Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 26.04 LTS : GStreamer Ugly Plugins vulnerabilities (USN-8896-1)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-8896-1. The text
# itself is copyright (C) Canonical, Inc. See
# <https://ubuntu.com/security/notices>. Ubuntu(R) is a registered
# trademark of Canonical, Inc.
##

include('compat.inc');

if (description)
{
  script_id(365374);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/10/13");

  script_cve_id(
    "CVE-2023-38103",
    "CVE-2023-38104",
    "CVE-2026-2920",
    "CVE-2026-2922",
    "CVE-2026-19389",
    "CVE-2026-53703",
    "CVE-2026-53704"
  );
  script_xref(name:"USN", value:"8896-1");

  script_name(english:"Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 26.04 LTS : GStreamer Ugly Plugins vulnerabilities (USN-8896-1)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Ubuntu host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 26.04 LTS host has packages installed that
are affected by multiple vulnerabilities as referenced in the USN-8896-1 advisory.

    Michael Randrianantenaina discovered that GStreamer's Ugly Plugins incorrectly handled certain malformed
    RealMedia files. If a user were tricked into opening a crafted media file, an attacker could possibly use
    this issue to execute arbitrary code. This issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, Ubuntu
    20.04 LTS and Ubuntu 22.04 LTS. (CVE-2023-38103, CVE-2023-38104)

    It was discovered that GStreamer's Ugly Plugins incorrectly handled certain malformed ASF and RealMedia
    files. If a user were tricked into opening a crafted media file, an attacker could possibly use this issue
    to execute arbitrary code. This issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS
    and Ubuntu 22.04 LTS and Ubuntu 24.04 LTS. (CVE-2026-2920, CVE-2026-2922)

    Tianshuo Han discovered that GStreamer's Ugly Plugins incorrectly handled certain malformed RealMedia
    files. If a user were tricked into opening a crafted media file, an attacker could possibly use this issue
    to cause a denial of service or expose sensitive information. (CVE-2026-53703, CVE-2026-53704)

    Seonwook Kim discovered that GStreamer's Ugly Plugins incorrectly handled certain malformed ASF files. If
    a user were tricked into opening a crafted media file, an attacker could possibly use this issue to cause
    a denial of service or expose sensitive information. (CVE-2026-19389)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

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://ubuntu.com/security/notices/USN-8896-1");
  script_set_attribute(attribute:"solution", value:
"Update the affected gstreamer1.0-plugins-ugly and / or gstreamer1.0-plugins-ugly-amr packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/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:N/AC:L/PR:N/UI:R/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-2023-38104");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2024/05/03");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/10/07");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/10/13");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:16.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:18.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:20.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:22.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:24.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:26.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:gstreamer1.0-plugins-ugly");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:gstreamer1.0-plugins-ugly-amr");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

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

  script_copyright(english:"Ubuntu Security Notice (C) 2026 Canonical, Inc. / NASL script (C) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info2.nasl");
  script_require_keys("Host/cpu", "Host/Ubuntu", "Host/Ubuntu/release", "Host/Debian/dpkg-l");

  exit(0);
}

include('debian_package.inc');

if ( ! get_kb_item('Host/local_checks_enabled') ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item('Host/Ubuntu/release');
if ( isnull(os_release) ) audit(AUDIT_OS_NOT, 'Ubuntu');
os_release = chomp(os_release);
if (! ('16.04' >< os_release || '18.04' >< os_release || '20.04' >< os_release || '22.04' >< os_release || '24.04' >< os_release || '26.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 16.04 / 18.04 / 20.04 / 22.04 / 24.04 / 26.04', 'Ubuntu ' + os_release);
if ( ! get_kb_item('Host/Debian/dpkg-l') ) 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) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Ubuntu', cpu);

var pkgs = [
    {'osver': '16.04', 'pkgname': 'gstreamer1.0-plugins-ugly', 'pkgver': '1.8.3-1ubuntu0.1+esm2', 'cves': ['CVE-2023-38103', 'CVE-2023-38104', 'CVE-2026-2920', 'CVE-2026-2922', 'CVE-2026-19389', 'CVE-2026-53703', 'CVE-2026-53704']},
    {'osver': '16.04', 'pkgname': 'gstreamer1.0-plugins-ugly-amr', 'pkgver': '1.8.3-1ubuntu0.1+esm2', 'cves': ['CVE-2023-38103', 'CVE-2023-38104', 'CVE-2026-2920', 'CVE-2026-2922', 'CVE-2026-19389', 'CVE-2026-53703', 'CVE-2026-53704']},
    {'osver': '18.04', 'pkgname': 'gstreamer1.0-plugins-ugly', 'pkgver': '1.14.5-0ubuntu1~18.04.1+esm1', 'cves': ['CVE-2023-38103', 'CVE-2023-38104', 'CVE-2026-2920', 'CVE-2026-2922', 'CVE-2026-19389', 'CVE-2026-53703', 'CVE-2026-53704']},
    {'osver': '20.04', 'pkgname': 'gstreamer1.0-plugins-ugly', 'pkgver': '1.16.2-2ubuntu0.1~esm1', 'cves': ['CVE-2023-38103', 'CVE-2023-38104', 'CVE-2026-2920', 'CVE-2026-2922', 'CVE-2026-19389', 'CVE-2026-53703', 'CVE-2026-53704']},
    {'osver': '22.04', 'pkgname': 'gstreamer1.0-plugins-ugly', 'pkgver': '1.20.1-1ubuntu0.1~esm1', 'cves': ['CVE-2023-38103', 'CVE-2023-38104', 'CVE-2026-2920', 'CVE-2026-2922', 'CVE-2026-19389', 'CVE-2026-53703', 'CVE-2026-53704']},
    {'osver': '24.04', 'pkgname': 'gstreamer1.0-plugins-ugly', 'pkgver': '1.24.1-1ubuntu0.1~esm1', 'cves': ['CVE-2026-2920', 'CVE-2026-2922', 'CVE-2026-19389', 'CVE-2026-53703', 'CVE-2026-53704']},
    {'osver': '26.04', 'pkgname': 'gstreamer1.0-plugins-ugly', 'pkgver': '1.28.2-1ubuntu0.1~esm1', 'cves': ['CVE-2026-19389', 'CVE-2026-53703', 'CVE-2026-53704']}
];

var flag = 0;
foreach var package_array ( pkgs ) {
  var osver = NULL;
  var pkgname = NULL;
  var pkgver = NULL;
  if (!empty_or_null(package_array['osver'])) osver = package_array['osver'];
  if (!empty_or_null(package_array['pkgname'])) pkgname = package_array['pkgname'];
  if (!empty_or_null(package_array['pkgver'])) pkgver = package_array['pkgver'];
  if (!empty_or_null(package_array['cves'])) cves = package_array['cves'];
  if (osver && pkgname && pkgver) {
    if (deb_check(release:osver, prefix:pkgname, reference:pkgver, cves:cves)) flag++;
  }
}

if (flag)
{
  var extra = '';
  extra += ubuntu_report_get();
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : extra
  );
  exit(0);
}
else
{
  var tested = ubuntu_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'gstreamer1.0-plugins-ugly / gstreamer1.0-plugins-ugly-amr');
}