Debian dla-3965 : ghostscript - 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-3965. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(211778);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/03/28");

  script_cve_id(
    "CVE-2024-46951",
    "CVE-2024-46953",
    "CVE-2024-46955",
    "CVE-2024-46956"
  );
  script_xref(name:"IAVB", value:"2024-B-0170-S");

  script_name(english:"Debian dla-3965 : ghostscript - 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-3965 advisory.

    - -------------------------------------------------------------------------
    Debian LTS Advisory DLA-3965-1                [email protected]
    https://www.debian.org/lts/security/                          Adrian Bunk
    November 24, 2024                             https://wiki.debian.org/LTS
    - -------------------------------------------------------------------------

    Package        : ghostscript
    Version        : 9.53.3~dfsg-7+deb11u9
    CVE ID         : CVE-2024-46951 CVE-2024-46953 CVE-2024-46955 CVE-2024-46956

    Multiple vulnerabilities have been fixed in the PostScript/PDF
    interpreter Ghostscript.

    CVE-2024-46951

        PS interpreter unchecked pointer

    CVE-2024-46953

        output filename format string integer overflow

    CVE-2024-46955

        PS interpreter out-of-bounds

    CVE-2024-46956

        PS interpreter out-of-bounds

    For Debian 11 bullseye, these problems have been fixed in version
    9.53.3~dfsg-7+deb11u9.

    We recommend that you upgrade your ghostscript packages.

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

    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

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/ghostscript");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2024-46951");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2024-46953");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2024-46955");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2024-46956");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/bullseye/ghostscript");
  script_set_attribute(attribute:"solution", value:
"Upgrade the ghostscript packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/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:L/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-2024-46956");

  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:"2024/11/10");
  script_set_attribute(attribute:"patch_publication_date", value:"2024/11/24");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/11/24");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:ghostscript");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:ghostscript-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:ghostscript-x");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libgs-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libgs9");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libgs9-common");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:11.0");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Debian Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2024-2025 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': 'ghostscript', 'reference': '9.53.3~dfsg-7+deb11u9'},
    {'release': '11.0', 'prefix': 'ghostscript-doc', 'reference': '9.53.3~dfsg-7+deb11u9'},
    {'release': '11.0', 'prefix': 'ghostscript-x', 'reference': '9.53.3~dfsg-7+deb11u9'},
    {'release': '11.0', 'prefix': 'libgs-dev', 'reference': '9.53.3~dfsg-7+deb11u9'},
    {'release': '11.0', 'prefix': 'libgs9', 'reference': '9.53.3~dfsg-7+deb11u9'},
    {'release': '11.0', 'prefix': 'libgs9-common', 'reference': '9.53.3~dfsg-7+deb11u9'}
];

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, 'ghostscript / ghostscript-doc / ghostscript-x / libgs-dev / libgs9 / etc');
}