Greenshot < 1.3.311 OS Command Injection (GHSA-7hvw-q8q5-gpmj)

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

include('compat.inc');

if (description)
{
  script_id(300181);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/03/03");

  script_cve_id("CVE-2026-22035");

  script_name(english:"Greenshot < 1.3.311 OS Command Injection (GHSA-7hvw-q8q5-gpmj)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Windows host has an application installed which is affected by a command injection vulnerability.");
  script_set_attribute(attribute:"description", value:
"The Greenshot installation on the remote Windows host is prior to 1.3.311. It is, therefore, affected by a
command injection vulnerability:

  - The FormatArguments method in ExternalCommandDestination.cs uses string.Format() to insert user-controlled
    filenames directly into shell commands without sanitization, allowing attackers to execute arbitrary commands
    by crafting malicious filenames containing shell metacharacters. (CVE-2026-22035)

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/greenshot/greenshot/security/advisories/GHSA-7hvw-q8q5-gpmj
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?46341c1c");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Greenshot version 1.3.311 or later.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:S/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:L/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-2026-22035");

  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:"2026/01/07");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/01/07");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/03/02");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:greenshot:greenshot");
  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("greenshot_win_installed.nbin");
  script_require_keys("installed_sw/Greenshot");

  exit(0);
}

include('vdf.inc');

# @tvdl-content
var vuln_data = {
  'metadata': {'spec_version': '1.0'},
  'requires': [
    {'scope': 'target', 'match': {'os': 'windows'}}
  ],
  'checks': [
    {
      'product': {'name': 'Greenshot', 'type': 'app'},
      'check_algorithm': 'default',
      'constraints': [
        {'fixed_version': '1.3.311'}
      ]
    }
  ]
};

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