Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 25.04 : LibTIFF vulnerabilities (USN-7707-1)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-7707-1. 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(253529);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/08/22");

  script_cve_id(
    "CVE-2025-8176",
    "CVE-2025-8177",
    "CVE-2025-8534",
    "CVE-2025-8851"
  );
  script_xref(name:"USN", value:"7707-1");

  script_name(english:"Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 25.04 : LibTIFF vulnerabilities (USN-7707-1)");

  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 14.04 LTS / 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 25.04 host has packages
installed that are affected by multiple vulnerabilities as referenced in the USN-7707-1 advisory.

    It was discovered that LibTIFF incorrectly handled certain memory operations when using tiffmedian tool.
    An attacker could trick a user into processing a specially crafted tiff image file and potentially use
    this issue to cause a denial of service. (CVE-2025-8176)

    It was discovered that LibTIFF did not properly perform bounds checking in certain operations when using
    thumbnail tool. An attacker could trick a user into processing a specially crafted tiff image file and
    potentially use this issue to cause a denial of service. This issue only affected Ubuntu 14.04 LTS and
    Ubuntu 16.04 LTS. (CVE-2025-8177)

    It was discovered that LibTIFF incorrectly handled certain memory

    operations when using tiff2ps tool. An attacker could trick a user into processing a specially crafted
    tiff image file and potentially use this issue to cause a denial of service. (CVE-2025-8534)

    It was discovered that LibTIFF did not properly perform bounds checking

    in certain operations when using tiffcrop tool. An attacker could trick

    a user into processing a specially crafted tiff image file and

    potentially use this issue to cause a denial of service. (CVE-2025-8851)

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-7707-1");
  script_set_attribute(attribute:"solution", value:
"Update the affected 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:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/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: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:U");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2025-8851");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2025-8176");

