
sshd. As a consequence, the user could not notice this message and be
uninformed when a system had not been properly configured for FIPS
mode. To fix this bug, this behavior has been changed and sshd now
sends such messages via the syslog service. (BZ#1020803)

* When keys provided by the pkcs11 library were removed from the ssh
agent using the 'ssh-add -e' command, the user was prompted to enter a
PIN. With this update, a patch has been applied to allow the user to
remove the keys provided by pkcs11 without the PIN. (BZ#1042519)

In addition, this update adds the following enhancements :

* With this update, ControlPersist has been added to OpenSSH. The
option in conjunction with the ControlMaster configuration directive
specifies that the master connection remains open in the background
after the initial client connection has been closed. (BZ#953088)

* When the sshd daemon is configured to force the internal SFTP
session, and the user attempts to use a connection other than SFTP,
the appropriate message is logged to the /var/log/secure file.
(BZ#997377)

* Support for Elliptic Curve Cryptography modes for key exchange
(ECDH) and host user keys (ECDSA) as specified by RFC5656 has been
added to the openssh packages. However, they are not enabled by
default and the user has to enable them manually. For more information
on how to configure ECDSA and ECDH with OpenSSH, see:
https://access.redhat.com/solutions/711953 (BZ#1028335)

All openssh users are advised to upgrade to these updated packages,
which contain backported patches to correct these issues and add these
enhancements."
  );
  # https://lists.centos.org/pipermail/centos-cr-announce/2014-October/001318.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?cc014a58"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected openssh packages."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2014-2532");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:openssh");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:openssh-askpass");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:openssh-clients");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:openssh-ldap");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:openssh-server");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:pam_ssh_agent_auth");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:centos:centos:6");

  script_set_attribute(attribute:"vuln_publication_date", value:"2014/03/18");
  script_set_attribute(attribute:"patch_publication_date", value:"2014/10/20");
  script_set_attribute(attribute:"plugin_publication_date", value:"2014/11/12");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2014-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"CentOS Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/CentOS/release", "Host/CentOS/rpm-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("rpm.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/CentOS/release");
if (isnull(release) || "CentOS" >!< release) audit(AUDIT_OS_NOT, "CentOS");
os_ver = pregmatch(pattern: "CentOS(?: Linux)? release ([0-9]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "CentOS");
os_ver = os_ver[1];
if (! preg(pattern:"^6([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "CentOS 6.x", "CentOS " + os_ver);

if (!get_kb_item("Host/CentOS/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);


cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "CentOS", cpu);


flag = 0;
if (rpm_check(release:"CentOS-6", reference:"openssh-5.3p1-104.el6")) flag++;
if (rpm_check(release:"CentOS-6", reference:"openssh-askpass-5.3p1-104.el6")) flag++;
if (rpm_check(release:"CentOS-6", reference:"openssh-clients-5.3p1-104.el6")) flag++;
if (rpm_check(release:"CentOS-6", reference:"openssh-ldap-5.3p1-104.el6")) flag++;
if (rpm_check(release:"CentOS-6", reference:"openssh-server-5.3p1-104.el6")) flag++;
if (rpm_check(release:"CentOS-6", reference:"pam_ssh_agent_auth-0.9.3-104.el6")) flag++;


if (flag)
{
  cr_plugin_caveat = '\n' +
    'NOTE: The security advisory associated with this vulnerability has a\n' +
    'fixed package version that may only be available in the continuous\n' +
    'release (CR) repository for CentOS, until it is present in the next\n' +
    'point release of CentOS.\n\n' +

    'If an equal or higher package level does not exist in the baseline\n' +
    'repository for your major version of CentOS, then updates from the CR\n' +
    'repository will need to be applied in order to address the\n' +
    'vulnerability.\n';
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    extra      : rpm_report_get() + cr_plugin_caveat
  );
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "openssh / openssh-askpass / openssh-clients / openssh-ldap / etc");
}

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2014:1552 and 
# Oracle Linux Security Advisory ELSA-2014-1552 respectively.
#

include("compat.inc");

if (description)
{
  script_id(78526);
  script_version("1.13");
  script_cvs_date("Date: 2019/09/30 10:58:19");

  script_cve_id("CVE-2014-2532", "CVE-2014-2653");
  script_bugtraq_id(66355, 66459);
  script_xref(name:"RHSA", value:"2014:1552");

  script_name(english:"Oracle Linux 6 : openssh (ELSA-2014-1552)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Oracle Linux host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"From Red Hat Security Advisory 2014:1552 :

Updated openssh packages that fix two security issues, several bugs,
and add various enhancements are now available for Red Hat Enterprise
Linux 6.

Red Hat Product Security has rated this update as having Moderate
security impact. Common Vulnerability Scoring System (CVSS) base
scores, which give detailed severity ratings, are available for each
vulnerability from the CVE links in the References section.

OpenSSH is OpenBSD's SSH (Secure Shell) protocol implementation. These
packages include the core files necessary for both the OpenSSH client
and server.

