Debian dla-4363 : 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-4363. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(272232);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/11/03");

  script_cve_id("CVE-2020-36855", "CVE-2022-4981", "CVE-2025-9732");

  script_name(english:"Debian dla-4363 : 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-4363 advisory.

    -------------------------------------------------------------------------
    Debian LTS Advisory DLA-4363-1                [email protected]
    https://www.debian.org/lts/security/                      Markus Koschany
    November 03, 2025                             https://wiki.debian.org/LTS
    -------------------------------------------------------------------------

    Package        : dcmtk
    Version        : 3.6.5-1+deb11u5
    CVE ID         : CVE-2020-36855 CVE-2022-4981 CVE-2025-9732
    Debian Bug     : 1113993

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

    CVE-2025-9732

        Processing of an invalid DICOM image with a Photometric
        Interpretation of YBR_FULL and a Planar Configuration of 1 where
        the number of pixels stored does not match the expected number of pixels.
        This may lead to memory corruption.

    CVE-2022-4981

        Various issues in the dcmqrscp configuration file parser that could cause
        application crashes when reading a malformed configuration file, due to
        insufficient checks of the input data.

    CVE-2020-36855

        Stack-based overflow in the dcmqrscp config parser.


    For Debian 11 bullseye, these problems have been fixed in version
    3.6.5-1+deb11u5.

    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-2020-36855");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2022-4981");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2025-9732");
  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:L/AC:L/Au:S/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss4_vector", value:"CVSS:4.0/AV:L/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:P");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2025-9732");

  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:"2025/08/31");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/11/03");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/11/03");

  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) 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': 'dcmtk', 'reference': '3.6.5-1+deb11u5'},
    {'release': '11.0', 'prefix': 'dcmtk-doc', 'reference': '3.6.5-1+deb11u5'},
    {'release': '11.0', 'prefix': 'libdcmtk-dev', 'reference': '3.6.5-1+deb11u5'},
    {'release': '11.0', 'prefix': 'libdcmtk15', 'reference': '3.6.5-1+deb11u5'}
];

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');
}