Debian dsa-6436 : chromium - 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-6436. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(335180);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/08/13");

  script_cve_id(
    "CVE-2026-19556",
    "CVE-2026-19557",
    "CVE-2026-19558",
    "CVE-2026-19559",
    "CVE-2026-19560"
  );

  script_name(english:"Debian dsa-6436 : chromium - 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-6436 advisory.

    - -------------------------------------------------------------------------
    Debian Security Advisory DSA-6436-1                   [email protected]
    https://www.debian.org/security/                           Andres Salomon
    August 13, 2026                       https://www.debian.org/security/faq
    - -------------------------------------------------------------------------

    Package        : chromium
    CVE ID         : CVE-2026-19556 CVE-2026-19557 CVE-2026-19558 CVE-2026-19559
                     CVE-2026-19560

    Security issues were discovered in Chromium which could result
    in the execution of arbitrary code, denial of service, or information
    disclosure.

    For the stable distribution (trixie), these problems have been fixed in
    version 151.0.7922.137-1~deb13u1.

    We recommend that you upgrade your chromium packages.

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

    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/chromium");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-19556");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-19557");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-19558");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-19559");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-19560");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/trixie/chromium");
  script_set_attribute(attribute:"solution", value:
"Upgrade the chromium packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-19560");

  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:"2026/08/11");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/08/13");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/08/13");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:chromium");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:chromium-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:chromium-driver");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:chromium-headless-shell");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:chromium-l10n");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:chromium-sandbox");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:chromium-shell");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:13.0");
  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:"^(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': 'chromium', 'reference': '151.0.7922.137-1~deb13u1'},
    {'release': '13.0', 'prefix': 'chromium-common', 'reference': '151.0.7922.137-1~deb13u1'},
    {'release': '13.0', 'prefix': 'chromium-driver', 'reference': '151.0.7922.137-1~deb13u1'},
    {'release': '13.0', 'prefix': 'chromium-headless-shell', 'reference': '151.0.7922.137-1~deb13u1'},
    {'release': '13.0', 'prefix': 'chromium-l10n', 'reference': '151.0.7922.137-1~deb13u1'},
    {'release': '13.0', 'prefix': 'chromium-sandbox', 'reference': '151.0.7922.137-1~deb13u1'},
    {'release': '13.0', 'prefix': 'chromium-shell', 'reference': '151.0.7922.137-1~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, 'chromium / chromium-common / chromium-driver / chromium-headless-shell / etc');
}