It was discovered that OpenSSH clients did not correctly verify DNS
SSHFP records. A malicious server could use this flaw to force a
connecting client to skip the DNS SSHFP record check and require the
user to perform manual host verification of the DNS SSHFP record.
(CVE-2014-2653)

It was found that OpenSSH did not properly handle certain AcceptEnv
parameter values with wildcard characters. A remote attacker could use
this flaw to bypass intended environment variable restrictions.
(CVE-2014-2532)

This update also fixes the following bugs :

* Based on the SP800-131A information security standard, the
generation of a digital signature using the Digital Signature
Algorithm (DSA) with the key size of 1024 bits and RSA with the key
size of less than 2048 bits is disallowed after the year 2013. After
this update, ssh-keygen no longer generates keys with less than 2048
bits in FIPS mode. However, the sshd service accepts keys of size 1024
bits as well as larger keys for compatibility reasons. (BZ#993580)

* Previously, the openssh utility incorrectly set the oom_adj value to
-17 for all of its children processes. This behavior was incorrect
because the children processes were supposed to have this value set to
0. This update applies a patch to fix this bug and oom_adj is now
properly set to 0 for all children processes as expected. (BZ#1010429)

* Previously, if the sshd service failed to verify the checksum of an
installed FIPS module using the fipscheck library, the information
about this failure was only provided at the standard error output of
sshd. As a consequence, the user could not notice this message and be
uninformed when a system had not been properly configured for FIPS
mode. To fix this bug, this behavior has been changed and sshd now
sends such messages via the syslog service. (BZ#1020803)

* When keys provided by the pkcs11 library were removed from the ssh
agent using the 'ssh-add -e' command, the user was prompted to enter a
PIN. With this update, a patch has been applied to allow the user to
remove the keys provided by pkcs11 without the PIN. (BZ#1042519)

In addition, this update adds the following enhancements :

* With this update, ControlPersist has been added to OpenSSH. The
option in conjunction with the ControlMaster configuration directive
specifies that the master connection remains open in the background
after the initial client connection has been closed. (BZ#953088)

* When the sshd daemon is configured to force the internal SFTP
session, and the user attempts to use a connection other than SFTP,
the appropriate message is logged to the /var/log/secure file.
(BZ#997377)

* Support for Elliptic Curve Cryptography modes for key exchange
(ECDH) and host user keys (ECDSA) as specified by RFC5656 has been
added to the openssh packages. However, they are not enabled by
default and the user has to enable them manually. For more information
on how to configure ECDSA and ECDH with OpenSSH, see:
https://access.redhat.com/solutions/711953 (BZ#1028335)

All openssh users are advised to upgrade to these updated packages,
which contain backported patches to correct these issues and add these
enhancements."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://oss.oracle.com/pipermail/el-errata/2014-October/004529.html"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected openssh packages."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:openssh");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:openssh-askpass");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:openssh-clients");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:openssh-ldap");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:openssh-server");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:pam_ssh_agent_auth");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:6");

  script_set_attribute(attribute:"vuln_publication_date", value:"2014/03/18");
  script_set_attribute(attribute:"patch_publication_date", value:"2014/10/16");
  script_set_attribute(attribute:"plugin_publication_date", value:"2014/10/17");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Oracle Linux Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/OracleLinux", "Host/RedHat/release", "Host/RedHat/rpm-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("rpm.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/OracleLinux")) audit(AUDIT_OS_NOT, "Oracle Linux");
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || !pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux)", string:release)) audit(AUDIT_OS_NOT, "Oracle Linux");
os_ver = pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux) .*release ([0-9]+(\.[0-9]+)?)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Oracle Linux");
os_ver = os_ver[1];
if (! preg(pattern:"^6([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Oracle Linux 6", "Oracle Linux " + os_ver);

if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Oracle Linux", cpu);

flag = 0;
if (rpm_check(release:"EL6", reference:"openssh-5.3p1-104.el6")) flag++;
if (rpm_check(release:"EL6", reference:"openssh-askpass-5.3p1-104.el6")) flag++;
if (rpm_check(release:"EL6", reference:"openssh-clients-5.3p1-104.el6")) flag++;
if (rpm_check(release:"EL6", reference:"openssh-ldap-5.3p1-104.el6")) flag++;
if (rpm_check(release:"EL6", reference:"openssh-server-5.3p1-104.el6")) flag++;
if (rpm_check(release:"EL6", reference:"pam_ssh_agent_auth-0.9.3-104.el6")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get());
  else security_warning(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "openssh / openssh-askpass / openssh-clients / openssh-ldap / etc");
}

#%NASL_MIN_LEVEL 80502

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Mandriva Linux Security Advisory MDVSA-2014:068. 
# The text itself is copyright (C) Mandriva S.A.
#

include("compat.inc");

if (description)
{
  script_id(73444);
  script_version("1.7");
  script_cvs_date("Date: 2019/08/02 13:32:55");

  script_cve_id("CVE-2014-2532", "CVE-2014-2653");
  script_bugtraq_id(66355, 66459);
  script_xref(name:"MDVSA", value:"2014:068");

  script_name(english:"Mandriva Linux Security Advisory : openssh (MDVSA-2014:068)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Mandriva Linux host is missing one or more security
updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Updated openssh packages fixes security vulnerabilities :

sshd in OpenSSH before 6.6 does not properly support wildcards on
AcceptEnv lines in sshd_config, which allows remote attackers to
bypass intended environment restrictions by using a substring located
before a wildcard character (CVE-2014-2532).

