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RHEL 5 / 6 : libxml2 (RHSA-2012:1512)

🗓️ 30 Nov 2012 00:00:00Reported by TenableType 
nessus
 nessus🔗 www.tenable.com👁 18 Views

The remote Redhat Enterprise Linux 5 / 6 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2012:1512 advisory - libxml2: Heap-buffer-underflow in xmlParseAttValueComplex (CVE-2012-5134)

Related
Refs
Code
ReporterTitlePublishedViews
Family
FreeBSD		chromium -- multiple vulnerabilities
26 Nov 201200:00
–freebsd
Tenable Nessus		Google Chrome < 23.0.1271.91 Multiple Vulnerabilities
29 Nov 201200:00
–nessus
Tenable Nessus		iTunes for Windows < 11.1.4 Multiple Vulnerabilities
30 Jan 201300:00
–nessus
Tenable Nessus		Amazon Linux AMI : libxml2 (ALAS-2012-143)
4 Sep 201300:00
–nessus
Tenable Nessus		Apple TV < 6.0 Multiple Vulnerabilities
1 Oct 201300:00
–nessus
Tenable Nessus		Apple iOS < 7 Multiple Vulnerabilities
19 Sep 201300:00
–nessus
Tenable Nessus		CentOS 5 / 6 : libxml2 (CESA-2012:1512)
30 Nov 201200:00
–nessus
Tenable Nessus		CentOS 6 : mingw32-libxml2 (CESA-2013:0217)
1 Feb 201300:00
–nessus
Tenable Nessus		Debian DSA-2580-1 : libxml2 - buffer overflow
3 Dec 201200:00
–nessus
Tenable Nessus		FreeBSD : chromium -- multiple vulnerabilities (4d64fc61-3878-11e2-a4eb-00262d5ed8ee)
28 Nov 201200:00
–nessus
Rows per page
#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Red Hat Security Advisory RHSA-2012:1512. The text 
# itself is copyright (C) Red Hat, Inc.
#

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(63105);
  script_version("1.27");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/11/04");

  script_cve_id("CVE-2012-5134");
  script_bugtraq_id(56684);
  script_xref(name:"RHSA", value:"2012:1512");

  script_name(english:"RHEL 5 / 6 : libxml2 (RHSA-2012:1512)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Red Hat host is missing a security update for libxml2.");
  script_set_attribute(attribute:"description", value:
"The remote Redhat Enterprise Linux 5 / 6 host has packages installed that are affected by a vulnerability as referenced
in the RHSA-2012:1512 advisory.

    The libxml2 library is a development toolbox providing the implementation
    of various XML standards.

    A heap-based buffer underflow flaw was found in the way libxml2 decoded
    certain entities. A remote attacker could provide a specially-crafted XML
    file that, when opened in an application linked against libxml2, would
    cause the application to crash or, potentially, execute arbitrary code with
    the privileges of the user running the application. (CVE-2012-5134)

    All users of libxml2 are advised to upgrade to these updated packages,
    which contain a backported patch to correct this issue. The desktop must be
    restarted (log out, then log back in) for this update to take effect.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  # https://access.redhat.com/security/data/csaf/v2/advisories/2012/rhsa-2012_1512.json
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?12c77401");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2012:1512");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/updates/classification/#important");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=880466");
  script_set_attribute(attribute:"solution", value:
"Update the RHEL libxml2 package based on the guidance in RHSA-2012:1512.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/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:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2012-5134");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_set_attribute(attribute:"vendor_severity", value:"Important");

  script_set_attribute(attribute:"vuln_publication_date", value:"2012/11/27");
  script_set_attribute(attribute:"patch_publication_date", value:"2012/11/29");
  script_set_attribute(attribute:"plugin_publication_date", value:"2012/11/30");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:libxml2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:libxml2-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:libxml2-python");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:libxml2-static");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:5");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:6");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Red Hat Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2012-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

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

  exit(0);
}


include('rpm.inc');
include('rhel.inc');

if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item('Host/RedHat/release');
if (isnull(os_release) || 'Red Hat' >!< os_release) audit(AUDIT_OS_NOT, 'Red Hat');
var os_ver = pregmatch(pattern: "Red Hat Enterprise Linux.*release ([0-9]+(\.[0-9]+)?)", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'Red Hat');
os_ver = os_ver[1];
if (!rhel_check_release_list(operator: 'ge', os_version: os_ver, rhel_versions: ['5','6'])) audit(AUDIT_OS_NOT, 'Red Hat 5.x / 6.x', 'Red Hat ' + os_ver);

