Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS : TeX Live vulnerabilities (USN-7985-1)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-7985-1. The text
# itself is copyright (C) Canonical, Inc. See
# <https://ubuntu.com/security/notices>. Ubuntu(R) is a registered
# trademark of Canonical, Inc.
##

include('compat.inc');

if (description)
{
  script_id(297276);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/01/30");

  script_cve_id(
    "CVE-2022-24106",
    "CVE-2022-24107",
    "CVE-2023-32668",
    "CVE-2024-25262"
  );
  script_xref(name:"USN", value:"7985-1");

  script_name(english:"Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS : TeX Live vulnerabilities (USN-7985-1)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Ubuntu host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS host has packages installed that are affected by
multiple vulnerabilities as referenced in the USN-7985-1 advisory.

    Shin Ando discovered that the Xpdf toolkit embedded in TeX Live incorrectly handled memory when decoding
    certain data streams. An attacker could possibly use this issue to cause TeX Live to crash, resulting in a
    denial of service, or execute arbitrary code. This issue only affected Ubuntu 20.04 LTS and Ubuntu 22.04
    LTS. (CVE-2022-24106, CVE-2022-24107)

    It was discovered that TeX Live allowed documents to make arbitrary network requests. If a user or
    automated system were tricked into opening a specially crafted document, a remote attacker could possibly
    use this issue to exfiltrate sensitive information, or perform other network-related attacks. This issue
    only affected Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. (CVE-2023-32668)

    It was discovered that TeX Live incorrectly handled certain TrueType fonts. If a user or automated system
    were tricked into opening a specially crafted TrueType font, a remote attacker could use this issue to
    cause TeX Live to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue
    only affected Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. (CVE-2024-25262)

Tenable has extracted the preceding description block directly from the Ubuntu 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://ubuntu.com/security/notices/USN-7985-1");
  script_set_attribute(attribute:"solution", value:
"Update the affected 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:POC/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:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2022-24107");

  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:"2022/04/18");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/01/29");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/01/30");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:16.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:18.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:20.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:22.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libkpathsea-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libkpathsea6");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libptexenc-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libptexenc1");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libsynctex-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libsynctex1");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libsynctex2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libtexlua52");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libtexlua52-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libtexlua53");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libtexlua53-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libtexluajit-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libtexluajit2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:texlive-binaries");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

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

  script_copyright(english:"Ubuntu Security Notice (C) 2026 Canonical, Inc. / NASL script (C) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl", "ubuntu_pro_sub_detect.nasl");
  script_require_keys("Host/cpu", "Host/Ubuntu", "Host/Ubuntu/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);
var os_release = get_kb_item('Host/Ubuntu/release');
if ( isnull(os_release) ) audit(AUDIT_OS_NOT, 'Ubuntu');
os_release = chomp(os_release);
if (! ('16.04' >< os_release || '18.04' >< os_release || '20.04' >< os_release || '22.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 16.04 / 18.04 / 20.04 / 22.04', 'Ubuntu ' + os_release);
if ( ! get_kb_item('Host/Debian/dpkg-l') ) audit(AUDIT_PACKAGE_LIST_MISSING);

var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 's390' >!< cpu && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Ubuntu', cpu);
var ubuntu_pro_detected = get_kb_item('Host/Ubuntu/Pro/Services/esm-apps');
ubuntu_pro_detected = !empty_or_null(ubuntu_pro_detected);

var pro_caveat_needed = FALSE;