Matthew Vernon reported that if a SSH server offers a HostCertificate
that the ssh client doesn't accept, then the client doesn't check the
DNS for SSHFP records. As a consequence a malicious server can disable
SSHFP-checking by presenting a certificate (CVE-2014-2653)."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://advisories.mageia.org/MGASA-2014-0143.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://advisories.mageia.org/MGASA-2014-0166.html"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:openssh");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:openssh-askpass");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:openssh-askpass-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:openssh-askpass-gnome");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:openssh-clients");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:openssh-server");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mandriva:business_server:1");

  script_set_attribute(attribute:"patch_publication_date", value:"2014/04/09");
  script_set_attribute(attribute:"plugin_publication_date", value:"2014/04/10");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Mandriva Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/Mandrake/release", "Host/Mandrake/rpm-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("rpm.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Mandrake/release")) audit(AUDIT_OS_NOT, "Mandriva / Mandake Linux");
if (!get_kb_item("Host/Mandrake/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if (cpu !~ "^(amd64|i[3-6]86|x86_64)$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Mandriva / Mandrake Linux", cpu);


flag = 0;
if (rpm_check(release:"MDK-MBS1", cpu:"x86_64", reference:"openssh-5.9p1-6.3.mbs1")) flag++;
if (rpm_check(release:"MDK-MBS1", cpu:"x86_64", reference:"openssh-askpass-5.9p1-6.3.mbs1")) flag++;
if (rpm_check(release:"MDK-MBS1", cpu:"x86_64", reference:"openssh-askpass-common-5.9p1-6.3.mbs1")) flag++;
if (rpm_check(release:"MDK-MBS1", cpu:"x86_64", reference:"openssh-askpass-gnome-5.9p1-6.3.mbs1")) flag++;
if (rpm_check(release:"MDK-MBS1", cpu:"x86_64", reference:"openssh-clients-5.9p1-6.3.mbs1")) flag++;
if (rpm_check(release:"MDK-MBS1", cpu:"x86_64", reference:"openssh-server-5.9p1-6.3.mbs1")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get());
  else security_warning(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");

#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from SuSE 11 update information. The text itself is
# copyright (C) Novell, Inc.
#

if (NASL_LEVEL < 3000) exit(0);

include("compat.inc");

if (description)
{
  script_id(76140);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/04");

  script_cve_id("CVE-2014-2532", "CVE-2014-2653");

  script_name(english:"SuSE 11.3 Security Update : openssh (SAT Patch Number 9357)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote SuSE 11 host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"This update for OpenSSH fixes the following issues :

  - Exit sshd normally when port is already in use.
    (bnc#832628)

  - Use hardware crypto engines where available.
    (bnc#826427)

  - Use correct options for login when it is used.
    (bnc#833605)

  - Move FIPS messages to higher debug level. (bnc#862875)

  - Fix forwarding with IPv6 addresses in DISPLAY.
    (bnc#847710)

  - Do not link OpenSSH binaries with LDAP libraries.
    (bnc#826906)

  - Parse AcceptEnv properly. (bnc#869101, CVE-2014-2532)

  - Check SSHFP DNS records even for server certificates.
    (bnc#870532, CVE-2014-2653)"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.novell.com/show_bug.cgi?id=826427"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.novell.com/show_bug.cgi?id=833605"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.novell.com/show_bug.cgi?id=847710"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.novell.com/show_bug.cgi?id=869101"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.novell.com/show_bug.cgi?id=870532"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://support.novell.com/security/cve/CVE-2014-2532.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://support.novell.com/security/cve/CVE-2014-2653.html"
  );
  script_set_attribute(attribute:"solution", value:"Apply SAT patch number 9357.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:N");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:11:openssh");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:11:openssh-askpass");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:11:openssh-askpass-gnome");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:11");

  script_set_attribute(attribute:"patch_publication_date", value:"2014/06/06");
  script_set_attribute(attribute:"plugin_publication_date", value:"2014/06/19");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2014-2020 Tenable Network Security, Inc.");
  script_family(english:"SuSE Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/SuSE/release", "Host/SuSE/rpm-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("rpm.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/SuSE/release");
if (isnull(release) || release !~ "^(SLED|SLES)11") audit(AUDIT_OS_NOT, "SuSE 11");
if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if (cpu !~ "^i[3-6]86$" && "x86_64" >!< cpu && "s390x" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "SuSE 11", cpu);

