Vulnerabilities > CVE-2012-0814 - Credentials Management vulnerability in Openbsd Openssh

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

include('compat.inc');

if (description)
{
  script_id(44081);
  script_version("1.13");
  script_cvs_date("Date: 2018/11/15 20:50:23");

  script_cve_id("CVE-2010-4478", "CVE-2012-0814");
  script_bugtraq_id(45304, 51702);

  script_name(english:"OpenSSH < 5.7 Multiple Vulnerabilities");
  script_summary(english:"Checks the version reported in the SSH banner.");

  script_set_attribute(attribute:"synopsis", value:
"The remote SSH service may be affected by multiple vulnerabilities.");

  script_set_attribute(attribute:"description", value:
"According to its banner, the version of OpenSSH running on the remote
host is earlier than 5.7.  Versions before 5.7 may be affected by the 
following vulnerabilities :

  - A security bypass vulnerability because OpenSSH does not 
    properly validate the public parameters in the J-PAKE
    protocol.  This could allow an attacker to authenticate 
    without the shared secret.  Note that this issue is only
    exploitable when OpenSSH is built with J-PAKE support,
    which is currently experimental and disabled by default, 
    and that Nessus has not checked whether J-PAKE support
    is indeed enabled. (CVE-2010-4478)

  - The auth_parse_options function in auth-options.c in 
    sshd provides debug messages containing authorized_keys
    command options, which allows remote, authenticated 
    users to obtain potentially sensitive information by 
    reading these messages. (CVE-2012-0814)");

  script_set_attribute(attribute:"solution", value:"Upgrade to OpenSSH 5.7 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:"cvss_score_source", value:"CVE-2010-4478");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_set_attribute(attribute:"see_also", value:"http://seb.dbzteam.org/crypto/jpake-session-key-retrieval.pdf");
  script_set_attribute(attribute:"see_also", value:"http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/Attic/jpake.c#rev1.5");
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?2ac4f8d9");
  
  script_set_attribute(attribute:"vuln_publication_date", value:"2010/09/12");
  script_set_attribute(attribute:"patch_publication_date", value:"2010/09/20");
  script_set_attribute(attribute:"plugin_publication_date", value:"2011/10/04");

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

  script_category(ACT_GATHER_INFO);
  script_family(english:"Misc.");
  
  script_copyright(english:"This script is Copyright (C) 2011-2018 Tenable Network Security, Inc.");

  script_dependencies("ssh_detect.nasl");
  script_require_ports("Services/ssh", 22);
  script_require_keys("Settings/ParanoidReport");

  exit(0);
}

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) exit(0, "The SSH service on port "+port+" is not OpenSSH.");
if (backported) exit(1, "The banner from the OpenSSH server on port "+port+" indicates patches may have been backported.");

# Check the version in the banner.
match = eregmatch(string:bp_banner, pattern:'openssh[-_]([0-9][-._0-9a-z]+)');
if (isnull(match)) exit(1, 'Could not parse the version string from the banner on port '+port+'.');

version = match[1];
if (version =~ '^([0-4]\\.|5\\.[0-6](\\.|[^\\.0-9]|$))')
{
  if (report_verbosity > 0)
  {
    report =
      '\n  Version source    : ' + banner +
      '\n  Installed version : ' + version +
      '\n  Fixed version     : 5.7\n';
    security_hole(port:port, extra:report);
  }
  else security_hole(port);
  exit(0);
}
else exit(0, 'The OpenSSH server on port '+port+' is not affected as it\'s version '+version+'.');

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Gentoo Linux Security Advisory GLSA 201405-06.
#
# The advisory text is Copyright (C) 2001-2018 Gentoo Foundation, Inc.
# and licensed under the Creative Commons - Attribution / Share Alike 
# license. See http://creativecommons.org/licenses/by-sa/3.0/
#

include("compat.inc");

if (description)
{
  script_id(73958);
  script_version("1.12");
  script_cvs_date("Date: 2018/07/13 15:08:46");

  script_cve_id("CVE-2008-5161", "CVE-2010-4478", "CVE-2010-4755", "CVE-2010-5107", "CVE-2011-5000", "CVE-2012-0814", "CVE-2014-2532");
  script_bugtraq_id(32319, 45304, 51702, 54114, 58162, 66355);
  script_xref(name:"GLSA", value:"201405-06");

  script_name(english:"GLSA-201405-06 : OpenSSH: Multiple vulnerabilities");
  script_summary(english:"Checks for updated package(s) in /var/db/pkg");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Gentoo host is missing one or more security-related
patches."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"The remote host is affected by the vulnerability described in GLSA-201405-06
(OpenSSH: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in OpenSSH. Please review
      the CVE identifiers referenced below for details.
  
