Debian dla-4241 : ffmpeg - 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-4241. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(242064);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/07/14");

  script_cve_id(
    "CVE-2023-6601",
    "CVE-2023-6602",
    "CVE-2023-6604",
    "CVE-2023-6605"
  );
  script_xref(name:"IAVB", value:"2024-B-0110-S");
  script_xref(name:"IAVB", value:"2025-B-0018-S");

  script_name(english:"Debian dla-4241 : ffmpeg - 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-4241 advisory.

    - -------------------------------------------------------------------------
    Debian LTS Advisory DLA-4241-1                [email protected]
    https://www.debian.org/lts/security/                          Adrian Bunk
    July 14, 2025                                 https://wiki.debian.org/LTS
    - -------------------------------------------------------------------------

    Package        : ffmpeg
    Version        : 7:4.3.9-0+deb11u1
    CVE ID         : CVE-2023-6601 CVE-2023-6602 CVE-2023-6604 CVE-2023-6605

    Multiple vulnerabilities have been fixed in the multimedia framework FFmpeg.

    CVE-2023-6601

        Triggering arbitrary demuxers via base64 data URIs

    CVE-2023-6602

        Improper parsing of input files in HLS playlists

    CVE-2023-6604

        Demuxing of arbitrary data as XBIN-formatted data

    CVE-2023-6605

        Arbitrary HTTP GET requests via crafted DASH playlist

    For Debian 11 bullseye, these problems have been fixed in version
    7:4.3.9-0+deb11u1.

    We recommend that you upgrade your ffmpeg packages.

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

    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

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.");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/source-package/ffmpeg");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2023-6601");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2023-6602");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2023-6604");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2023-6605");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/bullseye/ffmpeg");
  script_set_attribute(attribute:"solution", value:
"Upgrade the ffmpeg packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N");
  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:L/I:N/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2023-6602");

  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:"2024/08/08");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/07/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/07/14");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:ffmpeg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:ffmpeg-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libavcodec-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libavcodec-extra");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libavcodec-extra58");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libavcodec58");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libavdevice-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libavdevice58");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libavfilter-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libavfilter-extra");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libavfilter-extra7");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libavfilter7");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libavformat-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libavformat58");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libavresample-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libavresample4");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libavutil-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libavutil56");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libpostproc-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libpostproc55");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libswresample-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libswresample3");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libswscale-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libswscale5");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:11.0");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_set_attribute(attribute:"stig_severity", value:"I");
  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': 'ffmpeg', 'reference': '7:4.3.9-0+deb11u1'},
    {'release': '11.0', 'prefix': 'ffmpeg-doc', 'reference': '7:4.3.9-0+deb11u1'},
    {'release': '11.0', 'prefix': 'libavcodec-dev', 'reference': '7:4.3.9-0+deb11u1'},
    {'release': '11.0', 'prefix': 'libavcodec-extra', 'reference': '7:4.3.9-0+deb11u1'},
    {'release': '11.0', 'prefix': 'libavcodec-extra58', 'reference': '7:4.3.9-0+deb11u1'},
    {'release': '11.0', 'prefix': 'libavcodec58', 'reference': '7:4.3.9-0+deb11u1'},
    {'release': '11.0', 'prefix': 'libavdevice-dev', 'reference': '7:4.3.9-0+deb11u1'},
    {'release': '11.0', 'prefix': 'libavdevice58', 'reference': '7:4.3.9-0+deb11u1'},
    {'release': '11.0', 'prefix': 'libavfilter-dev', 'reference': '7:4.3.9-0+deb11u1'},
    {'release': '11.0', 'prefix': 'libavfilter-extra', 'reference': '7:4.3.9-0+deb11u1'},
    {'release': '11.0', 'prefix': 'libavfilter-extra7', 'reference': '7:4.3.9-0+deb11u1'},
    {'release': '11.0', 'prefix': 'libavfilter7', 'reference': '7:4.3.9-0+deb11u1'},
    {'release': '11.0', 'prefix': 'libavformat-dev', 'reference': '7:4.3.9-0+deb11u1'},
    {'release': '11.0', 'prefix': 'libavformat58', 'reference': '7:4.3.9-0+deb11u1'},
    {'release': '11.0', 'prefix': 'libavresample-dev', 'reference': '7:4.3.9-0+deb11u1'},
    {'release': '11.0', 'prefix': 'libavresample4', 'reference': '7:4.3.9-0+deb11u1'},
    {'release': '11.0', 'prefix': 'libavutil-dev', 'reference': '7:4.3.9-0+deb11u1'},
    {'release': '11.0', 'prefix': 'libavutil56', 'reference': '7:4.3.9-0+deb11u1'},
    {'release': '11.0', 'prefix': 'libpostproc-dev', 'reference': '7:4.3.9-0+deb11u1'},
    {'release': '11.0', 'prefix': 'libpostproc55', 'reference': '7:4.3.9-0+deb11u1'},
    {'release': '11.0', 'prefix': 'libswresample-dev', 'reference': '7:4.3.9-0+deb11u1'},
    {'release': '11.0', 'prefix': 'libswresample3', 'reference': '7:4.3.9-0+deb11u1'},
    {'release': '11.0', 'prefix': 'libswscale-dev', 'reference': '7:4.3.9-0+deb11u1'},
    {'release': '11.0', 'prefix': 'libswscale5', 'reference': '7:4.3.9-0+deb11u1'}
];

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, 'ffmpeg / ffmpeg-doc / libavcodec-dev / libavcodec-extra / etc');
}