pl = get_kb_item("Host/SuSE/patchlevel");
if (isnull(pl) || int(pl) != 3) audit(AUDIT_OS_NOT, "SuSE 11.3");


flag = 0;
if (rpm_check(release:"SLED11", sp:3, cpu:"i586", reference:"openssh-6.2p2-0.13.1")) flag++;
if (rpm_check(release:"SLED11", sp:3, cpu:"i586", reference:"openssh-askpass-6.2p2-0.13.1")) flag++;
if (rpm_check(release:"SLED11", sp:3, cpu:"i586", reference:"openssh-askpass-gnome-6.2p2-0.13.1")) flag++;
if (rpm_check(release:"SLES11", sp:3, cpu:"i586", reference:"openssh-6.2p2-0.13.1")) flag++;
if (rpm_check(release:"SLES11", sp:3, cpu:"i586", reference:"openssh-askpass-6.2p2-0.13.1")) flag++;
if (rpm_check(release:"SLES11", sp:3, cpu:"i586", reference:"openssh-askpass-gnome-6.2p2-0.13.1")) flag++;
if (rpm_check(release:"SLES11", sp:3, cpu:"s390x", reference:"openssh-6.2p2-0.13.1")) flag++;
if (rpm_check(release:"SLES11", sp:3, cpu:"s390x", reference:"openssh-askpass-6.2p2-0.13.1")) flag++;
if (rpm_check(release:"SLES11", sp:3, cpu:"s390x", reference:"openssh-askpass-gnome-6.2p2-0.13.1")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get());
  else security_warning(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");

#
# (C) Tenable Network Security, Inc.
#

# The descriptive text and package checks in this plugin were
# extracted from ZTE advisory NS-SA-2019-0146. The text
# itself is copyright (C) ZTE, Inc.

include("compat.inc");

if (description)
{
  script_id(127415);
  script_version("1.3");
  script_cvs_date("Date: 2019/09/24 11:01:33");

  script_cve_id(
    "CVE-2006-0225",
    "CVE-2006-4924",
    "CVE-2006-5051",
    "CVE-2006-5794",
    "CVE-2007-3102",
    "CVE-2010-4755",
    "CVE-2010-5107",
    "CVE-2014-2532",
    "CVE-2014-2653",
    "CVE-2014-9278",
    "CVE-2015-5600",
    "CVE-2015-8325",
    "CVE-2016-0777",
    "CVE-2016-1908",
    "CVE-2016-6210"
  );

  script_name(english:"NewStart CGSL MAIN 4.05 : openssh-latest Multiple Vulnerabilities (NS-SA-2019-0146)");

  script_set_attribute(attribute:"synopsis", value:
"The remote machine is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The remote NewStart CGSL host, running version MAIN 4.05, has openssh-latest packages installed that are affected by
multiple vulnerabilities:

  - scp in OpenSSH 4.2p1 allows attackers to execute
    arbitrary commands via filenames that contain shell
    metacharacters or spaces, which are expanded twice.
    (CVE-2006-0225)

  - sshd in OpenSSH before 4.4, when using the version 1 SSH
    protocol, allows remote attackers to cause a denial of
    service (CPU consumption) via an SSH packet that
    contains duplicate blocks, which is not properly handled
    by the CRC compensation attack detector. (CVE-2006-4924)

  - Signal handler race condition in OpenSSH before 4.4
    allows remote attackers to cause a denial of service
    (crash), and possibly execute arbitrary code if GSSAPI
    authentication is enabled, via unspecified vectors that
    lead to a double-free. (CVE-2006-5051)

  - Unspecified vulnerability in the sshd Privilege
    Separation Monitor in OpenSSH before 4.5 causes weaker
    verification that authentication has been successful,
    which might allow attackers to bypass authentication.
    NOTE: as of 20061108, it is believed that this issue is
    only exploitable by leveraging vulnerabilities in the
    unprivileged process, which are not known to exist.
    (CVE-2006-5794)

  - Unspecified vulnerability in the
    linux_audit_record_event function in OpenSSH 4.3p2, as
    used on Fedora Core 6 and possibly other systems, allows
    remote attackers to write arbitrary characters to an
    audit log via a crafted username. NOTE: some of these
    details are obtained from third party information.
    (CVE-2007-3102)

  - The (1) remote_glob function in sftp-glob.c and the (2)
    process_put function in sftp.c in OpenSSH 5.8 and
    earlier, as used in FreeBSD 7.3 and 8.1, NetBSD 5.0.2,
    OpenBSD 4.7, and other products, allow remote
    authenticated users to cause a denial of service (CPU
    and memory consumption) via crafted glob expressions
    that do not match any pathnames, as demonstrated by glob
    expressions in SSH_FXP_STAT requests to an sftp daemon,
    a different vulnerability than CVE-2010-2632.
    (CVE-2010-4755)

