RHEL 7 : qemu-kvm (Unpatched Vulnerability)

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

include('compat.inc');

if (description)
{
  script_id(198727);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/06/03");

  script_cve_id(
    "CVE-2015-5745",
    "CVE-2015-7549",
    "CVE-2015-8504",
    "CVE-2015-8558",
    "CVE-2015-8567",
    "CVE-2015-8568",
    "CVE-2015-8613",
    "CVE-2016-1922",
    "CVE-2016-2198",
    "CVE-2016-2392",
    "CVE-2016-2538",
    "CVE-2016-2858",
    "CVE-2016-4037",
    "CVE-2016-6834",
    "CVE-2016-6888",
    "CVE-2016-7116",
    "CVE-2016-7421",
    "CVE-2016-7423",
    "CVE-2016-7907",
    "CVE-2016-7908",
    "CVE-2016-7909",
    "CVE-2016-8576",
    "CVE-2016-8909",
    "CVE-2016-9102",
    "CVE-2016-9103",
    "CVE-2016-9104",
    "CVE-2016-9105",
    "CVE-2016-9106",
    "CVE-2016-9907",
    "CVE-2016-9911",
    "CVE-2016-9923",
    "CVE-2016-10155",
    "CVE-2017-5973",
    "CVE-2017-6414",
    "CVE-2017-9373",
    "CVE-2017-9374",
    "CVE-2017-9375",
    "CVE-2017-10806",
    "CVE-2017-18043",
    "CVE-2018-10839",
    "CVE-2018-12617",
    "CVE-2018-17958",
    "CVE-2018-17963",
    "CVE-2019-8934",
    "CVE-2019-13164",
    "CVE-2020-13765",
    "CVE-2020-15469",
    "CVE-2020-25084",
    "CVE-2020-25741",
    "CVE-2020-25743",
    "CVE-2020-27617",
    "CVE-2021-3416",
    "CVE-2021-20257"
  );
  script_xref(name:"IAVB", value:"2020-B-0063-S");

  script_name(english:"RHEL 7 : qemu-kvm (Unpatched Vulnerability)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Red Hat 7 host is affected by multiple vulnerabilities that will not be patched.");
  script_set_attribute(attribute:"description", value:
"The remote Redhat Enterprise Linux 7 host has one or more packages installed that are affected by multiple
vulnerabilities that have been acknowledged by the vendor but will not be patched.

  - QEMU: net: ignore packets with large size (CVE-2018-17963)

  - Buffer overflow in the send_control_msg function in hw/char/virtio-serial-bus.c in QEMU before 2.4.0
    allows guest users to cause a denial of service (QEMU process crash) via a crafted virtio control message.
    (CVE-2015-5745)

  - The MSI-X MMIO support in hw/pci/msix.c in QEMU (aka Quick Emulator) allows local guest OS privileged
    users to cause a denial of service (NULL pointer dereference and QEMU process crash) by leveraging failure
    to define the .write method. (CVE-2015-7549)

Note that Nessus has not tested for these issues but has instead relied on the package manager's report that the package
is installed.");
  script_set_attribute(attribute:"solution", value:
"The vendor has acknowledged the vulnerabilities but no solution has been provided. Refer to the vendor for remediation
guidance.");
  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:POC/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:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2018-17963");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"vendor_unpatched", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2015/08/06");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/06/03");

  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:qemu-guest-agent");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:qemu-kvm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:qemu-kvm-ma");
  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:virtio-win");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_set_attribute(attribute:"stig_severity", value:"II");
  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("global_settings/vendor_unpatched"))
exit(0, "Unpatched Vulnerabilities Detection not active.");

