Vulnerability Assessment & Network Security Forums

If through a vulnerability assessment, a network security issue is detected for the vulnerability below, applying the appropriate security patches in a timely matter is very important. If you have detected that your system has already been compromised, following CERT's Network Security recovery document will assist with recommended steps for system recovery.

Home >> Browse Vulnerability Assessment Database >> Denial of Service >> cisco http DoS

Vulnerability Assessment Details

cisco http DoS

Vulnerability Assessment Summary
Crashes a Cisco router

Detailed Explanation for this Vulnerability Assessment
It was possible to lock
the remote server (probably a Cisco router)
by doing the request :

GET /%% HTTP/1.0

You need to reboot it to make it work
again.

A possible hacker may use this flaw to crash this
host, thus preventing your network from
working properly.

Workaround : add the following rule
in your router :

no ip http server

Solution : contact CISCO for a fix
Network Security Threat Level: High

Networks Security ID: 1154

Vulnerability Assessment Copyright: This script is Copyright (C) 2000 Renaud Deraison

Cables, Connectors