Debian dsa-6417 : heif-gdk-pixbuf - security update

#%NASL_MIN_LEVEL 80900
#
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory dsa-6417. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(333527);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/08/08");

  script_cve_id(
    "CVE-2025-68431",
    "CVE-2026-32740",
    "CVE-2026-32741",
    "CVE-2026-32882",
    "CVE-2026-47178",
    "CVE-2026-47247",
    "CVE-2026-47709",
    "CVE-2026-47714",
    "CVE-2026-48029",
    "CVE-2026-49271",
    "CVE-2026-62289",
    "CVE-2026-62292"
  );
  script_xref(name:"IAVB", value:"2026-B-0010-S");
  script_xref(name:"IAVB", value:"2026-B-0158");

  script_name(english:"Debian dsa-6417 : heif-gdk-pixbuf - 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 13 host has packages installed that are affected by multiple vulnerabilities as referenced in the
dsa-6417 advisory.

    - -------------------------------------------------------------------------
    Debian Security Advisory DSA-6417-1                   [email protected]
    https://www.debian.org/security/                                  Aron Xu
    August 08, 2026                       https://www.debian.org/security/faq
    - -------------------------------------------------------------------------

    Package        : libheif
    CVE ID         : CVE-2025-68431 CVE-2026-32740 CVE-2026-32741 CVE-2026-32882
                     CVE-2026-47178 CVE-2026-47247 CVE-2026-47709 CVE-2026-47714
                     CVE-2026-48029 CVE-2026-49271 CVE-2026-62289 CVE-2026-62292
    Debian Bug     :

    Multiple security issues were discovered in libheif, an ISO/IEC 23008-12
    HEIF and AVIF image file format decoder and encoder, which may result in
    denial of service, the disclosure of sensitive memory contents or,
    potentially, the execution of arbitrary code if a malformed image file is
    processed.

    Note that in the fix for CVE-2026-47178, a heap out-of-bounds write in the
    uncompressed tile decoder, the affected format combinations are now rejected
    with heif_error_Unsupported_feature: uncompressed images with 4:2:0 or 4:2:2
    chroma subsampling that are tiled, or that use row or pixel interleave.
    Upstream corrected the offending arithmetic, but only after a restructuring
    of the uncompressed decoder that is not present in the version shipped in
    the stable distribution. Images in these configurations will no longer
    decode.

    For the stable distribution (trixie), these problems have been fixed in
    version 1.19.8-1+deb13u1.

    We recommend that you upgrade your libheif packages.

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

    Further information about Debian Security Advisories, how to apply
    these updates to your system and frequently asked questions can be
    found at: https://www.debian.org/security/

    Mailing list: [email protected]

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/libheif");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2025-68431");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-32740");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-32741");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-32882");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-47178");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-47247");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-47709");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-47714");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-48029");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-49271");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-62289");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-62292");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/trixie/libheif");
  script_set_attribute(attribute:"solution", value:
"Upgrade the heif-gdk-pixbuf packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/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:H/I:H/A:H");
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  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2025-68431");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2026-47178");
  script_set_attribute(attribute:"cvss4_score_source", value:"CVE-2026-47709");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
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  script_set_attribute(attribute:"vuln_publication_date", value:"2025/12/29");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/08/08");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/08/08");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:heif-gdk-pixbuf");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:heif-thumbnailer");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libheif-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libheif-examples");
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  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libheif-plugin-jpegenc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libheif-plugin-kvazaar");
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  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libheif-plugins-all");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libheif1");
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  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:"^(13)\.[0-9]+", string:debian_release)) audit(AUDIT_OS_NOT, 'Debian 13.0', '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': '13.0', 'prefix': 'heif-gdk-pixbuf', 'reference': '1.19.8-1+deb13u1'},
    {'release': '13.0', 'prefix': 'heif-thumbnailer', 'reference': '1.19.8-1+deb13u1'},
    {'release': '13.0', 'prefix': 'libheif-dev', 'reference': '1.19.8-1+deb13u1'},
    {'release': '13.0', 'prefix': 'libheif-examples', 'reference': '1.19.8-1+deb13u1'},
    {'release': '13.0', 'prefix': 'libheif-plugin-aomdec', 'reference': '1.19.8-1+deb13u1'},
    {'release': '13.0', 'prefix': 'libheif-plugin-aomenc', 'reference': '1.19.8-1+deb13u1'},
    {'release': '13.0', 'prefix': 'libheif-plugin-dav1d', 'reference': '1.19.8-1+deb13u1'},
    {'release': '13.0', 'prefix': 'libheif-plugin-ffmpegdec', 'reference': '1.19.8-1+deb13u1'},
    {'release': '13.0', 'prefix': 'libheif-plugin-j2kdec', 'reference': '1.19.8-1+deb13u1'},
    {'release': '13.0', 'prefix': 'libheif-plugin-j2kenc', 'reference': '1.19.8-1+deb13u1'},
    {'release': '13.0', 'prefix': 'libheif-plugin-jpegdec', 'reference': '1.19.8-1+deb13u1'},
    {'release': '13.0', 'prefix': 'libheif-plugin-jpegenc', 'reference': '1.19.8-1+deb13u1'},
    {'release': '13.0', 'prefix': 'libheif-plugin-kvazaar', 'reference': '1.19.8-1+deb13u1'},
    {'release': '13.0', 'prefix': 'libheif-plugin-libde265', 'reference': '1.19.8-1+deb13u1'},
    {'release': '13.0', 'prefix': 'libheif-plugin-rav1e', 'reference': '1.19.8-1+deb13u1'},
    {'release': '13.0', 'prefix': 'libheif-plugin-svtenc', 'reference': '1.19.8-1+deb13u1'},
    {'release': '13.0', 'prefix': 'libheif-plugin-x265', 'reference': '1.19.8-1+deb13u1'},
    {'release': '13.0', 'prefix': 'libheif-plugins-all', 'reference': '1.19.8-1+deb13u1'},
    {'release': '13.0', 'prefix': 'libheif1', 'reference': '1.19.8-1+deb13u1'}
];

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, 'heif-gdk-pixbuf / heif-thumbnailer / libheif-dev / libheif-examples / etc');
}