Vulnerabilities > CVE-2014-2532 - Permissions, Privileges, and Access Controls vulnerability in multiple products

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Slackware Security Advisory 2014-086-06. The text 
# itself is copyright (C) Slackware Linux, Inc.
#

include("compat.inc");

if (description)
{
  script_id(73252);
  script_version("$Revision: 1.6 $");
  script_cvs_date("$Date: 2016/12/09 20:54:58 $");

  script_cve_id("CVE-2014-2532");
  script_bugtraq_id(66355);
  script_xref(name:"SSA", value:"2014-086-06");

  script_name(english:"Slackware 13.0 / 13.1 / 13.37 / 14.0 / 14.1 / current : openssh (SSA:2014-086-06)");
  script_summary(english:"Checks for updated package in /var/log/packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Slackware host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"New openssh packages are available for Slackware 13.0, 13.1, 13.37,
14.0, 14.1, and -current to fix a security issue."
  );
  # http://www.slackware.com/security/viewer.php?l=slackware-security&y=2014&m=slackware-security.523534
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?ca896db4"
  );
  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:ND/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_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:slackware:slackware_linux:openssh");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:slackware:slackware_linux");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:slackware:slackware_linux:13.0");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:slackware:slackware_linux:13.1");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:slackware:slackware_linux:13.37");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:slackware:slackware_linux:14.0");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:slackware:slackware_linux:14.1");

  script_set_attribute(attribute:"patch_publication_date", value:"2014/03/28");
  script_set_attribute(attribute:"plugin_publication_date", value:"2014/03/31");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2014-2016 Tenable Network Security, Inc.");
  script_family(english:"Slackware Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Slackware/release", "Host/Slackware/packages");

  exit(0);
}


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


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Slackware/release")) audit(AUDIT_OS_NOT, "Slackware");
if (!get_kb_item("Host/Slackware/packages")) 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, "Slackware", cpu);


flag = 0;
if (slackware_check(osver:"13.0", pkgname:"openssh", pkgver:"5.9p1", pkgarch:"i486", pkgnum:"1_slack13.0")) flag++;
if (slackware_check(osver:"13.0", arch:"x86_64", pkgname:"openssh", pkgver:"5.9p1", pkgarch:"x86_64", pkgnum:"1_slack13.0")) flag++;

if (slackware_check(osver:"13.1", pkgname:"openssh", pkgver:"5.9p1", pkgarch:"i486", pkgnum:"1_slack13.1")) flag++;
if (slackware_check(osver:"13.1", arch:"x86_64", pkgname:"openssh", pkgver:"5.9p1", pkgarch:"x86_64", pkgnum:"1_slack13.1")) flag++;

if (slackware_check(osver:"13.37", pkgname:"openssh", pkgver:"5.9p1", pkgarch:"i486", pkgnum:"3_slack13.37")) flag++;
if (slackware_check(osver:"13.37", arch:"x86_64", pkgname:"openssh", pkgver:"5.9p1", pkgarch:"x86_64", pkgnum:"3_slack13.37")) flag++;

if (slackware_check(osver:"14.0", pkgname:"openssh", pkgver:"6.6p1", pkgarch:"i486", pkgnum:"1_slack14.0")) flag++;
if (slackware_check(osver:"14.0", arch:"x86_64", pkgname:"openssh", pkgver:"6.6p1", pkgarch:"x86_64", pkgnum:"1_slack14.0")) flag++;

if (slackware_check(osver:"14.1", pkgname:"openssh", pkgver:"6.6p1", pkgarch:"i486", pkgnum:"1_slack14.1")) flag++;
if (slackware_check(osver:"14.1", arch:"x86_64", pkgname:"openssh", pkgver:"6.6p1", pkgarch:"x86_64", pkgnum:"1_slack14.1")) flag++;

if (slackware_check(osver:"current", pkgname:"openssh", pkgver:"6.6p1", pkgarch:"i486", pkgnum:"1")) flag++;
if (slackware_check(osver:"current", arch:"x86_64", pkgname:"openssh", pkgver:"6.6p1", pkgarch:"x86_64", pkgnum:"1")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:slackware_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.
#