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

var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 's390' >!< cpu && 'aarch64' >!< cpu && 'ppc' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Red Hat', cpu);

var constraints = [
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      'content/dist/rhel/workstation/5/5Client/i386/desktop/debug',
      'content/dist/rhel/workstation/5/5Client/i386/desktop/os',
      'content/dist/rhel/workstation/5/5Client/i386/desktop/source/SRPMS',
      'content/dist/rhel/workstation/5/5Client/i386/os',
      'content/dist/rhel/workstation/5/5Client/i386/source/SRPMS',
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      'content/dist/rhel/workstation/5/5Client/x86_64/desktop/debug',
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      'content/fastrack/rhel/workstation/5/x86_64/desktop/debug',
      'content/fastrack/rhel/workstation/5/x86_64/desktop/os',
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      'content/fastrack/rhel/workstation/5/x86_64/os',
      'content/fastrack/rhel/workstation/5/x86_64/source/SRPMS'
    ],
    'pkgs': [
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      {'reference':'libxml2-2.6.26-2.1.15.el5_8.6', 'cpu':'ppc64', 'release':'5', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'libxml2-2.6.26-2.1.15.el5_8.6', 'cpu':'s390', 'release':'5', 'rpm_spec_vers_cmp':TRUE},
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      {'reference':'libxml2-python-2.6.26-2.1.15.el5_8.6', 'cpu':'i386', 'release':'5', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'libxml2-python-2.6.26-2.1.15.el5_8.6', 'cpu':'ppc', 'release':'5', 'rpm_spec_vers_cmp':TRUE},
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    ]
  },
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      'content/fastrack/rhel/server/6/i386/loadbalancer/os',
      'content/fastrack/rhel/server/6/i386/loadbalancer/source/SRPMS',
      'content/fastrack/rhel/server/6/i386/optional/debug',
      'content/fastrack/rhel/server/6/i386/optional/os',
      'content/fastrack/rhel/server/6/i386/optional/source/SRPMS',
      'content/fastrack/rhel/server/6/i386/os',
      'content/fastrack/rhel/server/6/i386/resilientstorage/debug',
      'content/fastrack/rhel/server/6/i386/resilientstorage/os',
      'content/fastrack/rhel/server/6/i386/resilientstorage/source/SRPMS',
      'content/fastrack/rhel/server/6/i386/source/SRPMS',
      'content/fastrack/rhel/server/6/x86_64/debug',
      'content/fastrack/rhel/server/6/x86_64/highavailability/debug',
      'content/fastrack/rhel/server/6/x86_64/highavailability/os',
      'content/fastrack/rhel/server/6/x86_64/highavailability/source/SRPMS',
      'content/fastrack/rhel/server/6/x86_64/loadbalancer/debug',
      'content/fastrack/rhel/server/6/x86_64/loadbalancer/os',
      'content/fastrack/rhel/server/6/x86_64/loadbalancer/source/SRPMS',
      'content/fastrack/rhel/server/6/x86_64/optional/debug',
      'content/fastrack/rhel/server/6/x86_64/optional/os',
      'content/fastrack/rhel/server/6/x86_64/optional/source/SRPMS',
      'content/fastrack/rhel/server/6/x86_64/os',
      'content/fastrack/rhel/server/6/x86_64/resilientstorage/debug',
      'content/fastrack/rhel/server/6/x86_64/resilientstorage/os',
      'content/fastrack/rhel/server/6/x86_64/resilientstorage/source/SRPMS',
      'content/fastrack/rhel/server/6/x86_64/scalablefilesystem/debug',
      'content/fastrack/rhel/server/6/x86_64/scalablefilesystem/os',
      'content/fastrack/rhel/server/6/x86_64/scalablefilesystem/source/SRPMS',
      'content/fastrack/rhel/server/6/x86_64/source/SRPMS',
      'content/fastrack/rhel/system-z/6/s390x/debug',
      'content/fastrack/rhel/system-z/6/s390x/optional/debug',
      'content/fastrack/rhel/system-z/6/s390x/optional/os',
      'content/fastrack/rhel/system-z/6/s390x/optional/source/SRPMS',
      'content/fastrack/rhel/system-z/6/s390x/os',
      'content/fastrack/rhel/system-z/6/s390x/source/SRPMS',
      'content/fastrack/rhel/workstation/6/i386/debug',
      'content/fastrack/rhel/workstation/6/i386/optional/debug',
      'content/fastrack/rhel/workstation/6/i386/optional/os',
      'content/fastrack/rhel/workstation/6/i386/optional/source/SRPMS',
      'content/fastrack/rhel/workstation/6/i386/os',
      'content/fastrack/rhel/workstation/6/i386/source/SRPMS',
      'content/fastrack/rhel/workstation/6/x86_64/debug',
      'content/fastrack/rhel/workstation/6/x86_64/optional/debug',
      'content/fastrack/rhel/workstation/6/x86_64/optional/os',
      'content/fastrack/rhel/workstation/6/x86_64/optional/source/SRPMS',
      'content/fastrack/rhel/workstation/6/x86_64/os',
      'content/fastrack/rhel/workstation/6/x86_64/scalablefilesystem/debug',
      'content/fastrack/rhel/workstation/6/x86_64/scalablefilesystem/os',
      'content/fastrack/rhel/workstation/6/x86_64/scalablefilesystem/source/SRPMS',
      'content/fastrack/rhel/workstation/6/x86_64/source/SRPMS'
    ],
    'pkgs': [
      {'reference':'libxml2-2.7.6-8.el6_3.4', 'cpu':'i686', 'release':'6', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'libxml2-2.7.6-8.el6_3.4', 'cpu':'ppc', 'release':'6', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'libxml2-2.7.6-8.el6_3.4', 'cpu':'ppc64', 'release':'6', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'libxml2-2.7.6-8.el6_3.4', 'cpu':'s390', 'release':'6', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'libxml2-2.7.6-8.el6_3.4', 'cpu':'s390x', 'release':'6', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'libxml2-2.7.6-8.el6_3.4', 'cpu':'x86_64', 'release':'6', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'libxml2-devel-2.7.6-8.el6_3.4', 'cpu':'i686', 'release':'6', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'libxml2-devel-2.7.6-8.el6_3.4', 'cpu':'ppc', 'release':'6', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'libxml2-devel-2.7.6-8.el6_3.4', 'cpu':'ppc64', 'release':'6', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'libxml2-devel-2.7.6-8.el6_3.4', 'cpu':'s390', 'release':'6', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'libxml2-devel-2.7.6-8.el6_3.4', 'cpu':'s390x', 'release':'6', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'libxml2-devel-2.7.6-8.el6_3.4', 'cpu':'x86_64', 'release':'6', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'libxml2-python-2.7.6-8.el6_3.4', 'cpu':'i686', 'release':'6', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'libxml2-python-2.7.6-8.el6_3.4', 'cpu':'ppc64', 'release':'6', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'libxml2-python-2.7.6-8.el6_3.4', 'cpu':'s390x', 'release':'6', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'libxml2-python-2.7.6-8.el6_3.4', 'cpu':'x86_64', 'release':'6', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'libxml2-static-2.7.6-8.el6_3.4', 'cpu':'i686', 'release':'6', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'libxml2-static-2.7.6-8.el6_3.4', 'cpu':'ppc64', 'release':'6', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'libxml2-static-2.7.6-8.el6_3.4', 'cpu':'s390x', 'release':'6', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'libxml2-static-2.7.6-8.el6_3.4', 'cpu':'x86_64', 'release':'6', 'rpm_spec_vers_cmp':TRUE}
    ]
  }
];

