Oracle Linux 9 : qemu-kvm (ELSA-2024-2135)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Oracle Linux Security Advisory ELSA-2024-2135.
##

include('compat.inc');

if (description)
{
  script_id(195037);
  script_version("1.0");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/05/06");

  script_cve_id(
    "CVE-2023-3019",
    "CVE-2023-3255",
    "CVE-2023-5088",
    "CVE-2023-6683",
    "CVE-2023-42467"
  );

  script_name(english:"Oracle Linux 9 : qemu-kvm (ELSA-2024-2135)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Oracle Linux host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote Oracle Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the
ELSA-2024-2135 advisory.

  - A bug in QEMU could cause a guest I/O operation otherwise addressed to an arbitrary disk offset to be
    targeted to offset 0 instead (potentially overwriting the VM's boot code). This could be used, for
    example, by L2 guests with a virtual disk (vdiskL2) stored on a virtual disk of an L1 (vdiskL1) hypervisor
    to read and/or write data to LBA 0 of vdiskL1, potentially gaining control of L1 at its next reboot.
    (CVE-2023-5088)

  - A flaw was found in the QEMU built-in VNC server while processing ClientCutText messages. The
    qemu_clipboard_request() function can be reached before vnc_server_cut_text_caps() was called and had the
    chance to initialize the clipboard peer, leading to a NULL pointer dereference. This could allow a
    malicious authenticated VNC client to crash QEMU and trigger a denial of service. (CVE-2023-6683)

  - QEMU through 8.0.0 could trigger a division by zero in scsi_disk_reset in hw/scsi/scsi-disk.c because
    scsi_disk_emulate_mode_select does not prevent s->qdev.blocksize from being 256. This stops QEMU and the
    guest immediately. (CVE-2023-42467)

  - A DMA reentrancy issue leading to a use-after-free error was found in the e1000e NIC emulation code in
    QEMU. This issue could allow a privileged guest user to crash the QEMU process on the host, resulting in a
    denial of service. (CVE-2023-3019)

  - A flaw was found in the QEMU built-in VNC server while processing ClientCutText messages. A wrong exit
    condition may lead to an infinite loop when inflating an attacker controlled zlib buffer in the
    `inflate_buffer` function. This could allow a remote authenticated client who is able to send a clipboard
    to the VNC server to trigger a denial of service. (CVE-2023-3255)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://linux.oracle.com/errata/ELSA-2024-2135.html");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:H/Au:S/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:H/PR:L/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-2023-5088");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2023/07/24");
  script_set_attribute(attribute:"patch_publication_date", value:"2024/05/02");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/05/06");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:oracle:linux:9:4:appstream_base");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:oracle:linux:9::appstream");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:9");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:qemu-guest-agent");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:qemu-img");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:qemu-kvm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:qemu-kvm-audio-pa");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:qemu-kvm-block-blkio");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:qemu-kvm-block-curl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:qemu-kvm-block-rbd");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:qemu-kvm-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:qemu-kvm-core");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:qemu-kvm-device-display-virtio-gpu");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:qemu-kvm-device-display-virtio-gpu-pci");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:qemu-kvm-device-display-virtio-vga");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:qemu-kvm-device-usb-host");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:qemu-kvm-device-usb-redirect");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:qemu-kvm-docs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:qemu-kvm-tools");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:qemu-kvm-ui-egl-headless");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:qemu-kvm-ui-opengl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:qemu-pr-helper");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Oracle Linux 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");
  script_require_keys("Host/OracleLinux", "Host/RedHat/release", "Host/RedHat/rpm-list", "Host/local_checks_enabled");

  exit(0);
}


include('rpm.inc');

if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item('Host/OracleLinux')) audit(AUDIT_OS_NOT, 'Oracle Linux');
var os_release = get_kb_item("Host/RedHat/release");
if (isnull(os_release) || !pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux)", string:os_release)) audit(AUDIT_OS_NOT, 'Oracle Linux');
var os_ver = pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux) .*release ([0-9]+(\.[0-9]+)?)", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'Oracle Linux');
os_ver = os_ver[1];
if (! preg(pattern:"^9([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, 'Oracle Linux 9', 'Oracle Linux ' + 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$" && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Oracle Linux', cpu);