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.
#

include("compat.inc");

if (description)
{
  script_id(73079);
  script_version("1.10");
  script_cvs_date("Date: 2018/11/15 20:50:23");

  script_cve_id("CVE-2014-1692", "CVE-2014-2532");
  script_bugtraq_id(65230, 66355);

  script_name(english:"OpenSSH < 6.6 Multiple Vulnerabilities");
  script_summary(english:"Checks OpenSSH banner version.");

  script_set_attribute(attribute:"synopsis", value:
"The SSH server on the remote host is affected by multiple
vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"According to its banner, the version of OpenSSH running on the remote
host is prior to 6.6. It is, therefore, affected by the following
vulnerabilities :

  - A flaw exists due to a failure to initialize certain
    data structures when makefile.inc is modified to enable
    the J-PAKE protocol. An unauthenticated, remote attacker
    can exploit this to corrupt memory, resulting in a
    denial of service condition and potentially the
    execution of arbitrary code. (CVE-2014-1692)

  - An error exists related to the 'AcceptEnv' configuration
    setting in sshd_config due to improper processing of
    wildcard characters. An unauthenticated, remote attacker
    can exploit this, via a specially crafted request, to
    bypass intended environment restrictions.
    (CVE-2014-2532)

Note that Nessus has not tested for these issues but has instead
relied only on the application's self-reported version number.");
  script_set_attribute(attribute:"see_also", value:"http://www.openssh.com/txt/release-6.6");
  script_set_attribute(attribute:"see_also", value:"https://lists.gt.net/openssh/dev/57663#57663");
  script_set_attribute(attribute:"solution", value:"Upgrade to OpenSSH version 6.6 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  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:"vuln_publication_date", value:"2014/03/15");
  script_set_attribute(attribute:"patch_publication_date", value:"2014/03/15");
  script_set_attribute(attribute:"plugin_publication_date", value:"2014/03/18");

  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) 2014-2018 Tenable Network Security, Inc.");

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

  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);
if (backported) audit(code:0, AUDIT_BACKPORT_SERVICE, port, "OpenSSH");

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

# Does not affect all configurations
if (report_paranoia < 2) audit(AUDIT_PARANOID);

# Affected : < 6.6
if (
  version =~ "^[0-5]\." ||
  version =~ "^6\.[0-5]($|[^0-9])"
)
{
  if (report_verbosity > 0)
  {
    report =
      '\n  Version source    : ' + banner +
      '\n  Installed version : ' + version +
      '\n  Fixed version     : 6.6\n';
    security_hole(port:port, extra:report);
  }
  else security_hole(port);
  exit(0);
}
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 Ubuntu Security Notice USN-2155-1. 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(73202);
  script_version("1.10");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/12");

  script_cve_id("CVE-2014-2532");
  script_bugtraq_id(66355);
  script_xref(name:"USN", value:"2155-1");

  script_name(english:"Ubuntu 10.04 LTS / 12.04 LTS / 12.10 / 13.10 : openssh vulnerability (USN-2155-1)");
  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:
"Jann Horn discovered that OpenSSH incorrectly handled wildcards in
AcceptEnv lines. A remote attacker could use this issue to possibly
bypass certain intended environment variable restrictions.

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/2155-1/"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected openssh-server 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:ND/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_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-server");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:10.04:-:lts");
  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:"2014/03/18");
  script_set_attribute(attribute:"patch_publication_date", value:"2014/03/25");
  script_set_attribute(attribute:"plugin_publication_date", value:"2014/03/26");
  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:"^(10\.04|12\.04|12\.10|13\.10)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 10.04 / 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:"10.04", pkgname:"openssh-server", pkgver:"1:5.3p1-3ubuntu7.1")) flag++;
if (ubuntu_check(osver:"12.04", pkgname:"openssh-server", pkgver:"1:5.9p1-5ubuntu1.2")) flag++;
if (ubuntu_check(osver:"12.10", pkgname:"openssh-server", pkgver:"1:6.0p1-3ubuntu1.1")) flag++;
if (ubuntu_check(osver:"13.10", pkgname:"openssh-server", pkgver:"1:6.2p2-6ubuntu0.2")) 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-server");
}

#
# (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");
}