IBM HTTP Server 8.5.x / 9.x Web Server Plug-in RCE (7274072)

#%NASL_MIN_LEVEL 70300
##
# (C) Tenable Network Security, Inc.
##

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(337071);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/08/18");

  script_cve_id("CVE-2026-8620", "CVE-2026-8633");

  script_name(english:"IBM HTTP Server 8.5.x / 9.x Web Server Plug-in RCE (7274072)");

  script_set_attribute(attribute:"synopsis", value:
"The remote web server is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The version of IBM HTTP Server running on the remote host is affected by multiple vulnerabilities
as referenced in the 7274072 advisory.

  - IBM Web Server Plug-ins for WebSphere Application Server and WebSphere Liberty 8.5, 9.0 IBM WebSphere
    Application Server and WebSphere Application Server Liberty are vulnerable to remote code execution in the
    Web Server Plug-ins, through a specially crafted request. (CVE-2026-8633)

  - IBM Web Server Plug-ins for WebSphere Application Server and WebSphere Liberty 8.5, 9.0 IBM WebSphere
    Application Server and WebSphere Application Server Liberty are vulnerable to HTTP request smuggling in
    the Web Server Plug-ins through a specially crafted request. (CVE-2026-8620)

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.ibm.com/support/pages/node/7274072");
  script_set_attribute(attribute:"solution", value:
"Update to IBM HTTP Server version 8.5.5.30 or 9.0.5.28, or later. Alternatively, upgrade to the minimal fix pack levels
required by the interim fix and then apply Interim Fix PH71342.");
  script_set_attribute(attribute:"agent", value:"unix");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/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:N/S:U/C:H/I:H/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-2026-8633");

  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:"2026/05/26");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/05/26");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/08/18");

  script_set_attribute(attribute:"potential_vulnerability", value:"true");
  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:ibm:http_server");
  script_set_attribute(attribute:"thorough_tests", value:"true");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Web Servers");

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

  script_dependencies("ibm_http_server_nix_installed.nbin");
  script_require_keys("installed_sw/IBM HTTP Server (IHS)", "Settings/ParanoidReport");

  exit(0);
}


include('vcf.inc');

# paranoid for config check
if (report_paranoia < 2)
  audit(AUDIT_PARANOID);

app = 'IBM HTTP Server (IHS)';

app_info = vcf::get_app_info(app:app);
vcf::check_granularity(app_info:app_info, sig_segments:4);

if ('PH71342' >< app_info['Fixes'])
  audit(AUDIT_INST_VER_NOT_VULN, app);

constraints = [
  { 'min_version' : '8.5.0.0', 'max_version' : '8.5.5.29', 'fixed_display' : '8.5.5.30 or Interim Fix PH71342' },
  { 'min_version' : '9.0.0.0', 'max_version' : '9.0.5.27', 'fixed_display' : '9.0.5.28 or Interim Fix PH71342' }
];

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