PaperCut NG < 25.0.13 / 26.x < 26.0.5 Multiple Vulnerabilities

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

include('compat.inc');

if (description)
{
  script_id(362591);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/10/02");

  script_cve_id("CVE-2026-82077", "CVE-2026-87739");
  script_xref(name:"IAVA", value:"2026-A-1073");

  script_name(english:"PaperCut NG < 25.0.13 / 26.x < 26.0.5 Multiple Vulnerabilities");

  script_set_attribute(attribute:"synopsis", value:
"PaperCut NG installed on the remote Windows host is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The version of PaperCut NG installed on the remote Windows host is prior to 25.0.13, or 26.x prior to 26.0.5. It is,
therefore, affected by the following vulnerabilities:

  - An improper limitation of a pathname to a restricted directory (path traversal) vulnerability in the
    Scan-to-Fax component of PaperCut NG and PaperCut MF allows an authenticated administrator to execute
    arbitrary commands on the underlying host via crafted fax provider settings. (CVE-2026-82077)

  - An improper authentication vulnerability in PaperCut MF/NG allows an unauthenticated, remote attacker to
    trigger report generation. By submitting report generation requests without valid credentials, an attacker
    can generate reports and gain unauthorized access to sensitive information. (CVE-2026-87739)

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://www.papercut.com/kb/Main/security-bulletin-sep-2026/");
  script_set_attribute(attribute:"solution", value:
"Upgrade to PaperCut NG version 25.0.13, 26.0.5, or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N");
  script_set_attribute(attribute:"cvss4_vector", value:"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-82077");

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/09/24");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/09/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/10/02");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:papercut:papercut_ng");
  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("papercut_ng_win_installed.nbin");
  script_require_keys("installed_sw/PaperCut NG", "SMB/Registry/Enumerated");

  exit(0);
}

include('vdf.inc');

# @tvdl-content
var vuln_data = {
  'metadata': {'spec_version': '1.0'},
  'requires': [
    {'scope': 'target', 'match': {'os': 'windows'}}
  ],
  'checks': [
    {
      'product': {'name': 'PaperCut NG', 'type': 'app'},
      'check_algorithm': 'default',
      'constraints': [
        {'fixed_version': '25.0.13'},
        {'min_version': '26', 'fixed_version': '26.0.5'}
      ]
    }
  ]
};

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