Debian dsa-6113 : libcrypto3-udeb - 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-6113. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(296910);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/02/03");

  script_cve_id(
    "CVE-2025-11187",
    "CVE-2025-15467",
    "CVE-2025-15468",
    "CVE-2025-15469",
    "CVE-2025-66199",
    "CVE-2025-68160",
    "CVE-2025-69418",
    "CVE-2025-69419",
    "CVE-2025-69420",
    "CVE-2025-69421",
    "CVE-2026-22795",
    "CVE-2026-22796"
  );

  script_name(english:"Debian dsa-6113 : libcrypto3-udeb - 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 / 13 host has packages installed that are affected by multiple vulnerabilities as referenced in the
dsa-6113 advisory.

    - -------------------------------------------------------------------------
    Debian Security Advisory DSA-6113-1                   [email protected]
    https://www.debian.org/security/                     Salvatore Bonaccorso
    January 27, 2026                      https://www.debian.org/security/faq
    - -------------------------------------------------------------------------

    Package        : openssl
    CVE ID         : CVE-2025-11187 CVE-2025-15467 CVE-2025-15468 CVE-2025-15469
                     CVE-2025-66199 CVE-2025-68160 CVE-2025-69418 CVE-2025-69419
                     CVE-2025-69420 CVE-2025-69421 CVE-2026-22795 CVE-2026-22796

    Multiple vulnerabilities have been discovered in OpenSSL, a Secure
    Sockets Layer toolkit, which may result in denial of service,
    information leaks, or potentially remote code execution.

    Additional details can be found in the upstream advisory:
    https://openssl-library.org/news/secadv/20260127.txt

    For the oldstable distribution (bookworm), these problems have been fixed
    in version 3.0.18-1~deb12u2.

    For the stable distribution (trixie), these problems have been fixed in
    version 3.5.4-1~deb13u2.

    We recommend that you upgrade your openssl packages.

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

    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/openssl");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2025-11187");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2025-15467");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2025-15468");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2025-15469");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2025-66199");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2025-68160");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2025-69418");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2025-69419");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2025-69420");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2025-69421");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-22795");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-22796");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/bookworm/openssl");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/trixie/openssl");
  script_set_attribute(attribute:"solution", value:
"Upgrade the libcrypto3-udeb 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:"cvss_score_source", value:"CVE-2025-69421");

  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:"2026/01/27");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/01/27");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/01/27");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libcrypto3-udeb");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libssl-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libssl-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libssl3");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libssl3-udeb");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libssl3t64");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:openssl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:openssl-provider-fips");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:openssl-provider-legacy");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:12.0");
  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:"^(12)\.[0-9]+|^(13)\.[0-9]+", string:debian_release)) audit(AUDIT_OS_NOT, 'Debian 12.0 / 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': '12.0', 'prefix': 'libcrypto3-udeb', 'reference': '3.0.18-1~deb12u2'},
    {'release': '12.0', 'prefix': 'libssl-dev', 'reference': '3.0.18-1~deb12u2'},
    {'release': '12.0', 'prefix': 'libssl-doc', 'reference': '3.0.18-1~deb12u2'},
    {'release': '12.0', 'prefix': 'libssl3', 'reference': '3.0.18-1~deb12u2'},
    {'release': '12.0', 'prefix': 'libssl3-udeb', 'reference': '3.0.18-1~deb12u2'},
    {'release': '12.0', 'prefix': 'openssl', 'reference': '3.0.18-1~deb12u2'},
    {'release': '13.0', 'prefix': 'libcrypto3-udeb', 'reference': '3.5.4-1~deb13u2'},
    {'release': '13.0', 'prefix': 'libssl-dev', 'reference': '3.5.4-1~deb13u2'},
    {'release': '13.0', 'prefix': 'libssl-doc', 'reference': '3.5.4-1~deb13u2'},
    {'release': '13.0', 'prefix': 'libssl3-udeb', 'reference': '3.5.4-1~deb13u2'},
    {'release': '13.0', 'prefix': 'libssl3t64', 'reference': '3.5.4-1~deb13u2'},
    {'release': '13.0', 'prefix': 'openssl', 'reference': '3.5.4-1~deb13u2'},
    {'release': '13.0', 'prefix': 'openssl-provider-fips', 'reference': '3.5.4-1~deb13u2'},
    {'release': '13.0', 'prefix': 'openssl-provider-legacy', 'reference': '3.5.4-1~deb13u2'}
];

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, 'libcrypto3-udeb / libssl-dev / libssl-doc / libssl3 / libssl3-udeb / etc');
}