Cisco Unified Communications Manager (CUCM) 14.x < 14SU6 / 15.x < 15SU5 SSRF (cisco-sa-cucm-ssrf-cXPnHcW)

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

include('compat.inc');

if (description)
{
  script_id(318849);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/06/25");

  script_cve_id("CVE-2026-20230");
  script_xref(name:"CISCO-BUG-ID", value:"CSCws67331");
  script_xref(name:"CISCO-SA", value:"cisco-sa-cucm-ssrf-cXPnHcW");
  script_xref(name:"IAVA", value:"2026-A-0544");
  script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2026/06/28");

  script_name(english:"Cisco Unified Communications Manager (CUCM) 14.x < 14SU6 / 15.x < 15SU5 SSRF (cisco-sa-cucm-ssrf-cXPnHcW)");

  script_set_attribute(attribute:"synopsis", value:
"The remote device is missing a vendor-supplied security patch.");
  script_set_attribute(attribute:"description", value:
"According to its self-reported version, Cisco Unified Communications Manager is affected by a server-side request
forgery (SSRF) vulnerability.

  - A vulnerability in Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications
    Manager Session Management Edition (Unified CM SME) could allow an unauthenticated, remote attacker to
    conduct server-side request forgery (SSRF) attacks through an affected device. This vulnerability is due
    to improper input validation for specific HTTP requests. An attacker could exploit this vulnerability by
    sending a crafted HTTP request to an affected device. A successful exploit could allow the attacker to
    write files to the underlying operating system that could be used later to elevate to root.
    (CVE-2026-20230)

Note: To exploit this vulnerability, the WebDialer service must be enabled. WebDialer is disabled by default.

Please see the included Cisco BID and Cisco Security Advisory for more information.");
  # https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cucm-ssrf-cXPnHcW
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?9c428457");
  script_set_attribute(attribute:"see_also", value:"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCws67331");
  script_set_attribute(attribute:"solution", value:
"Upgrade to the relevant fixed version referenced in Cisco bug ID CSCws67331.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:C/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-20230");

  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:"2026/06/03");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/06/03");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/06/05");

  script_set_attribute(attribute:"potential_vulnerability", value:"true");
  script_set_attribute(attribute:"plugin_type", value:"combined");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:cisco:unified_communications_manager");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

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

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

  script_dependencies("cisco_ucm_detect.nbin");
  script_require_keys("Settings/ParanoidReport", "Host/Cisco/CUCM/Version");

  exit(0);
}

include('ccf.inc');

if (report_paranoia < 2) audit(AUDIT_PARANOID);

var product_info = cisco::get_product_info(name:'Cisco Unified Communications Manager');

var version_active = get_kb_item('Host/Cisco/show_version_active');
if ('CSCws67331' >< version_active)
  audit(AUDIT_HOST_NOT, 'affected due to presence of hotfix');

var vuln_ranges = [
  # 14SU6 - fix for release 14
  {'min_ver': '14.0', 'fix_ver': '14.0.1.16900'},
  # 15SU5 - fix for release 15 (or COP1)
  {'min_ver': '15.0', 'fix_ver': '15.0.1.15900'}
];

var reporting = make_array(
  'port'          , 0,
  'severity'      , SECURITY_HOLE,
  'version'       , product_info['version'],
  'bug_id'        , 'CSCws67331',
  'fix'           , 'See vendor advisory',
  'disable_caveat', TRUE
);

cisco::check_and_report(product_info:product_info, reporting:reporting, vuln_ranges:vuln_ranges);