var pkgs = [
    {'reference':'qemu-guest-agent-8.2.0-11.el9_4', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
    {'reference':'qemu-img-8.2.0-11.el9_4', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
    {'reference':'qemu-kvm-8.2.0-11.el9_4', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
    {'reference':'qemu-kvm-audio-pa-8.2.0-11.el9_4', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
    {'reference':'qemu-kvm-block-blkio-8.2.0-11.el9_4', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
    {'reference':'qemu-kvm-block-curl-8.2.0-11.el9_4', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
    {'reference':'qemu-kvm-block-rbd-8.2.0-11.el9_4', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
    {'reference':'qemu-kvm-common-8.2.0-11.el9_4', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
    {'reference':'qemu-kvm-core-8.2.0-11.el9_4', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
    {'reference':'qemu-kvm-device-display-virtio-gpu-8.2.0-11.el9_4', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
    {'reference':'qemu-kvm-device-display-virtio-gpu-pci-8.2.0-11.el9_4', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
    {'reference':'qemu-kvm-device-display-virtio-vga-8.2.0-11.el9_4', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
    {'reference':'qemu-kvm-device-usb-host-8.2.0-11.el9_4', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
    {'reference':'qemu-kvm-device-usb-redirect-8.2.0-11.el9_4', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
    {'reference':'qemu-kvm-docs-8.2.0-11.el9_4', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
    {'reference':'qemu-kvm-tools-8.2.0-11.el9_4', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
    {'reference':'qemu-kvm-ui-egl-headless-8.2.0-11.el9_4', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
    {'reference':'qemu-kvm-ui-opengl-8.2.0-11.el9_4', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
    {'reference':'qemu-pr-helper-8.2.0-11.el9_4', 'cpu':'aarch64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
    {'reference':'qemu-guest-agent-8.2.0-11.el9_4', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
    {'reference':'qemu-img-8.2.0-11.el9_4', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
    {'reference':'qemu-kvm-8.2.0-11.el9_4', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
    {'reference':'qemu-kvm-audio-pa-8.2.0-11.el9_4', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
    {'reference':'qemu-kvm-block-blkio-8.2.0-11.el9_4', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
    {'reference':'qemu-kvm-block-curl-8.2.0-11.el9_4', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
    {'reference':'qemu-kvm-block-rbd-8.2.0-11.el9_4', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
    {'reference':'qemu-kvm-common-8.2.0-11.el9_4', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
    {'reference':'qemu-kvm-core-8.2.0-11.el9_4', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
    {'reference':'qemu-kvm-device-display-virtio-gpu-8.2.0-11.el9_4', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
    {'reference':'qemu-kvm-device-display-virtio-gpu-pci-8.2.0-11.el9_4', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
    {'reference':'qemu-kvm-device-display-virtio-vga-8.2.0-11.el9_4', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
    {'reference':'qemu-kvm-device-usb-host-8.2.0-11.el9_4', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
    {'reference':'qemu-kvm-device-usb-redirect-8.2.0-11.el9_4', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
    {'reference':'qemu-kvm-docs-8.2.0-11.el9_4', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
    {'reference':'qemu-kvm-tools-8.2.0-11.el9_4', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
    {'reference':'qemu-kvm-ui-egl-headless-8.2.0-11.el9_4', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
    {'reference':'qemu-kvm-ui-opengl-8.2.0-11.el9_4', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'},
    {'reference':'qemu-pr-helper-8.2.0-11.el9_4', 'cpu':'x86_64', 'release':'9', 'rpm_spec_vers_cmp':TRUE, 'epoch':'17'}
];

var flag = 0;
foreach var package_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;
  if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
  if (!empty_or_null(package_array['release'])) _release = 'EL' + package_array['release'];
  if (!empty_or_null(package_array['sp'])) sp = package_array['sp'];
  if (!empty_or_null(package_array['cpu'])) _cpu = package_array['cpu'];
  if (!empty_or_null(package_array['el_string'])) el_string = package_array['el_string'];
  if (!empty_or_null(package_array['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = package_array['rpm_spec_vers_cmp'];
  if (!empty_or_null(package_array['epoch'])) epoch = package_array['epoch'];
  if (!empty_or_null(package_array['allowmaj'])) allowmaj = package_array['allowmaj'];
  if (!empty_or_null(package_array['exists_check'])) exists_check = package_array['exists_check'];
  if (reference && _release) {
    if (exists_check) {
        if (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)) flag++;
    } else {
        if (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)) flag++;
    }
  }
}

if (flag)
{
  security_report_v4(
      port       : 0,
      severity   : SECURITY_WARNING,
      extra      : rpm_report_get()
  );
  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-img / qemu-kvm / etc');
}