RHEL 7 : qemu-kvm-rhev (RHSA-2016:1000)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2016:1000. The text
# itself is copyright (C) Red Hat, Inc.
##

include('compat.inc');

if (description)
{
  script_id(193824);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/04/15");

  script_cve_id("CVE-2016-3710");
  script_xref(name:"RHSA", value:"2016:1000");

  script_name(english:"RHEL 7 : qemu-kvm-rhev (RHSA-2016:1000)");

  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 7 host has packages installed that are affected by a vulnerability as referenced in
the RHSA-2016:1000 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 Virtualization Manager.

    Security Fix(es):

    * An out-of-bounds read/write access flaw was found in the way QEMU's VGA emulation with VESA BIOS
    Extensions (VBE) support performed read/write operations via I/O port methods. A privileged guest user
    could use this flaw to execute arbitrary code on the host with the privileges of the host's QEMU process.
    (CVE-2016-3710)

    Red Hat would like to thank Wei Xiao (360 Marvel Team) and Qinghao Tang (360 Marvel Team) for reporting
    this issue.

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://security.access.redhat.com/data/csaf/v2/advisories/2016/rhsa-2016_1000.json
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?2125ffb5");
  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=1331401");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2016:1000");
  script_set_attribute(attribute:"solution", value:
"Update the RHEL qemu-kvm-rhev package based on the guidance in RHSA-2016:1000.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/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-2016-3710");

  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:"2016/05/09");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/05/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/04/24");

  script_set_attribute(attribute:"plugin_type", value:"local");
  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-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) 2024-2025 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(operator: 'ge', os_version: os_ver, rhel_version: '7')) 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);

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/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-2.3.0-31.el7_2.13', 'cpu':'x86_64', 'release':'7', 'el_string':'el7_2', 'rpm_spec_vers_cmp':TRUE, 'epoch':'10', 'exists_check':'openstack-'},
      {'reference':'libcacard-rhev-2.3.0-31.el7_2.13', 'cpu':'x86_64', 'release':'7', 'el_string':'el7_2', 'rpm_spec_vers_cmp':TRUE, 'epoch':'10', 'exists_check':'openstack-'},
      {'reference':'libcacard-tools-rhev-2.3.0-31.el7_2.13', 'cpu':'x86_64', 'release':'7', 'el_string':'el7_2', 'rpm_spec_vers_cmp':TRUE, 'epoch':'10', 'exists_check':'openstack-'},
      {'reference':'qemu-img-rhev-2.3.0-31.el7_2.13', 'cpu':'x86_64', 'release':'7', 'el_string':'el7_2', 'rpm_spec_vers_cmp':TRUE, 'epoch':'10', 'exists_check':'openstack-'},
      {'reference':'qemu-kvm-common-rhev-2.3.0-31.el7_2.13', 'cpu':'x86_64', 'release':'7', 'el_string':'el7_2', 'rpm_spec_vers_cmp':TRUE, 'epoch':'10', 'exists_check':'openstack-'},
      {'reference':'qemu-kvm-rhev-2.3.0-31.el7_2.13', 'cpu':'x86_64', 'release':'7', 'el_string':'el7_2', 'rpm_spec_vers_cmp':TRUE, 'epoch':'10', 'exists_check':'openstack-'},
      {'reference':'qemu-kvm-tools-rhev-2.3.0-31.el7_2.13', 'cpu':'x86_64', 'release':'7', 'el_string':'el7_2', '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');
}