7-Zip >= 9.18 < 26.01 SquashFS BlockToNode OOB Read (GHSL-2026-115_GHSL-2026-122)

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

include('compat.inc');

if (description)
{
  script_id(318789);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/06/09");

  script_cve_id("CVE-2026-48104");
  script_xref(name:"IAVA", value:"2026-A-0525");

  script_name(english:"7-Zip >= 9.18 < 26.01 SquashFS BlockToNode OOB Read (GHSL-2026-115_GHSL-2026-122)");

  script_set_attribute(attribute:"synopsis", value:
"The remote host has an application installed that is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The version of 7-Zip installed on the remote Windows host is >= 9.18 and prior to 26.01. It is, therefore, affected
by multiple vulnerabilities:

  - An out-of-bounds read exists in 7-Zip's SquashFS BlockToNode handling due to an uninitialized heap read,
    which can lead to a crash when processing a crafted SquashFS archive. (CVE-2026-48104)

  - A path traversal vulnerability exists in 7-Zip's extraction mode that can lead to arbitrary file write when
    extracting a crafted archive. (GHSL-2026-115)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  # https://securitylab.github.com/advisories/GHSL-2026-115_GHSL-2026-122_7-zip/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?6f6968b6");
  script_set_attribute(attribute:"solution", value:
"Upgrade to 7-Zip version 26.01 or later.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:M/Au:N/C:N/I:N/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:L");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-48104");

  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:"2026/05/22");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/05/22");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/06/05");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:7-zip:7-zip");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Windows");

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

  script_dependencies("7zip_installed.nbin");
  script_require_keys("installed_sw/7-Zip");

  exit(0);
}

include('vdf.inc');

# @tvdl-content
var vuln_data = {
  'metadata': {'spec_version': '1.0'},
  'requires': [
    {'scope': 'target', 'match': {'os': 'windows'}}
  ],
  'checks': [
    {
      'product': {'name': '7-Zip', 'type': 'app'},
      'check_algorithm': 'default',
      'constraints': [
        {'min_version': '9.18', 'fixed_version': '26.01'}
      ]
    }
  ]
};

var result = vdf::check_and_report(vuln_data:vuln_data, severity:SECURITY_NOTE);
vdf::handle_check_and_report_errors(vdf_result:result);