Debian dla-4223 : debian-security-support - 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-4223. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(240231);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/06/21");

  script_name(english:"Debian dla-4223 : debian-security-support - security update");

  script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing a security-related update.");
  script_set_attribute(attribute:"description", value:
"The remote Debian 11 host has a package installed that is affected by a vulnerability as referenced in the dla-4223
advisory.

    -------------------------------------------------------------------------
    Debian LTS Advisory DLA-4223-1                [email protected]
    https://www.debian.org/lts/security/               Santiago Ruano Rincn
    June 21, 2025                                 https://wiki.debian.org/LTS
    -------------------------------------------------------------------------

    Package        : debian-security-support
    Version        : 1:11+2025.06.21
    Debian Bug     : 1100929 1106203

    debian-security-support, the Debian security support coverage checker, has been
    updated in bullseye-security to mark the end of security support of the
    following package:

    * odoo

    As well, the security support for the following packages has been
    limited:

    * gobgp
    * musescore2
    * musescore3

    Moreover, due to a bug, packages whose binary version differed from their
    source package version were not correctly identified by
    check-security-support.

    For Debian 11 bullseye, these problems have been fixed in version
    1:11+2025.06.21.

    We recommend that you upgrade your debian-security-support packages.

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

    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 this issue but has instead relied only on the application's self-reported version
number.");
  # https://security-tracker.debian.org/tracker/source-package/debian-security-support
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?975bffe2");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/bullseye/debian-security-support");
  script_set_attribute(attribute:"solution", value:
"Upgrade the debian-security-support packages.");
  script_set_attribute(attribute:"risk_factor", value:"High");

  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:"2025/06/21");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/06/21");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/06/21");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:debian-security-support");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:11.0");
  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) 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': 'debian-security-support', 'reference': '1:11+2025.06.21'}
];

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, 'debian-security-support');
}