var applicable_repo_urls = rhel_determine_applicable_repository_urls(constraints:constraints);
if(applicable_repo_urls == RHEL_REPOS_NO_OVERLAP_MESSAGE) exit(0, RHEL_REPO_NOT_ENABLED);

var flag = 0;
foreach var constraint_array ( constraints ) {
  var repo_relative_urls = NULL;
  if (!empty_or_null(constraint_array['repo_relative_urls'])) repo_relative_urls = constraint_array['repo_relative_urls'];
  foreach var pkg ( constraint_array['pkgs'] ) {
    var reference = NULL;
    var _release = NULL;
    var sp = NULL;
    var _cpu = NULL;
    var el_string = NULL;
    var rpm_spec_vers_cmp = NULL;
    var epoch = NULL;
    var allowmaj = NULL;
    var exists_check = NULL;
    var cves = NULL;
    if (!empty_or_null(pkg['reference'])) reference = pkg['reference'];
    if (!empty_or_null(pkg['release'])) _release = 'RHEL' + pkg['release'];
    if (!empty_or_null(pkg['sp'])) sp = pkg['sp'];
    if (!empty_or_null(pkg['cpu'])) _cpu = pkg['cpu'];
    if (!empty_or_null(pkg['el_string'])) el_string = pkg['el_string'];
    if (!empty_or_null(pkg['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = pkg['rpm_spec_vers_cmp'];
    if (!empty_or_null(pkg['epoch'])) epoch = pkg['epoch'];
    if (!empty_or_null(pkg['allowmaj'])) allowmaj = pkg['allowmaj'];
    if (!empty_or_null(pkg['exists_check'])) exists_check = pkg['exists_check'];
    if (!empty_or_null(pkg['cves'])) cves = pkg['cves'];
    if (reference &&
        _release &&
        rhel_decide_repo_relative_url_check(required_repo_url_list:repo_relative_urls) &&
        (applicable_repo_urls || (!exists_check || rpm_exists(release:_release, rpm:exists_check))) &&
        rpm_check(release:_release, sp:sp, cpu:_cpu, reference:reference, epoch:epoch, el_string:el_string, rpm_spec_vers_cmp:rpm_spec_vers_cmp, allowmaj:allowmaj, cves:cves)) flag++;
  }
}

if (flag)
{
  var extra = NULL;
  if (isnull(applicable_repo_urls) || !applicable_repo_urls) extra = rpm_report_get() + redhat_report_repo_caveat();
  else extra = rpm_report_get();
  security_report_v4(
      port       : 0,
      severity   : SECURITY_WARNING,
      extra      : extra
  );
  exit(0);
}
else
{
  var tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'libxml2 / libxml2-devel / libxml2-python / libxml2-static');
}

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04 Nov 2024 00:00Current
8.7High risk
Vulners AI Score8.7
CVSS 26.8
EPSS0.02065
red hat enterprise linuxlibxml2heap-buffer-underflow
18