  - The default configuration of OpenSSH through 6.1
    enforces a fixed time limit between establishing a TCP
    connection and completing a login, which makes it easier
    for remote attackers to cause a denial of service
    (connection-slot exhaustion) by periodically making many
    new TCP connections. (CVE-2010-5107)

  - It was found that OpenSSH did not properly handle
    certain AcceptEnv parameter values with wildcard
    characters. A remote attacker could use this flaw to
    bypass intended environment variable restrictions.
    (CVE-2014-2532)

  - It was discovered that OpenSSH clients did not correctly
    verify DNS SSHFP records. A malicious server could use
    this flaw to force a connecting client to skip the DNS
    SSHFP record check and require the user to perform
    manual host verification of the DNS SSHFP record.
    (CVE-2014-2653)

  - It was found that when OpenSSH was used in a Kerberos
    environment, remote authenticated users were allowed to
    log in as a different user if they were listed in the
    ~/.k5users file of that user, potentially bypassing
    intended authentication restrictions. (CVE-2014-9278)

  - It was discovered that the OpenSSH sshd daemon did not
    check the list of keyboard-interactive authentication
    methods for duplicates. A remote attacker could use this
    flaw to bypass the MaxAuthTries limit, making it easier
    to perform password guessing attacks. (CVE-2015-5600)

  - It was discovered that the OpenSSH sshd daemon fetched
    PAM environment settings before running the login
    program. In configurations with UseLogin=yes and the
    pam_env PAM module configured to read user environment
    settings, a local user could use this flaw to execute
    arbitrary code as root. (CVE-2015-8325)

  - An information leak flaw was found in the way the
    OpenSSH client roaming feature was implemented. A
    malicious server could potentially use this flaw to leak
    portions of memory (possibly including private SSH keys)
    of a successfully authenticated OpenSSH client.
    (CVE-2016-0777)

  - An access flaw was discovered in OpenSSH; the OpenSSH
    client did not correctly handle failures to generate
    authentication cookies for untrusted X11 forwarding. A
    malicious or compromised remote X application could
    possibly use this flaw to establish a trusted connection
    to the local X server, even if only untrusted X11
    forwarding was requested. (CVE-2016-1908)

  - A covert timing channel flaw was found in the way
    OpenSSH handled authentication of non-existent users. A
    remote unauthenticated attacker could possibly use this
    flaw to determine valid user names by measuring the
    timing of server responses. (CVE-2016-6210)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"http://security.gd-linux.com/notice/NS-SA-2019-0146");
  script_set_attribute(attribute:"solution", value:
"Upgrade the vulnerable CGSL openssh-latest packages. Note that updated packages may not be available yet. Please contact
ZTE for more information.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2006-5051");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_cwe_id(362, 399);

  script_set_attribute(attribute:"vuln_publication_date", value:"2006/01/25");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/07/17");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/08/12");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"NewStart CGSL Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/ZTE-CGSL/release", "Host/ZTE-CGSL/rpm-list", "Host/cpu");

  exit(0);
}

include("audit.inc");
include("global_settings.inc");
include("rpm.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);

release = get_kb_item("Host/ZTE-CGSL/release");
if (isnull(release) || release !~ "^CGSL (MAIN|CORE)") audit(AUDIT_OS_NOT, "NewStart Carrier Grade Server Linux");

if (release !~ "CGSL MAIN 4.05")
  audit(AUDIT_OS_NOT, 'NewStart CGSL MAIN 4.05');

if (!get_kb_item("Host/ZTE-CGSL/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "NewStart Carrier Grade Server Linux", cpu);

flag = 0;

pkgs = {
  "CGSL MAIN 4.05": [
    "openssh-latest-7.9p1-1.el6.cgsl7741",
    "openssh-latest-askpass-7.9p1-1.el6.cgsl7741",
    "openssh-latest-cavs-7.9p1-1.el6.cgsl7741",
    "openssh-latest-clients-7.9p1-1.el6.cgsl7741",
    "openssh-latest-debuginfo-7.9p1-1.el6.cgsl7741",
    "openssh-latest-keycat-7.9p1-1.el6.cgsl7741",
    "openssh-latest-ldap-7.9p1-1.el6.cgsl7741",
    "openssh-latest-server-7.9p1-1.el6.cgsl7741"
  ]
};
pkg_list = pkgs[release];

foreach (pkg in pkg_list)
  if (rpm_check(release:"ZTE " + release, reference:pkg)) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "openssh-latest");
}

#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-2164-1. The text 
# itself is copyright (C) Canonical, Inc. See 
# <http://www.ubuntu.com/usn/>. Ubuntu(R) is a registered 
# trademark of Canonical, Inc.
#

include("compat.inc");

if (description)
{
  script_id(73401);
  script_version("1.7");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/12");

  script_cve_id("CVE-2014-2653");
  script_bugtraq_id(66459);
  script_xref(name:"USN", value:"2164-1");

  script_name(english:"Ubuntu 12.04 LTS / 12.10 / 13.10 : openssh vulnerability (USN-2164-1)");
  script_summary(english:"Checks dpkg output for updated package.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Ubuntu host is missing a security-related patch."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Matthew Vernon discovered that OpenSSH did not correctly check SSHFP
DNS records if a server presented an unacceptable host certificate. A
malicious server could use this issue to disable SSHFP checking.

