Debian dla-4371 : 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-4371. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(275477);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/11/14");

  script_cve_id("CVE-2025-47806", "CVE-2025-47807", "CVE-2025-47808");

  script_name(english:"Debian dla-4371 : 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 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the
dla-4371 advisory.

    -------------------------------------------------------------------------
    Debian LTS Advisory DLA-4371-1                [email protected]
    https://www.debian.org/lts/security/                        Jeremy Bcha
    November 14, 2025                             https://wiki.debian.org/LTS
    -------------------------------------------------------------------------

    Package        : gst-plugins-base1.0
    Version        : 1.18.4-2+deb11u4
    CVE ID         : CVE-2025-47806 CVE-2025-47807 CVE-2025-47808

    Multiple vulnerabilities were fixed in the subparse plugin of
    gst-plugins-base1.0. GStreamer is a popular multimedia framework.

    CVE-2025-47806: Fix DoS via stack overflow in subparse plugin

    CVE-2025-47807: Fix DoS via null-deref in subparse plugin

    CVE-2025-47808: Fix DoS via null-deref in subparse plugin

    For Debian 11 bullseye, these problems have been fixed in version
    1.18.4-2+deb11u4.

    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: This is a digitally signed message part

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-2025-47806");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2025-47807");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2025-47808");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/bullseye/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:N/I:N/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:L/PR:N/UI:R/S:U/C:N/I:N/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-2025-47807");

  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:"2025/06/26");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/11/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/11/14");

  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:11.0");
  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) 2025 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.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:"^(11)\.[0-9]+", string:debian_release)) audit(AUDIT_OS_NOT, 'Debian 11.0', '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': '11.0', 'prefix': 'gir1.2-gst-plugins-base-1.0', 'reference': '1.18.4-2+deb11u4'},
    {'release': '11.0', 'prefix': 'gstreamer1.0-alsa', 'reference': '1.18.4-2+deb11u4'},
    {'release': '11.0', 'prefix': 'gstreamer1.0-gl', 'reference': '1.18.4-2+deb11u4'},
    {'release': '11.0', 'prefix': 'gstreamer1.0-plugins-base', 'reference': '1.18.4-2+deb11u4'},
    {'release': '11.0', 'prefix': 'gstreamer1.0-plugins-base-apps', 'reference': '1.18.4-2+deb11u4'},
    {'release': '11.0', 'prefix': 'gstreamer1.0-x', 'reference': '1.18.4-2+deb11u4'},
    {'release': '11.0', 'prefix': 'libgstreamer-gl1.0-0', 'reference': '1.18.4-2+deb11u4'},
    {'release': '11.0', 'prefix': 'libgstreamer-plugins-base1.0-0', 'reference': '1.18.4-2+deb11u4'},
    {'release': '11.0', 'prefix': 'libgstreamer-plugins-base1.0-dev', 'reference': '1.18.4-2+deb11u4'}
];

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_WARNING,
    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');
}