Python Library OpenEXR 3.4.0 < 3.4.14 DoS (CVE-2026-68516)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

include('compat.inc');

if (description)
{
  script_id(341183);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/08/31");

  script_cve_id("CVE-2026-68516");

  script_name(english:"Python Library OpenEXR 3.4.0 < 3.4.14 DoS (CVE-2026-68516)");

  script_set_attribute(attribute:"synopsis", value:
"A Python library installed on the remote host is affected by a denial of service vulnerability.");
  script_set_attribute(attribute:"description", value:
"The version of the OpenEXR Python package installed on the remote host is 3.4.x prior to 3.4.14. It is, therefore,
affected by a denial of service vulnerability:

  - A crafted HTJ2K-compressed EXR whose JPEG 2000 SIZ fields place the first tile outside the visible image can
    reach invalid tile and codeblock geometry in the vendored OpenJPH AVX2 decoder, causing a stack out-of-bounds
    write and denial of service. OpenEXR's HTJ2K path does not reject SIZ image-offset/tile-grid geometry where the
    first tile does not intersect the image. (CVE-2026-68516)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  # https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-fw66-6xph-56jm
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?b519c7d0");
  script_set_attribute(attribute:"solution", value:
"Upgrade to OpenEXR version 3.4.14 or later.");
  script_set_attribute(attribute:"agent", value:"all");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C");
  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:N/UI:R/S:U/C:N/I:N/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-2026-68516");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(787, 121);

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/08/07");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/08/07");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/08/28");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"asset_categories", value:"component");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:academysoftwarefoundation:openexr");
  script_set_attribute(attribute:"thorough_tests", value:"true");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Misc.");

  script_copyright(english:"This script is Copyright (C) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("python_packages_installed_nix.nbin", "python_packages_win_installed.nbin");
  script_require_ports("Host/nix/Python/Packages/Enumerated", "Host/win/Python/Packages/Enumerated");

  exit(0);
}

include('python.inc');

var pkg = 'OpenEXR';

var libs = python::get_package_info(pkg_name:pkg, cpe:"cpe:/a:academysoftwarefoundation:openexr");

if (empty_or_null(libs))
  audit(AUDIT_NOT_INST, pkg);

vcf::check_all_backporting(app_info:libs);

var constraints = [
  {'min_version': '3.4.0', 'fixed_version': '3.4.14'}
];

vcf::check_version_and_report(
  app_info:libs,
  constraints:constraints,
  severity:SECURITY_HOLE
);