Debian dla-4443 : dcmtk - 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-4443. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(293761);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/01/20");

  script_cve_id("CVE-2025-14607", "CVE-2025-14841");

  script_name(english:"Debian dla-4443 : dcmtk - 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 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the
dla-4443 advisory.

    -------------------------------------------------------------------------
    Debian LTS Advisory DLA-4443-1                [email protected]
    https://www.debian.org/lts/security/                      Markus Koschany
    January 19, 2026                              https://wiki.debian.org/LTS
    -------------------------------------------------------------------------

    Package        : dcmtk
    Version        : 3.6.5-1+deb11u6
    CVE ID         : CVE-2025-14607 CVE-2025-14841
    Debian Bug     : 1122926 1123584

    Two vulnerabilities have been addressed in DCMTK, a collection of
    libraries and applications implementing large parts of the DICOM standard
    for medical images.

    CVE-2025-14607

        Possible memory corruption caused by illegal attributes in datasets which
        are processed by DcmByteString functions.

    CVE-2025-14841

        Invalid messages sent to dcmqrscp, the Image Central Test Node, may
        trigger a segmentation fault due to a NULL pointer being de-referenced.

    For Debian 11 bullseye, these problems have been fixed in version
    3.6.5-1+deb11u6.

    We recommend that you upgrade your dcmtk packages.

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

    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: This is a digitally signed message part

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/dcmtk");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2025-14607");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2025-14841");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/bullseye/dcmtk");
  script_set_attribute(attribute:"solution", value:
"Upgrade the dcmtk packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:P");
  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:L/UI:N/S:U/C:L/I:L/A:L");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss4_vector", value:"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N");
  script_set_attribute(attribute:"cvss4_threat_vector", value:"CVSS:4.0/E:U");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2025-14607");

  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:"2025/12/13");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/01/19");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/01/20");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:dcmtk");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:dcmtk-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libdcmtk-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libdcmtk15");
  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) 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:"^(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': 'dcmtk', 'reference': '3.6.5-1+deb11u6'},
    {'release': '11.0', 'prefix': 'dcmtk-doc', 'reference': '3.6.5-1+deb11u6'},
    {'release': '11.0', 'prefix': 'libdcmtk-dev', 'reference': '3.6.5-1+deb11u6'},
    {'release': '11.0', 'prefix': 'libdcmtk15', 'reference': '3.6.5-1+deb11u6'}
];

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_WARNING,
    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, 'dcmtk / dcmtk-doc / libdcmtk-dev / libdcmtk15');
}