var pkgs = [
    {'osver': '16.04', 'pkgname': 'libkpathsea-dev', 'pkgver': '2015.20160222.37495-1ubuntu0.1+esm1', 'ubuntu_pro': TRUE, 'cves': ['CVE-2023-32668', 'CVE-2024-25262']},
    {'osver': '16.04', 'pkgname': 'libkpathsea6', 'pkgver': '2015.20160222.37495-1ubuntu0.1+esm1', 'ubuntu_pro': TRUE, 'cves': ['CVE-2023-32668', 'CVE-2024-25262']},
    {'osver': '16.04', 'pkgname': 'libptexenc-dev', 'pkgver': '2015.20160222.37495-1ubuntu0.1+esm1', 'ubuntu_pro': TRUE, 'cves': ['CVE-2023-32668', 'CVE-2024-25262']},
    {'osver': '16.04', 'pkgname': 'libptexenc1', 'pkgver': '2015.20160222.37495-1ubuntu0.1+esm1', 'ubuntu_pro': TRUE, 'cves': ['CVE-2023-32668', 'CVE-2024-25262']},
    {'osver': '16.04', 'pkgname': 'libsynctex-dev', 'pkgver': '2015.20160222.37495-1ubuntu0.1+esm1', 'ubuntu_pro': TRUE, 'cves': ['CVE-2023-32668', 'CVE-2024-25262']},
    {'osver': '16.04', 'pkgname': 'libsynctex1', 'pkgver': '2015.20160222.37495-1ubuntu0.1+esm1', 'ubuntu_pro': TRUE, 'cves': ['CVE-2023-32668', 'CVE-2024-25262']},
    {'osver': '16.04', 'pkgname': 'libtexlua52', 'pkgver': '2015.20160222.37495-1ubuntu0.1+esm1', 'ubuntu_pro': TRUE, 'cves': ['CVE-2023-32668', 'CVE-2024-25262']},
    {'osver': '16.04', 'pkgname': 'libtexlua52-dev', 'pkgver': '2015.20160222.37495-1ubuntu0.1+esm1', 'ubuntu_pro': TRUE, 'cves': ['CVE-2023-32668', 'CVE-2024-25262']},
    {'osver': '16.04', 'pkgname': 'libtexluajit-dev', 'pkgver': '2015.20160222.37495-1ubuntu0.1+esm1', 'ubuntu_pro': TRUE, 'cves': ['CVE-2023-32668', 'CVE-2024-25262']},
    {'osver': '16.04', 'pkgname': 'libtexluajit2', 'pkgver': '2015.20160222.37495-1ubuntu0.1+esm1', 'ubuntu_pro': TRUE, 'cves': ['CVE-2023-32668', 'CVE-2024-25262']},
    {'osver': '16.04', 'pkgname': 'texlive-binaries', 'pkgver': '2015.20160222.37495-1ubuntu0.1+esm1', 'ubuntu_pro': TRUE, 'cves': ['CVE-2023-32668', 'CVE-2024-25262']},
    {'osver': '18.04', 'pkgname': 'libkpathsea-dev', 'pkgver': '2017.20170613.44572-8ubuntu0.2+esm1', 'ubuntu_pro': TRUE, 'cves': ['CVE-2023-32668', 'CVE-2024-25262']},
    {'osver': '18.04', 'pkgname': 'libkpathsea6', 'pkgver': '2017.20170613.44572-8ubuntu0.2+esm1', 'ubuntu_pro': TRUE, 'cves': ['CVE-2023-32668', 'CVE-2024-25262']},
    {'osver': '18.04', 'pkgname': 'libptexenc-dev', 'pkgver': '2017.20170613.44572-8ubuntu0.2+esm1', 'ubuntu_pro': TRUE, 'cves': ['CVE-2023-32668', 'CVE-2024-25262']},
    {'osver': '18.04', 'pkgname': 'libptexenc1', 'pkgver': '2017.20170613.44572-8ubuntu0.2+esm1', 'ubuntu_pro': TRUE, 'cves': ['CVE-2023-32668', 'CVE-2024-25262']},
    {'osver': '18.04', 'pkgname': 'libsynctex-dev', 'pkgver': '2017.20170613.44572-8ubuntu0.2+esm1', 'ubuntu_pro': TRUE, 'cves': ['CVE-2023-32668', 'CVE-2024-25262']},
    {'osver': '18.04', 'pkgname': 'libsynctex1', 'pkgver': '2017.20170613.44572-8ubuntu0.2+esm1', 'ubuntu_pro': TRUE, 'cves': ['CVE-2023-32668', 'CVE-2024-25262']},
    {'osver': '18.04', 'pkgname': 'libtexlua52', 'pkgver': '2017.20170613.44572-8ubuntu0.2+esm1', 'ubuntu_pro': TRUE, 'cves': ['CVE-2023-32668', 'CVE-2024-25262']},
    {'osver': '18.04', 'pkgname': 'libtexlua52-dev', 'pkgver': '2017.20170613.44572-8ubuntu0.2+esm1', 'ubuntu_pro': TRUE, 'cves': ['CVE-2023-32668', 'CVE-2024-25262']},
    {'osver': '18.04', 'pkgname': 'libtexluajit-dev', 'pkgver': '2017.20170613.44572-8ubuntu0.2+esm1', 'ubuntu_pro': TRUE, 'cves': ['CVE-2023-32668', 'CVE-2024-25262']},
    {'osver': '18.04', 'pkgname': 'libtexluajit2', 'pkgver': '2017.20170613.44572-8ubuntu0.2+esm1', 'ubuntu_pro': TRUE, 'cves': ['CVE-2023-32668', 'CVE-2024-25262']},
    {'osver': '18.04', 'pkgname': 'texlive-binaries', 'pkgver': '2017.20170613.44572-8ubuntu0.2+esm1', 'ubuntu_pro': TRUE, 'cves': ['CVE-2023-32668', 'CVE-2024-25262']},