Impact :

    A remote attacker could execute arbitrary code, cause a Denial of
      Service condition, obtain sensitive information, or bypass environment
      restrictions.
  
Workaround :

    There is no known workaround at this time."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security.gentoo.org/glsa/201405-06"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"All OpenSSH users should upgrade to the latest version:
      # emerge --sync
      # emerge --ask --oneshot --verbose '>=net-misc/openssh-6.6_p1-r1'
    NOTE: One or more of the issues described in this advisory have been
      fixed in previous updates. They are included in this advisory for the
      sake of completeness. It is likely that your system is already no longer
      affected by them."
  );
  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_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_cwe_id(200);

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:gentoo:linux:openssh");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux");

  script_set_attribute(attribute:"patch_publication_date", value:"2014/05/11");
  script_set_attribute(attribute:"plugin_publication_date", value:"2014/05/12");
  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:"Gentoo Local Security Checks");

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

  exit(0);
}


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

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Gentoo/release")) audit(AUDIT_OS_NOT, "Gentoo");
if (!get_kb_item("Host/Gentoo/qpkg-list")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;

if (qpkg_check(package:"net-misc/openssh", unaffected:make_list("ge 6.6_p1-r1"), vulnerable:make_list("lt 6.6_p1-r1"))) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:qpkg_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = qpkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "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(64211);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/04");

  script_cve_id("CVE-2011-5000", "CVE-2012-0814");

  script_name(english:"SuSE 11.1 Security Update : openssh (SAT Patch Number 6672)");
  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 collective security update of openssh fixes multiple security
issues :

  - memory exhaustion in gssapi due to integer overflow.
    (bnc#756370, CVE-2011-5000)

  - forced command option information leak (bnc#744643,
    CVE-2012-0814) Additionally, the following bug has been
    fixed :

  - server-side delay upon user exiting a ssh session, due
    to DNS queries from libaudit. (bnc#752354)"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.novell.com/show_bug.cgi?id=709782"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.novell.com/show_bug.cgi?id=744643"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.novell.com/show_bug.cgi?id=752354"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.novell.com/show_bug.cgi?id=756370"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://support.novell.com/security/cve/CVE-2011-5000.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://support.novell.com/security/cve/CVE-2012-0814.html"
  );
  script_set_attribute(attribute:"solution", value:"Apply SAT patch number 6672.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:S/C:N/I:N/A:P");

  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:"cpe:/o:novell:suse_linux:11");

  script_set_attribute(attribute:"patch_publication_date", value:"2012/08/13");
  script_set_attribute(attribute:"plugin_publication_date", value:"2013/01/25");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2013-2020 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) != 1) audit(AUDIT_OS_NOT, "SuSE 11.1");


flag = 0;
if (rpm_check(release:"SLED11", sp:1, cpu:"i586", reference:"openssh-5.1p1-41.55.1")) flag++;
if (rpm_check(release:"SLED11", sp:1, cpu:"i586", reference:"openssh-askpass-5.1p1-41.55.1")) flag++;
if (rpm_check(release:"SLED11", sp:1, cpu:"x86_64", reference:"openssh-5.1p1-41.55.1")) flag++;
if (rpm_check(release:"SLED11", sp:1, cpu:"x86_64", reference:"openssh-askpass-5.1p1-41.55.1")) flag++;
if (rpm_check(release:"SLES11", sp:1, reference:"openssh-5.1p1-41.55.1")) flag++;
if (rpm_check(release:"SLES11", sp:1, reference:"openssh-askpass-5.1p1-41.55.1")) flag++;


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