IBM HTTP Server 8.5.0.0 < 8.5.5.24 / 9.0.0.0 < 9.0.5.16 Request Splitting Attacks (6963650)

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

include('compat.inc');

if (description)
{
  script_id(191005);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/02/27");

  script_cve_id("CVE-2023-25690");

  script_name(english:"IBM HTTP Server 8.5.0.0 < 8.5.5.24 / 9.0.0.0 < 9.0.5.16 Request Splitting Attacks (6963650)");

  script_set_attribute(attribute:"synopsis", value:
"The remote web server is affected by a information disclosure vulnerability.");
  script_set_attribute(attribute:"description", value:
"The version of IBM HTTP Server running on the remote host is affected by an request splitting attack vulnerability due 
to an error when mod_proxy is enabled along with some form of RewriteRule or ProxyPassMatch. A remote attacker could 
exploit this vulnerability to bypass access controls in the proxy server, proxying unintended URLs to existing origin 
servers, and cache poisoning.

Note that Nessus has not tested for this issue 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/6963650");
  script_set_attribute(attribute:"solution", value:
"Upgrade to IBM HTTP Server version 8.5.5.24, 9.0.5.16, or later. Alternatively, upgrade to the minimal fix pack levels
 required by the interim fix and then apply Interim Fix PH53014.");
  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:POC/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:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2023-25690");

  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:"2023/04/04");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/04/04");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/02/26");

  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) 2024 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)");

  exit(0);
}

include('vcf.inc');

var app = 'IBM HTTP Server (IHS)';
var fix = 'Interim Fix PH53014';

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

if ('PH53014' >< app_info['Fixes'])
  audit(AUDIT_INST_VER_NOT_VULN, app);

var constraints = [
 { 'min_version' : '8.5.0.0', 'max_version' : '8.5.5.23', 'fixed_display' : '8.5.5.24 or ' + fix },
 { 'min_version' : '9.0.0.0', 'max_version' : '9.0.5.15', 'fixed_display' : '9.0.5.16 or ' + fix }
];

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