Debian dla-4874 : eog - 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-4874. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(374858);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/11/01");

  script_cve_id("CVE-2026-107651", "CVE-2026-118475");

  script_name(english:"Debian dla-4874 : eog - 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-4874 advisory.

    - -------------------------------------------------------------------------
    Debian LTS Advisory DLA-4874-1                [email protected]
    https://www.debian.org/lts/security/                           Chris Lamb
    October 31, 2026                              https://wiki.debian.org/LTS
    - -------------------------------------------------------------------------

    Package        : eog
    Version        : 43.2-1+deb12u1
    CVE ID         : CVE-2026-107651 CVE-2026-118475
    Debian Bug     : 1150455

    Two vulnerabilities were discovered in Eye of GNOME (eog), the
    lightweight image viewer:

    CVE-2026-107651

        A heap-based buffer overflow existed in the PNG metadata reader
        due to improper state handling when parsing split metadata
        chunks. A remote attacker could have exploited this flaw by
        enticing a user into opening a specially crafted `.png` file,
        potentially leading to arbitrary code execution or a Denial of
        Service (DoS) via crashing the application.

    CVE-2026-118475

        When parsing a specially crafted PNG image containing malformed
        color profile metadata, *eog* failed to validate chunk boundaries
        while searching for a null terminator. An attacker could have
        tricked a user into opening a malicious image, causing
        the application to read past the allocated buffer. This
        issue could also have led to an application crash,
        resulting in a Denial of Service (DoS) or potentially
        exposing sensitive memory contents.

    For Debian 12 bookworm, these problems have been fixed in version
    43.2-1+deb12u1.

    We recommend that you upgrade your eog packages.

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

    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/eog");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-107651");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-118475");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/bookworm/eog");
  script_set_attribute(attribute:"solution", value:
"Upgrade the eog packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:H/Au:N/C:P/I:N/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:L");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-118475");

  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:"2026/10/08");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/10/31");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/11/01");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:eog");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:eog-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': 'eog', 'reference': '43.2-1+deb12u1'},
    {'release': '12.0', 'prefix': 'eog-dev', 'reference': '43.2-1+deb12u1'}
];

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_NOTE,
    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, 'eog / eog-dev');
}