  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:"2025/07/26");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/08/20");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/08/22");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:14.04:-:lts");
  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:"cpe:/o:canonical:ubuntu_linux:24.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:25.04");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libtiff-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libtiff-opengl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libtiff-tools");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libtiff4-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libtiff5");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libtiff5-alt-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libtiff5-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libtiff6");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libtiffxx5");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libtiffxx6");
  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) 2025 Canonical, Inc. / NASL script (C) 2025 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 (! ('14.04' >< os_release || '16.04' >< os_release || '18.04' >< os_release || '20.04' >< os_release || '22.04' >< os_release || '24.04' >< os_release || '25.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 14.04 / 16.04 / 18.04 / 20.04 / 22.04 / 24.04 / 25.04', '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': '14.04', 'pkgname': 'libtiff-opengl', 'pkgver': '4.0.3-7ubuntu0.11+esm15', 'ubuntu_pro': TRUE, 'cves': ['CVE-2025-8176', 'CVE-2025-8177', 'CVE-2025-8534', 'CVE-2025-8851']},
    {'osver': '14.04', 'pkgname': 'libtiff-tools', 'pkgver': '4.0.3-7ubuntu0.11+esm15', 'ubuntu_pro': TRUE, 'cves': ['CVE-2025-8176', 'CVE-2025-8177', 'CVE-2025-8534', 'CVE-2025-8851']},
    {'osver': '14.04', 'pkgname': 'libtiff4-dev', 'pkgver': '4.0.3-7ubuntu0.11+esm15', 'ubuntu_pro': TRUE, 'cves': ['CVE-2025-8176', 'CVE-2025-8177', 'CVE-2025-8534', 'CVE-2025-8851']},
    {'osver': '14.04', 'pkgname': 'libtiff5', 'pkgver': '4.0.3-7ubuntu0.11+esm15', 'ubuntu_pro': TRUE, 'cves': ['CVE-2025-8176', 'CVE-2025-8177', 'CVE-2025-8534', 'CVE-2025-8851']},
    {'osver': '14.04', 'pkgname': 'libtiff5-alt-dev', 'pkgver': '4.0.3-7ubuntu0.11+esm15', 'ubuntu_pro': TRUE, 'cves': ['CVE-2025-8176', 'CVE-2025-8177', 'CVE-2025-8534', 'CVE-2025-8851']},
    {'osver': '14.04', 'pkgname': 'libtiff5-dev', 'pkgver': '4.0.3-7ubuntu0.11+esm15', 'ubuntu_pro': TRUE, 'cves': ['CVE-2025-8176', 'CVE-2025-8177', 'CVE-2025-8534', 'CVE-2025-8851']},
    {'osver': '14.04', 'pkgname': 'libtiffxx5', 'pkgver': '4.0.3-7ubuntu0.11+esm15', 'ubuntu_pro': TRUE, 'cves': ['CVE-2025-8176', 'CVE-2025-8177', 'CVE-2025-8534', 'CVE-2025-8851']},
    {'osver': '16.04', 'pkgname': 'libtiff-opengl', 'pkgver': '4.0.6-1ubuntu0.8+esm18', 'ubuntu_pro': TRUE, 'cves': ['CVE-2025-8176', 'CVE-2025-8177', 'CVE-2025-8534', 'CVE-2025-8851']},
    {'osver': '16.04', 'pkgname': 'libtiff-tools', 'pkgver': '4.0.6-1ubuntu0.8+esm18', 'ubuntu_pro': TRUE, 'cves': ['CVE-2025-8176', 'CVE-2025-8177', 'CVE-2025-8534', 'CVE-2025-8851']},
    {'osver': '16.04', 'pkgname': 'libtiff5', 'pkgver': '4.0.6-1ubuntu0.8+esm18', 'ubuntu_pro': TRUE, 'cves': ['CVE-2025-8176', 'CVE-2025-8177', 'CVE-2025-8534', 'CVE-2025-8851']},
    {'osver': '16.04', 'pkgname': 'libtiff5-dev', 'pkgver': '4.0.6-1ubuntu0.8+esm18', 'ubuntu_pro': TRUE, 'cves': ['CVE-2025-8176', 'CVE-2025-8177', 'CVE-2025-8534', 'CVE-2025-8851']},
    {'osver': '16.04', 'pkgname': 'libtiffxx5', 'pkgver': '4.0.6-1ubuntu0.8+esm18', 'ubuntu_pro': TRUE, 'cves': ['CVE-2025-8176', 'CVE-2025-8177', 'CVE-2025-8534', 'CVE-2025-8851']},
    {'osver': '18.04', 'pkgname': 'libtiff-dev', 'pkgver': '4.0.9-5ubuntu0.10+esm8', 'ubuntu_pro': TRUE, 'cves': ['CVE-2025-8176', 'CVE-2025-8534', 'CVE-2025-8851']},
    {'osver': '18.04', 'pkgname': 'libtiff-opengl', 'pkgver': '4.0.9-5ubuntu0.10+esm8', 'ubuntu_pro': TRUE, 'cves': ['CVE-2025-8176', 'CVE-2025-8534', 'CVE-2025-8851']},
    {'osver': '18.04', 'pkgname': 'libtiff-tools', 'pkgver': '4.0.9-5ubuntu0.10+esm8', 'ubuntu_pro': TRUE, 'cves': ['CVE-2025-8176', 'CVE-2025-8534', 'CVE-2025-8851']},
    {'osver': '18.04', 'pkgname': 'libtiff5', 'pkgver': '4.0.9-5ubuntu0.10+esm8', 'ubuntu_pro': TRUE, 'cves': ['CVE-2025-8176', 'CVE-2025-8534', 'CVE-2025-8851']},
    {'osver': '18.04', 'pkgname': 'libtiff5-dev', 'pkgver': '4.0.9-5ubuntu0.10+esm8', 'ubuntu_pro': TRUE, 'cves': ['CVE-2025-8176', 'CVE-2025-8534', 'CVE-2025-8851']},