    {'osver': '20.04', 'pkgname': 'libkpathsea-dev', 'pkgver': '2019.20190605.51237-3ubuntu0.2+esm1', 'ubuntu_pro': TRUE, 'cves': ['CVE-2022-24106', 'CVE-2022-24107']},
    {'osver': '20.04', 'pkgname': 'libkpathsea6', 'pkgver': '2019.20190605.51237-3ubuntu0.2+esm1', 'ubuntu_pro': TRUE, 'cves': ['CVE-2022-24106', 'CVE-2022-24107']},
    {'osver': '20.04', 'pkgname': 'libptexenc-dev', 'pkgver': '2019.20190605.51237-3ubuntu0.2+esm1', 'ubuntu_pro': TRUE, 'cves': ['CVE-2022-24106', 'CVE-2022-24107']},
    {'osver': '20.04', 'pkgname': 'libptexenc1', 'pkgver': '2019.20190605.51237-3ubuntu0.2+esm1', 'ubuntu_pro': TRUE, 'cves': ['CVE-2022-24106', 'CVE-2022-24107']},
    {'osver': '20.04', 'pkgname': 'libsynctex-dev', 'pkgver': '2019.20190605.51237-3ubuntu0.2+esm1', 'ubuntu_pro': TRUE, 'cves': ['CVE-2022-24106', 'CVE-2022-24107']},
    {'osver': '20.04', 'pkgname': 'libsynctex2', 'pkgver': '2019.20190605.51237-3ubuntu0.2+esm1', 'ubuntu_pro': TRUE, 'cves': ['CVE-2022-24106', 'CVE-2022-24107']},
    {'osver': '20.04', 'pkgname': 'libtexlua53', 'pkgver': '2019.20190605.51237-3ubuntu0.2+esm1', 'ubuntu_pro': TRUE, 'cves': ['CVE-2022-24106', 'CVE-2022-24107']},
    {'osver': '20.04', 'pkgname': 'libtexlua53-dev', 'pkgver': '2019.20190605.51237-3ubuntu0.2+esm1', 'ubuntu_pro': TRUE, 'cves': ['CVE-2022-24106', 'CVE-2022-24107']},
    {'osver': '20.04', 'pkgname': 'libtexluajit-dev', 'pkgver': '2019.20190605.51237-3ubuntu0.2+esm1', 'ubuntu_pro': TRUE, 'cves': ['CVE-2022-24106', 'CVE-2022-24107']},
    {'osver': '20.04', 'pkgname': 'libtexluajit2', 'pkgver': '2019.20190605.51237-3ubuntu0.2+esm1', 'ubuntu_pro': TRUE, 'cves': ['CVE-2022-24106', 'CVE-2022-24107']},
    {'osver': '20.04', 'pkgname': 'texlive-binaries', 'pkgver': '2019.20190605.51237-3ubuntu0.2+esm1', 'ubuntu_pro': TRUE, 'cves': ['CVE-2022-24106', 'CVE-2022-24107']},
    {'osver': '22.04', 'pkgname': 'libkpathsea-dev', 'pkgver': '2021.20210626.59705-1ubuntu0.3', 'ubuntu_pro': FALSE, 'cves': ['CVE-2022-24106', 'CVE-2022-24107']},
    {'osver': '22.04', 'pkgname': 'libkpathsea6', 'pkgver': '2021.20210626.59705-1ubuntu0.3', 'ubuntu_pro': FALSE, 'cves': ['CVE-2022-24106', 'CVE-2022-24107']},
    {'osver': '22.04', 'pkgname': 'libptexenc-dev', 'pkgver': '2021.20210626.59705-1ubuntu0.3', 'ubuntu_pro': FALSE, 'cves': ['CVE-2022-24106', 'CVE-2022-24107']},
    {'osver': '22.04', 'pkgname': 'libptexenc1', 'pkgver': '2021.20210626.59705-1ubuntu0.3', 'ubuntu_pro': FALSE, 'cves': ['CVE-2022-24106', 'CVE-2022-24107']},
    {'osver': '22.04', 'pkgname': 'libsynctex-dev', 'pkgver': '2021.20210626.59705-1ubuntu0.3', 'ubuntu_pro': FALSE, 'cves': ['CVE-2022-24106', 'CVE-2022-24107']},
    {'osver': '22.04', 'pkgname': 'libsynctex2', 'pkgver': '2021.20210626.59705-1ubuntu0.3', 'ubuntu_pro': FALSE, 'cves': ['CVE-2022-24106', 'CVE-2022-24107']},
    {'osver': '22.04', 'pkgname': 'libtexlua53', 'pkgver': '2021.20210626.59705-1ubuntu0.3', 'ubuntu_pro': FALSE, 'cves': ['CVE-2022-24106', 'CVE-2022-24107']},
    {'osver': '22.04', 'pkgname': 'libtexlua53-dev', 'pkgver': '2021.20210626.59705-1ubuntu0.3', 'ubuntu_pro': FALSE, 'cves': ['CVE-2022-24106', 'CVE-2022-24107']},
    {'osver': '22.04', 'pkgname': 'libtexluajit-dev', 'pkgver': '2021.20210626.59705-1ubuntu0.3', 'ubuntu_pro': FALSE, 'cves': ['CVE-2022-24106', 'CVE-2022-24107']},
    {'osver': '22.04', 'pkgname': 'libtexluajit2', 'pkgver': '2021.20210626.59705-1ubuntu0.3', 'ubuntu_pro': FALSE, 'cves': ['CVE-2022-24106', 'CVE-2022-24107']},
    {'osver': '22.04', 'pkgname': 'texlive-binaries', 'pkgver': '2021.20210626.59705-1ubuntu0.3', 'ubuntu_pro': FALSE, 'cves': ['CVE-2022-24106', 'CVE-2022-24107']}
];

