Debian dla-4828 : gir1.2-gst-plugins-base-1.0 - security update

#%NASL_MIN_LEVEL 80900
#
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory dla-4828. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(367988);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/10/20");

  script_cve_id("CVE-2026-18297", "CVE-2026-85150");

  script_name(english:"Debian dla-4828 : gir1.2-gst-plugins-base-1.0 - security update");

  script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing one or more security-related updates.");
  script_set_attribute(attribute:"description", value:
"The remote Debian 12 host has packages installed that are affected by multiple vulnerabilities as referenced in the
dla-4828 advisory.

    -------------------------------------------------------------------------
    Debian LTS Advisory DLA-4828-1                [email protected]
    https://www.debian.org/lts/security/                  Andreans Henriksson
    October 08, 2026                              https://wiki.debian.org/LTS
    -------------------------------------------------------------------------

    Package        : gst-plugins-base1.0
    Version        : 1.22.0-3+deb12u7
    CVE ID         : CVE-2026-18297 CVE-2026-85150

    Multiple vulnerabilities has been discovered in the base set of plugins and
    supporting libraries for GStreamer, a framework for processing audio and video
    streams.

    CVE-2026-18297

        An buffer overflow was discovered in the OPUS audio decoder of the
        GStreamer media framework, which may result in denial of service
        or potentially the execution of arbitrary code if a malformed
        audio file is processed.

    CVE-2026-85150

        Roy Lau discovered a NULL pointer dereference in GStreamer's RTSP library
        when parsing Digest authentication headers. A remote attacker could exploit
        this flaw to cause a denial of service (application crash) by sending a
        specially crafted request to an RTSP server with authentication enabled, or
        by supplying a crafted response to an RTSP client from a malicious server.

    For Debian 12 bookworm, these problems have been fixed in version
    1.22.0-3+deb12u7.

    We recommend that you upgrade your gst-plugins-base1.0 packages.

    For the detailed security status of gst-plugins-base1.0 please refer to
    its security tracker page at:
    https://security-tracker.debian.org/tracker/gst-plugins-base1.0

    Further information about Debian LTS security advisories, how to apply
    these updates to your system and frequently asked questions can be
    found at: https://wiki.debian.org/LTS
    Attachment:
    signature.asc
    Description: PGP signature

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

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  # https://security-tracker.debian.org/tracker/source-package/gst-plugins-base1.0
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?43b9aaa1");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-18297");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-85150");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/bookworm/gst-plugins-base1.0");
  script_set_attribute(attribute:"solution", value:
"Upgrade the gir1.2-gst-plugins-base-1.0 packages.");
  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: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-2026-18297");

  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:"2026/08/20");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/10/08");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/10/20");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gir1.2-gst-plugins-base-1.0");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gstreamer1.0-alsa");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gstreamer1.0-gl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gstreamer1.0-plugins-base");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gstreamer1.0-plugins-base-apps");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gstreamer1.0-x");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libgstreamer-gl1.0-0");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libgstreamer-plugins-base1.0-0");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libgstreamer-plugins-base1.0-dev");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:12.0");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info2.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Debian/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);
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);

var debian_release = get_kb_item('Host/Debian/release');
if ( isnull(debian_release) ) audit(AUDIT_OS_NOT, 'Debian');
debian_release = chomp(debian_release);
if (! preg(pattern:"^(12)\.[0-9]+", string:debian_release)) audit(AUDIT_OS_NOT, 'Debian 12.0', 'Debian ' + debian_release);
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, 'Debian', cpu);

var pkgs = [
    {'release': '12.0', 'prefix': 'gir1.2-gst-plugins-base-1.0', 'reference': '1.22.0-3+deb12u7'},
    {'release': '12.0', 'prefix': 'gstreamer1.0-alsa', 'reference': '1.22.0-3+deb12u7'},
    {'release': '12.0', 'prefix': 'gstreamer1.0-gl', 'reference': '1.22.0-3+deb12u7'},
    {'release': '12.0', 'prefix': 'gstreamer1.0-plugins-base', 'reference': '1.22.0-3+deb12u7'},
    {'release': '12.0', 'prefix': 'gstreamer1.0-plugins-base-apps', 'reference': '1.22.0-3+deb12u7'},
    {'release': '12.0', 'prefix': 'gstreamer1.0-x', 'reference': '1.22.0-3+deb12u7'},
    {'release': '12.0', 'prefix': 'libgstreamer-gl1.0-0', 'reference': '1.22.0-3+deb12u7'},
    {'release': '12.0', 'prefix': 'libgstreamer-plugins-base1.0-0', 'reference': '1.22.0-3+deb12u7'},
    {'release': '12.0', 'prefix': 'libgstreamer-plugins-base1.0-dev', 'reference': '1.22.0-3+deb12u7'}
];

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

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : deb_report_get()
  );
  exit(0);
}
else
{
  var tested = deb_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'gir1.2-gst-plugins-base-1.0 / gstreamer1.0-alsa / gstreamer1.0-gl / etc');
}