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 = [
  {
    'pkgs': [
      {'reference':'qemu-guest-agent', 'release':'7', 'rpm_spec_vers_cmp':TRUE, 'unpatched_pkg':'qemu-guest-agent', 'cves':['CVE-2015-5745', 'CVE-2018-12617']},
      {'reference':'qemu-kvm', 'release':'7', 'rpm_spec_vers_cmp':TRUE, 'unpatched_pkg':'qemu-kvm', 'cves':['CVE-2015-5745', 'CVE-2015-7549', 'CVE-2015-8504', 'CVE-2015-8558', 'CVE-2015-8567', 'CVE-2015-8568', 'CVE-2015-8613', 'CVE-2016-1922', 'CVE-2016-2198', 'CVE-2016-2392', 'CVE-2016-2538', 'CVE-2016-2858', 'CVE-2016-4037', 'CVE-2016-6834', 'CVE-2016-6888', 'CVE-2016-7116', 'CVE-2016-7421', 'CVE-2016-7423', 'CVE-2016-7907', 'CVE-2016-7908', 'CVE-2016-7909', 'CVE-2016-8576', 'CVE-2016-8909', 'CVE-2016-9102', 'CVE-2016-9103', 'CVE-2016-9104', 'CVE-2016-9105', 'CVE-2016-9106', 'CVE-2016-9907', 'CVE-2016-9911', 'CVE-2016-9923', 'CVE-2016-10155', 'CVE-2017-5973', 'CVE-2017-6414', 'CVE-2017-9373', 'CVE-2017-9374', 'CVE-2017-9375', 'CVE-2017-10806', 'CVE-2017-18043', 'CVE-2018-10839', 'CVE-2018-17958', 'CVE-2018-17963', 'CVE-2019-13164', 'CVE-2020-15469', 'CVE-2020-25084', 'CVE-2020-27617', 'CVE-2021-3416', 'CVE-2021-20257']},
      {'reference':'qemu-kvm-ma', 'release':'7', 'rpm_spec_vers_cmp':TRUE, 'unpatched_pkg':'qemu-kvm-ma', 'cves':['CVE-2019-8934', 'CVE-2019-13164', 'CVE-2020-15469', 'CVE-2020-25084', 'CVE-2020-27617']},
      {'reference':'qemu-kvm-rhev', 'release':'7', 'rpm_spec_vers_cmp':TRUE, 'unpatched_pkg':'qemu-kvm-rhev', 'cves':['CVE-2015-5745', 'CVE-2015-8558', 'CVE-2015-8613', 'CVE-2016-2198', 'CVE-2016-2392', 'CVE-2016-2538', 'CVE-2016-2858', 'CVE-2016-4037', 'CVE-2016-6834', 'CVE-2016-7116', 'CVE-2016-7421', 'CVE-2016-7423', 'CVE-2016-7907', 'CVE-2016-7908', 'CVE-2016-7909', 'CVE-2016-9102', 'CVE-2016-9103', 'CVE-2016-9104', 'CVE-2016-9105', 'CVE-2016-9106', 'CVE-2016-9923', 'CVE-2017-6414', 'CVE-2017-10806', 'CVE-2017-18043', 'CVE-2018-10839', 'CVE-2019-8934', 'CVE-2020-13765', 'CVE-2020-15469', 'CVE-2020-25084', 'CVE-2020-25741', 'CVE-2020-25743', 'CVE-2020-27617', 'CVE-2021-3416', 'CVE-2021-20257']},
      {'reference':'qemu-kvm-rhev', 'release':'7', 'rpm_spec_vers_cmp':TRUE, 'unpatched_pkg':'qemu-kvm-rhev', 'cves':['CVE-2015-7549', 'CVE-2015-8504', 'CVE-2016-10155', 'CVE-2017-9373']},
      {'reference':'virtio-win', 'release':'7', 'rpm_spec_vers_cmp':TRUE, 'unpatched_pkg':'virtio-win', 'cves':['CVE-2018-12617']}
    ]
  }
];


var flag = 0;
foreach var constraint_array ( constraints ) {
  var repo_relative_urls = NULL;
  var enterprise_linux_flag = rhel_repo_urls_has_content_dist_rhel(repo_urls:repo_relative_urls);
  foreach var pkg ( constraint_array['pkgs'] ) {
    var unpatched_pkg = NULL;
    var _release = NULL;
    var sp = NULL;
    var el_string = NULL;
    var rpm_spec_vers_cmp = NULL;
    var exists_check = NULL;
    var cves = NULL;
    if (!empty_or_null(pkg['unpatched_pkg'])) unpatched_pkg = pkg['unpatched_pkg'];
    if (!empty_or_null(pkg['release'])) _release = 'RHEL' + pkg['release'];
    if (!empty_or_null(pkg['sp'])) sp = pkg['sp'];
    if (!empty_or_null(pkg['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = pkg['rpm_spec_vers_cmp'];
    if (!empty_or_null(pkg['exists_check'])) exists_check = pkg['exists_check'];
    if (!empty_or_null(pkg['cves'])) cves = pkg['cves'];
    if (unpatched_pkg &&
        _release &&
        (!exists_check || rpm_exists(release:_release, rpm:exists_check)) &&
        unpatched_package_exists(release:_release, package:unpatched_pkg, cves: cves)) flag++;
  }
}

if (flag)
{
  var extra = NULL;
  security_report_v4(
      port       : 0,
      severity   : SECURITY_HOLE,
      extra      : unpatched_packages_report()
  );
  exit(0);
}
else
{
  var tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'qemu-guest-agent / qemu-kvm / qemu-kvm-ma / qemu-kvm-rhev / etc');
}