RHEL 6 / 7 : qemu-kvm-rhev (RHSA-2015:1004)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2015:1004. The text
# itself is copyright (C) Red Hat, Inc.
##

include('compat.inc');

if (description)
{
  script_id(210173);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/11/05");

  script_cve_id("CVE-2015-3456");
  script_xref(name:"RHSA", value:"2015:1004");

  script_name(english:"RHEL 6 / 7 : qemu-kvm-rhev (RHSA-2015:1004)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Red Hat host is missing a security update for qemu-kvm-rhev.");
  script_set_attribute(attribute:"description", value:
"The remote Redhat Enterprise Linux 6 / 7 host has packages installed that are affected by a vulnerability as referenced
in the RHSA-2015:1004 advisory.

    KVM (Kernel-based Virtual Machine) is a full virtualization solution for
    Linux on AMD64 and Intel 64 systems. The qemu-kvm-rhev package provides the
    user-space component for running virtual machines using KVM in environments
    managed by Red Hat Enterprise Linux OpenStack Platform.

    An out-of-bounds memory access flaw was found in the way QEMU's virtual
    Floppy Disk Controller (FDC) handled FIFO buffer access while processing
    certain FDC commands. A privileged guest user could use this flaw to crash
    the guest or, potentially, execute arbitrary code on the host with the
    privileges of the host's QEMU process corresponding to the guest.
    (CVE-2015-3456)

    Red Hat would like to thank Jason Geffner of CrowdStrike for reporting
    this issue.

    All qemu-kvm-rhev users are advised to upgrade to these updated packages,
    which contain a backported patch to correct this issue. After installing
    this update, shut down all running virtual machines. Once all virtual
    machines have shut down, start them again 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.");
  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=1218611");
  # https://access.redhat.com/security/data/csaf/v2/advisories/2015/rhsa-2015_1004.json
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?413c788a");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2015:1004");
  script_set_attribute(attribute:"solution", value:
"Update the RHEL qemu-kvm-rhev package based on the guidance in RHSA-2015:1004.");
  script_set_cvss_base_vector("CVSS2#AV:A/AC:L/Au:S/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2015-3456");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploit_framework_core", value:"true");
  script_cwe_id(119);
  script_set_attribute(attribute:"vendor_severity", value:"Important");

  script_set_attribute(attribute:"vuln_publication_date", value:"2015/05/13");
  script_set_attribute(attribute:"patch_publication_date", value:"2015/05/13");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/11/04");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:6");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:libcacard-devel-rhev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:libcacard-rhev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:libcacard-tools-rhev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:qemu-img-rhev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:qemu-kvm-common-rhev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:qemu-kvm-rhev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:qemu-kvm-rhev-tools");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:qemu-kvm-tools-rhev");
  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) 2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl", "redhat_repos.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: ['6','7'])) audit(AUDIT_OS_NOT, 'Red Hat 6.x / 7.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 = [
  {
    'repo_relative_urls': [
      'content/dist/rhel/server/6/6Server/x86_64/openstack/4.0/debug',
      'content/dist/rhel/server/6/6Server/x86_64/openstack/4.0/os',
      'content/dist/rhel/server/6/6Server/x86_64/openstack/4.0/source/SRPMS',
      'content/dist/rhel/server/6/6Server/x86_64/openstack/5.0/debug',
      'content/dist/rhel/server/6/6Server/x86_64/openstack/5.0/os',
      'content/dist/rhel/server/6/6Server/x86_64/openstack/5.0/source/SRPMS'
    ],
    'pkgs': [
      {'reference':'qemu-img-rhev-0.12.1.2-2.448.el6_6.3', 'cpu':'x86_64', 'release':'6', 'el_string':'el6_6', 'rpm_spec_vers_cmp':TRUE, 'epoch':'2', 'exists_check':'openstack-'},
      {'reference':'qemu-kvm-rhev-0.12.1.2-2.448.el6_6.3', 'cpu':'x86_64', 'release':'6', 'el_string':'el6_6', 'rpm_spec_vers_cmp':TRUE, 'epoch':'2', 'exists_check':'openstack-'},
      {'reference':'qemu-kvm-rhev-tools-0.12.1.2-2.448.el6_6.3', 'cpu':'x86_64', 'release':'6', 'el_string':'el6_6', 'rpm_spec_vers_cmp':TRUE, 'epoch':'2', 'exists_check':'openstack-'}
    ]
  },
  {
    'repo_relative_urls': [
      'content/dist/rhel/server/7/7Server/x86_64/openstack/5.0/debug',
      'content/dist/rhel/server/7/7Server/x86_64/openstack/5.0/os',
      'content/dist/rhel/server/7/7Server/x86_64/openstack/5.0/source/SRPMS',
      'content/dist/rhel/server/7/7Server/x86_64/openstack/6.0/debug',
      'content/dist/rhel/server/7/7Server/x86_64/openstack/6.0/os',
      'content/dist/rhel/server/7/7Server/x86_64/openstack/6.0/source/SRPMS'
    ],
    'pkgs': [
      {'reference':'libcacard-devel-rhev-2.1.2-23.el7_1.3', 'cpu':'x86_64', 'release':'7', 'el_string':'el7_1', 'rpm_spec_vers_cmp':TRUE, 'epoch':'10', 'exists_check':'openstack-'},
      {'reference':'libcacard-rhev-2.1.2-23.el7_1.3', 'cpu':'x86_64', 'release':'7', 'el_string':'el7_1', 'rpm_spec_vers_cmp':TRUE, 'epoch':'10', 'exists_check':'openstack-'},
      {'reference':'libcacard-tools-rhev-2.1.2-23.el7_1.3', 'cpu':'x86_64', 'release':'7', 'el_string':'el7_1', 'rpm_spec_vers_cmp':TRUE, 'epoch':'10', 'exists_check':'openstack-'},
      {'reference':'qemu-img-rhev-2.1.2-23.el7_1.3', 'cpu':'x86_64', 'release':'7', 'el_string':'el7_1', 'rpm_spec_vers_cmp':TRUE, 'epoch':'10', 'exists_check':'openstack-'},
      {'reference':'qemu-kvm-common-rhev-2.1.2-23.el7_1.3', 'cpu':'x86_64', 'release':'7', 'el_string':'el7_1', 'rpm_spec_vers_cmp':TRUE, 'epoch':'10', 'exists_check':'openstack-'},
      {'reference':'qemu-kvm-rhev-2.1.2-23.el7_1.3', 'cpu':'x86_64', 'release':'7', 'el_string':'el7_1', 'rpm_spec_vers_cmp':TRUE, 'epoch':'10', 'exists_check':'openstack-'},
      {'reference':'qemu-kvm-tools-rhev-2.1.2-23.el7_1.3', 'cpu':'x86_64', 'release':'7', 'el_string':'el7_1', 'rpm_spec_vers_cmp':TRUE, 'epoch':'10', 'exists_check':'openstack-'}
    ]
  }
];

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_HOLE,
      extra      : extra
  );
  exit(0);
}
else
{
  var tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'libcacard-devel-rhev / libcacard-rhev / libcacard-tools-rhev / etc');
}