var flag = 0;
foreach var package_array ( pkgs ) {
  var osver = NULL;
  var pkgname = NULL;
  var pkgver = NULL;
  if (!empty_or_null(package_array['osver'])) osver = package_array['osver'];
  if (!empty_or_null(package_array['pkgname'])) pkgname = package_array['pkgname'];
  if (!empty_or_null(package_array['pkgver'])) pkgver = package_array['pkgver'];
  if (!empty_or_null(package_array['cves'])) cves = package_array['cves'];
  var pro_required = NULL;
  if (!empty_or_null(package_array['ubuntu_pro'])) pro_required = package_array['ubuntu_pro'];
  if (osver && pkgname && pkgver) {
    if (deb_check(release:osver, prefix:pkgname, reference:pkgver, cves:cves)) {
        flag++;
        if (!ubuntu_pro_detected && !pro_caveat_needed) pro_caveat_needed = pro_required;
    }
  }
}

if (flag)
{
  var extra = '';
  if (pro_caveat_needed) {
    extra += 'NOTE: This vulnerability check contains fixes that apply to packages only \n';
    extra += 'available in Ubuntu ESM repositories. Access to these package security updates \n';
    extra += 'require an Ubuntu Pro subscription.\n\n';
  }
  extra += ubuntu_report_get();
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : extra
  );
  exit(0);
}
else
{
  var tested = ubuntu_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'libkpathsea-dev / libkpathsea6 / libptexenc-dev / libptexenc1 / etc');
}