Note that Tenable Network Security has extracted the preceding
description block directly from the Ubuntu security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://usn.ubuntu.com/2164-1/"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected openssh-client package."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:openssh-client");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:12.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:12.10");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:13.10");

  script_set_attribute(attribute:"vuln_publication_date", value:"2014/03/27");
  script_set_attribute(attribute:"patch_publication_date", value:"2014/04/07");
  script_set_attribute(attribute:"plugin_publication_date", value:"2014/04/08");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2014-2020 Canonical, Inc. / NASL script (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Ubuntu Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/cpu", "Host/Ubuntu", "Host/Ubuntu/release", "Host/Debian/dpkg-l");

  exit(0);
}


include("audit.inc");
include("ubuntu.inc");
include("misc_func.inc");

if ( ! get_kb_item("Host/local_checks_enabled") ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/Ubuntu/release");
if ( isnull(release) ) audit(AUDIT_OS_NOT, "Ubuntu");
release = chomp(release);
if (! preg(pattern:"^(12\.04|12\.10|13\.10)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 12.04 / 12.10 / 13.10", "Ubuntu " + release);
if ( ! get_kb_item("Host/Debian/dpkg-l") ) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Ubuntu", cpu);

flag = 0;

if (ubuntu_check(osver:"12.04", pkgname:"openssh-client", pkgver:"1:5.9p1-5ubuntu1.3")) flag++;
if (ubuntu_check(osver:"12.10", pkgname:"openssh-client", pkgver:"1:6.0p1-3ubuntu1.2")) flag++;
if (ubuntu_check(osver:"13.10", pkgname:"openssh-client", pkgver:"1:6.2p2-6ubuntu0.3")) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    extra      : ubuntu_report_get()
  );
  exit(0);
}
else
{
  tested = ubuntu_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "openssh-client");
}

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Amazon Linux AMI Security Advisory ALAS-2014-369.
#

include("compat.inc");

if (description)
{
  script_id(78312);
  script_version("1.6");
  script_cvs_date("Date: 2018/04/18 15:09:35");

  script_cve_id("CVE-2014-2532", "CVE-2014-2653");
  script_xref(name:"ALAS", value:"2014-369");

  script_name(english:"Amazon Linux AMI : openssh (ALAS-2014-369)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Amazon Linux AMI host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"sshd in OpenSSH before 6.6 does not properly support wildcards on
AcceptEnv lines in sshd_config, which allows remote attackers to
bypass intended environment restrictions by using a substring located
before a wildcard character.

The verify_host_key function in sshconnect.c in the client in OpenSSH
6.6 and earlier allows remote servers to trigger the skipping of SSHFP
DNS RR checking by presenting an unacceptable HostCertificate."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://alas.aws.amazon.com/ALAS-2014-369.html"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Run 'yum update openssh' to update your system."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:N");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:openssh");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:openssh-clients");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:openssh-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:openssh-keycat");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:openssh-ldap");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:openssh-server");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:pam_ssh_agent_auth");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:amazon:linux");

  script_set_attribute(attribute:"patch_publication_date", value:"2014/07/09");
  script_set_attribute(attribute:"plugin_publication_date", value:"2014/10/12");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2014-2018 Tenable Network Security, Inc.");
  script_family(english:"Amazon Linux Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/AmazonLinux/release", "Host/AmazonLinux/rpm-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("rpm.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);

release = get_kb_item("Host/AmazonLinux/release");
if (isnull(release) || !strlen(release)) audit(AUDIT_OS_NOT, "Amazon Linux");
os_ver = pregmatch(pattern: "^AL(A|\d)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Amazon Linux");
os_ver = os_ver[1];
if (os_ver != "A")
{
  if (os_ver == 'A') os_ver = 'AMI';
  audit(AUDIT_OS_NOT, "Amazon Linux AMI", "Amazon Linux " + os_ver);
}

if (!get_kb_item("Host/AmazonLinux/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;
if (rpm_check(release:"ALA", reference:"openssh-6.2p2-8.41.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"openssh-clients-6.2p2-8.41.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"openssh-debuginfo-6.2p2-8.41.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"openssh-keycat-6.2p2-8.41.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"openssh-ldap-6.2p2-8.41.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"openssh-server-6.2p2-8.41.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"pam_ssh_agent_auth-0.9.3-5.8.41.amzn1")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get());
  else security_warning(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "openssh / openssh-clients / openssh-debuginfo / openssh-keycat / etc");
}

