Libheif < 1.22.1 OOB Read (macOS)

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

include('compat.inc');

if (description)
{
  script_id(321518);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/06/20");

  script_cve_id("CVE-2026-49271");

  script_name(english:"Libheif < 1.22.1 OOB Read (macOS)");

  script_set_attribute(attribute:"synopsis", value:
"Libheif running on the remote host is affected by an out-of-bounds read vulnerability.");
  script_set_attribute(attribute:"description", value:
"According to its self-reported version, libheif prior to 1.22.1 is affected by an out-of-bounds read vulnerability. The
uncompressed HEIF decoder validates explicit icef compressed-unit offsets using unit_offset + unit_size. Because the
addition can wrap, a crafted HEIF file can pass the range check and then construct a vector from iterators outside the
compressed item buffer, producing an out-of-bounds heap read and crash.

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/strukturag/libheif/security/advisories/GHSA-r7qj-cg5r-r6vf
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?b101751d");
  script_set_attribute(attribute:"solution", value:
"Upgrade to libheif version 1.22.1 or later.");
  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-2026-49271");

  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:"2026/05/25");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/05/25");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/06/18");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:struktur:libheif");
  script_end_attributes();

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

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

  script_dependencies("libheif_macos_installed.nbin");
  script_require_keys("Host/local_checks_enabled", "Host/MacOSX/Version", "installed_sw/libheif");

  exit(0);
}

include('vcf.inc');

vcf::add_separator('_');
var app_info = vcf::get_app_info(app:'libheif');

var constraints = [
  { 'fixed_version' : '1.22.1' }
];

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