Debian dla-4789 : libde265-0 - 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-4789. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(348349);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/09/20");

  script_cve_id(
    "CVE-2023-51792",
    "CVE-2024-38949",
    "CVE-2024-38950",
    "CVE-2026-33164",
    "CVE-2026-33165",
    "CVE-2026-45382",
    "CVE-2026-45383",
    "CVE-2026-49295",
    "CVE-2026-49337",
    "CVE-2026-49346",
    "CVE-2026-54240",
    "CVE-2026-54241"
  );

  script_name(english:"Debian dla-4789 : libde265-0 - 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-4789 advisory.

    -------------------------------------------------------------------------
    Debian LTS Advisory DLA-4789-1                [email protected]
    https://www.debian.org/lts/security/                         Tobias Frost
    September 20, 2026                            https://wiki.debian.org/LTS
    -------------------------------------------------------------------------

    Package        : libde265
    Version        : 1.0.11-1+deb12u3
    CVE ID         : CVE-2023-51792 CVE-2024-38949 CVE-2024-38950 CVE-2026-33164
                     CVE-2026-33165 CVE-2026-45382 CVE-2026-45383 CVE-2026-49295
                     CVE-2026-49337 CVE-2026-49346 CVE-2026-54240 CVE-2026-54241
    Debian Bug     : 1074416 1131468 1131469 1140431

    Multiple issues were found in libde265, an open source implementation of
    the H.265 video codec, which potentially may result in denial of
    service, heap/buffer overflows, information disclosure or code
    execution or have unspecified other impact.

    CVE-2023-51792

        Buffer Overflow vulnerability allows a local attacker to cause a
        denial of service via the allocation size exceeding the maximum
        supported size of 0x10000000000.

    CVE-2024-38949

        Heap Buffer Overflow vulnerability allows attackers to crash the
        application via crafted payload.

    CVE-2024-38950

        Heap Buffer Overflow vulnerability allows attackers to crash the
        application via crafted payload.

    CVE-2026-33164

        A malformed H.265 PPS NAL unit causes a segmentation fault.

    CVE-2026-33165

        A crafted HEVC bitstream causes an out-of-bounds heap write.

    CVE-2026-45382

        Heap-buffer-overflow READ in decode_slice_unit_tiles via unvalidated
        PPS tile geometry.

    CVE-2026-45383

        Heap buffer overflow (OOB read) in decode_slice_unit_WPP() via
        out-of-bounds CtbAddrRStoTS access.

    CVE-2026-49295

        Out-of-bounds write in process_reference_picture_set via predicted
        short-term RPS.

    CVE-2026-49337

        Unbounded memory accumulation via orphaned slice headers in
        `read_slice_NAL`

    CVE-2026-49346

        Heap buffer overflow in de265_image_get_buffer via SPS dimension
        integer overflow

    CVE-2026-54240

        Pixel accessor signed integer overflow causes heap OOB read/write

    CVE-2026-54241

        SAO sequential filter heap buffer overflow via signed integer
        overflow


    Two additional vulnerabilities for which CVE IDs are not yet available
    have been fixed. (The identifier in brackets is the GitHub identifier):

    CVE-2026-XXXX (GHSA-xp3h-6f5r-8cxp)

        Concurrent Execution using Shared Resource with Improper
        Synchronization ('Race Condition') and Use After Free and Double Free

    CVE-2026-XXXX (GHSA-mm7m-v26f-wf8x)

        heap-use-after-free in decoder_context::reset() via dangling
        previous_slice_header


    For Debian 12 bookworm, these problems have been fixed in version
    1.0.11-1+deb12u3.

    We recommend that you upgrade your libde265 packages.

    For the detailed security status of libde265 please refer to
    its security tracker page at:
    https://security-tracker.debian.org/tracker/libde265

    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.");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/source-package/libde265");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2023-51792");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2024-38949");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2024-38950");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-33164");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-33165");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-45382");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-45383");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-49295");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-49337");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-49346");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-54240");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-54241");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/bookworm/libde265");
  script_set_attribute(attribute:"solution", value:
"Upgrade the libde265-0 packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/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:N/AC:L/PR:N/UI:N/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:"cvss4_vector", value:"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N");
  script_set_attribute(attribute:"cvss4_threat_vector", value:"CVSS:4.0/E:P");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-33164");

  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:"2024/04/19");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/09/20");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/09/20");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libde265-0");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libde265-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libde265-examples");
  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_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:"^(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': 'libde265-0', 'reference': '1.0.11-1+deb12u3'},
    {'release': '12.0', 'prefix': 'libde265-dev', 'reference': '1.0.11-1+deb12u3'},
    {'release': '12.0', 'prefix': 'libde265-examples', 'reference': '1.0.11-1+deb12u3'}
];

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, 'libde265-0 / libde265-dev / libde265-examples');
}