#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(106497);
  script_version("1.6");
  script_cvs_date("Date: 2018/07/24 18:56:11");

  script_cve_id(
    "CVE-2014-2653",
    "CVE-2015-1283",
    "CVE-2015-1416",
    "CVE-2015-1418",
    "CVE-2015-5600",
    "CVE-2015-5675",
    "CVE-2015-6563",
    "CVE-2015-6564",
    "CVE-2015-6565",
    "CVE-2015-7691",
    "CVE-2015-7692",
    "CVE-2015-7701",
    "CVE-2015-7702",
    "CVE-2015-7703",
    "CVE-2015-7704",
    "CVE-2015-7705",
    "CVE-2015-7803",
    "CVE-2015-7804",
    "CVE-2015-7848",
    "CVE-2015-7849",
    "CVE-2015-7850",
    "CVE-2015-7851",
    "CVE-2015-7852",
    "CVE-2015-7853",
    "CVE-2015-7854",
    "CVE-2015-7855",
    "CVE-2015-7871"
  );
  script_bugtraq_id(
    66459,
    75990,
    76116,
    76236,
    76317,
    76485,
    76497,
    77273,
    77274,
    77275,
    77276,
    77277,
    77278,
    77279,
    77280,
    77281,
    77282,
    77283,
    77284,
    77285,
    77286,
    77287,
    77288
  );
  script_xref(name:"FreeBSD", value:"SA-15:14.bsdpatch");
  script_xref(name:"FreeBSD", value:"SA-15:16.openssh");
  script_xref(name:"FreeBSD", value:"SA-15:18.bsdpatch");
  script_xref(name:"FreeBSD", value:"SA-15:20.expat");
  script_xref(name:"FreeBSD", value:"SA-15:21.amd64");
  script_xref(name:"FreeBSD", value:"SA-15:22.openssh");
  script_xref(name:"FreeBSD", value:"SA-15:25.ntp");
  script_xref(name:"TRA", value:"TRA-2015-04");

  script_name(english:"pfSense < 2.2.5 Multiple Vulnerabilities (SA-15_08)");
  script_summary(english:"Checks the version of pfSense.");

  script_set_attribute(attribute:"synopsis", value:
"The remote firewall host is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"According to its self-reported version number, the remote pfSense
install is prior to 2.2.5. It is, therefore, affected by multiple
vulnerabilities as stated in the referenced vendor advisories.");
  script_set_attribute(attribute:"see_also", value:"https://doc.pfsense.org/index.php/2.2.5_New_Features_and_Changes");
  # https://www.pfsense.org/security/advisories/pfSense-SA-15_08.webgui.asc
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?ec9ba339");
  script_set_attribute(attribute:"solution", value:
"Upgrade to pfSense version 2.2.5 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2015/09/04");
  script_set_attribute(attribute:"patch_publication_date", value:"2015/09/08");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/01/31");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:pfsense:pfsense");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:bsdperimeter:pfsense");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Firewalls");

  script_copyright(english:"This script is Copyright (C) 2018 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("pfsense_detect.nbin");
  script_require_keys("Host/pfSense");

  exit(0);
}

include("vcf.inc");
include("vcf_extras.inc");

if (!get_kb_item("Host/pfSense")) audit(AUDIT_HOST_NOT, "pfSense");

app_info = vcf::pfsense::get_app_info();
constraints = [
  { "fixed_version" : "2.2.5" }
];

vcf::pfsense::check_version_and_report(
  app_info:app_info,
  constraints:constraints,
  severity:SECURITY_HOLE,
  flags:{xss:TRUE}
);

#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(78655);
  script_version("1.9");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/04/27");

  script_cve_id("CVE-2014-2653");
  script_bugtraq_id(66459);

  script_name(english:"OpenSSH SSHFP Record Verification Weakness");
  script_summary(english:"Checks the version reported in the SSH banner.");

  script_set_attribute(attribute:"synopsis", value:
"A secure shell client on the remote host could be used to bypass host
verification methods.");
  script_set_attribute(attribute:"description", value:
"According to its banner, the version of OpenSSH running on the remote
host is 6.1 through 6.6.

It is, therefore, affected by a host verification bypass vulnerability
related to SSHFP and certificates that could allow a malicious SSH
server to cause the supplied client to inappropriately trust the
server.");
  # Vendor patch and note
  script_set_attribute(attribute:"see_also", value:"http://thread.gmane.org/gmane.network.openssh.devel/20679");
  # SSHFP RFC "Using DNS to Securely Publish Secure Shell (SSH) Key Fingerprints"
  script_set_attribute(attribute:"see_also", value:"https://tools.ietf.org/html/rfc4255");
  # CVE assignment
  script_set_attribute(attribute:"see_also", value:"https://seclists.org/oss-sec/2014/q1/663");
  script_set_attribute(attribute:"solution", value:"Update to OpenSSH version 6.7 or later or apply the vendor patch.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2014-2653");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2014/03/24");
  script_set_attribute(attribute:"patch_publication_date", value:"2014/10/21");
  script_set_attribute(attribute:"plugin_publication_date", value:"2014/10/23");

  script_set_attribute(attribute:"potential_vulnerability", value:"true");
  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:openbsd:openssh");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Misc.");

  script_copyright(english:"This script is Copyright (C) 2014-2020 Tenable Network Security, Inc.");

  script_dependencies("ssh_detect.nasl");
  script_require_ports("Services/ssh");
  script_require_keys("Settings/ParanoidReport");

  exit(0);
}

include("audit.inc");
include("backport.inc");
include("global_settings.inc");
include("misc_func.inc");