    {'osver': '18.04', 'pkgname': 'libtiffxx5', 'pkgver': '4.0.9-5ubuntu0.10+esm8', 'ubuntu_pro': TRUE, 'cves': ['CVE-2025-8176', 'CVE-2025-8534', 'CVE-2025-8851']},
    {'osver': '20.04', 'pkgname': 'libtiff-dev', 'pkgver': '4.1.0+git191117-2ubuntu0.20.04.14+esm1', 'ubuntu_pro': TRUE, 'cves': ['CVE-2025-8176', 'CVE-2025-8534', 'CVE-2025-8851']},
    {'osver': '20.04', 'pkgname': 'libtiff-opengl', 'pkgver': '4.1.0+git191117-2ubuntu0.20.04.14+esm1', 'ubuntu_pro': TRUE, 'cves': ['CVE-2025-8176', 'CVE-2025-8534', 'CVE-2025-8851']},
    {'osver': '20.04', 'pkgname': 'libtiff-tools', 'pkgver': '4.1.0+git191117-2ubuntu0.20.04.14+esm1', 'ubuntu_pro': TRUE, 'cves': ['CVE-2025-8176', 'CVE-2025-8534', 'CVE-2025-8851']},
    {'osver': '20.04', 'pkgname': 'libtiff5', 'pkgver': '4.1.0+git191117-2ubuntu0.20.04.14+esm1', 'ubuntu_pro': TRUE, 'cves': ['CVE-2025-8176', 'CVE-2025-8534', 'CVE-2025-8851']},
    {'osver': '20.04', 'pkgname': 'libtiff5-dev', 'pkgver': '4.1.0+git191117-2ubuntu0.20.04.14+esm1', 'ubuntu_pro': TRUE, 'cves': ['CVE-2025-8176', 'CVE-2025-8534', 'CVE-2025-8851']},
    {'osver': '20.04', 'pkgname': 'libtiffxx5', 'pkgver': '4.1.0+git191117-2ubuntu0.20.04.14+esm1', 'ubuntu_pro': TRUE, 'cves': ['CVE-2025-8176', 'CVE-2025-8534', 'CVE-2025-8851']},
    {'osver': '22.04', 'pkgname': 'libtiff-dev', 'pkgver': '4.3.0-6ubuntu0.11', 'ubuntu_pro': FALSE, 'cves': ['CVE-2025-8176', 'CVE-2025-8534', 'CVE-2025-8851']},
    {'osver': '22.04', 'pkgname': 'libtiff-opengl', 'pkgver': '4.3.0-6ubuntu0.11', 'ubuntu_pro': FALSE, 'cves': ['CVE-2025-8176', 'CVE-2025-8534', 'CVE-2025-8851']},
    {'osver': '22.04', 'pkgname': 'libtiff-tools', 'pkgver': '4.3.0-6ubuntu0.11', 'ubuntu_pro': FALSE, 'cves': ['CVE-2025-8176', 'CVE-2025-8534', 'CVE-2025-8851']},
    {'osver': '22.04', 'pkgname': 'libtiff5', 'pkgver': '4.3.0-6ubuntu0.11', 'ubuntu_pro': FALSE, 'cves': ['CVE-2025-8176', 'CVE-2025-8534', 'CVE-2025-8851']},
    {'osver': '22.04', 'pkgname': 'libtiff5-dev', 'pkgver': '4.3.0-6ubuntu0.11', 'ubuntu_pro': FALSE, 'cves': ['CVE-2025-8176', 'CVE-2025-8534', 'CVE-2025-8851']},
    {'osver': '22.04', 'pkgname': 'libtiffxx5', 'pkgver': '4.3.0-6ubuntu0.11', 'ubuntu_pro': FALSE, 'cves': ['CVE-2025-8176', 'CVE-2025-8534', 'CVE-2025-8851']},
    {'osver': '24.04', 'pkgname': 'libtiff-dev', 'pkgver': '4.5.1+git230720-4ubuntu2.3', 'ubuntu_pro': FALSE, 'cves': ['CVE-2025-8176', 'CVE-2025-8534', 'CVE-2025-8851']},
    {'osver': '24.04', 'pkgname': 'libtiff-opengl', 'pkgver': '4.5.1+git230720-4ubuntu2.3', 'ubuntu_pro': FALSE, 'cves': ['CVE-2025-8176', 'CVE-2025-8534', 'CVE-2025-8851']},
    {'osver': '24.04', 'pkgname': 'libtiff-tools', 'pkgver': '4.5.1+git230720-4ubuntu2.3', 'ubuntu_pro': FALSE, 'cves': ['CVE-2025-8176', 'CVE-2025-8534', 'CVE-2025-8851']},
    {'osver': '24.04', 'pkgname': 'libtiff5-dev', 'pkgver': '4.5.1+git230720-4ubuntu2.3', 'ubuntu_pro': FALSE, 'cves': ['CVE-2025-8176', 'CVE-2025-8534', 'CVE-2025-8851']},
    {'osver': '24.04', 'pkgname': 'libtiff6', 'pkgver': '4.5.1+git230720-4ubuntu2.3', 'ubuntu_pro': FALSE, 'cves': ['CVE-2025-8176', 'CVE-2025-8534', 'CVE-2025-8851']},
    {'osver': '24.04', 'pkgname': 'libtiffxx6', 'pkgver': '4.5.1+git230720-4ubuntu2.3', 'ubuntu_pro': FALSE, 'cves': ['CVE-2025-8176', 'CVE-2025-8534', 'CVE-2025-8851']},
    {'osver': '25.04', 'pkgname': 'libtiff-dev', 'pkgver': '4.5.1+git230720-4ubuntu4.1', 'ubuntu_pro': FALSE, 'cves': ['CVE-2025-8176', 'CVE-2025-8534', 'CVE-2025-8851']},
    {'osver': '25.04', 'pkgname': 'libtiff-opengl', 'pkgver': '4.5.1+git230720-4ubuntu4.1', 'ubuntu_pro': FALSE, 'cves': ['CVE-2025-8176', 'CVE-2025-8534', 'CVE-2025-8851']},
    {'osver': '25.04', 'pkgname': 'libtiff-tools', 'pkgver': '4.5.1+git230720-4ubuntu4.1', 'ubuntu_pro': FALSE, 'cves': ['CVE-2025-8176', 'CVE-2025-8534', 'CVE-2025-8851']},
    {'osver': '25.04', 'pkgname': 'libtiff5-dev', 'pkgver': '4.5.1+git230720-4ubuntu4.1', 'ubuntu_pro': FALSE, 'cves': ['CVE-2025-8176', 'CVE-2025-8534', 'CVE-2025-8851']},
    {'osver': '25.04', 'pkgname': 'libtiff6', 'pkgver': '4.5.1+git230720-4ubuntu4.1', 'ubuntu_pro': FALSE, 'cves': ['CVE-2025-8176', 'CVE-2025-8534', 'CVE-2025-8851']},
    {'osver': '25.04', 'pkgname': 'libtiffxx6', 'pkgver': '4.5.1+git230720-4ubuntu4.1', 'ubuntu_pro': FALSE, 'cves': ['CVE-2025-8176', 'CVE-2025-8534', 'CVE-2025-8851']}
];

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_WARNING,
    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, 'libtiff-dev / libtiff-opengl / libtiff-tools / libtiff4-dev / etc');
}