# Ensure the port is open.
port = get_service(svc:"ssh", exit_on_fail:TRUE);

# Get banner for service.
banner = get_kb_item_or_exit("SSH/banner/"+port);

bp_banner = tolower(get_backport_banner(banner:banner));
if ("openssh" >!< bp_banner) audit(AUDIT_NOT_LISTEN, "OpenSSH", port);

# Check the version in the backported banner.
match = eregmatch(string:bp_banner, pattern:"openssh[-_]([0-9][-._0-9a-z]+)");
if (empty_or_null(match)) audit(AUDIT_SERVICE_VER_FAIL, "OpenSSH", port);
version = match[1];

if (report_paranoia < 2) audit(AUDIT_PARANOID);

# Affected : 6.1 through 6.6
if (version =~ "^6\.[1-6]($|[^0-9])")
{
  if (report_verbosity > 0)
  {
    report =
      '\n  Version source    : ' + banner +
      '\n  Installed version : ' + version +
      '\n  Fixed version     : 6.7' +
      '\n';
    security_warning(port:port, extra:report);
  }
  else security_warning(port);
}
else audit(AUDIT_LISTEN_NOT_VULN, "OpenSSH", port, version);

#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Debian Security Advisory DSA-2894. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(73350);
  script_version("1.11");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/12");

  script_cve_id("CVE-2014-2532", "CVE-2014-2653");
  script_bugtraq_id(66355, 66459);
  script_xref(name:"DSA", value:"2894");

  script_name(english:"Debian DSA-2894-1 : openssh - security update");
  script_summary(english:"Checks dpkg output for the updated package");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Debian host is missing a security-related update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Two vulnerabilities were discovered in OpenSSH, an implementation of
the SSH protocol suite. The Common Vulnerabilities and Exposures
project identifies the following problems :

  - CVE-2014-2532
    Jann Horn discovered that OpenSSH incorrectly handled
    wildcards in AcceptEnv lines. A remote attacker could
    use this issue to trick OpenSSH into accepting any
    environment variable that contains the characters before
    the wildcard character.

  - CVE-2014-2653
    Matthew Vernon reported that if a SSH server offers a
    HostCertificate that the ssh client doesn't accept, then
    the client doesn't check the DNS for SSHFP records. As a
    consequence a malicious server can disable
    SSHFP-checking by presenting a certificate.

  Note that a host verification prompt is still displayed before
  connecting."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=742513"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2014-2532"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2014-2653"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/squeeze/openssh"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/wheezy/openssh"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.debian.org/security/2014/dsa-2894"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Upgrade the openssh packages.

For the oldstable distribution (squeeze), these problems have been
fixed in version 1:5.5p1-6+squeeze5.

For the stable distribution (wheezy), these problems have been fixed
in version 1:6.0p1-4+deb7u1."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:openssh");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:6.0");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:7.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2014/04/05");
  script_set_attribute(attribute:"plugin_publication_date", value:"2014/04/07");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2014-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Debian Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l");

  exit(0);
}


include("audit.inc");
include("debian_package.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Debian/release")) audit(AUDIT_OS_NOT, "Debian");
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;
if (deb_check(release:"6.0", prefix:"openssh-client", reference:"1:5.5p1-6+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"openssh-client-udeb", reference:"1:5.5p1-6+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"openssh-server", reference:"1:5.5p1-6+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"openssh-server-udeb", reference:"1:5.5p1-6+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"ssh", reference:"1:5.5p1-6+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"ssh-askpass-gnome", reference:"1:5.5p1-6+squeeze5")) flag++;
if (deb_check(release:"6.0", prefix:"ssh-krb5", reference:"1:5.5p1-6+squeeze5")) flag++;
if (deb_check(release:"7.0", prefix:"openssh-client", reference:"1:6.0p1-4+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"openssh-client-udeb", reference:"1:6.0p1-4+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"openssh-server", reference:"1:6.0p1-4+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"openssh-server-udeb", reference:"1:6.0p1-4+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"ssh", reference:"1:6.0p1-4+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"ssh-askpass-gnome", reference:"1:6.0p1-4+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"ssh-krb5", reference:"1:6.0p1-4+deb7u1")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:deb_report_get());
  else security_warning(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");