Software Engineering Institute

The Autonomy Ultraseek search engine contains a URL redirection vulnerability in the /cs.html?url= paramater. The destination URL can be obsfucated in the redirect by using URL encoding techniques. To exploit this issue, an attacker would need to get a user to click on a link or browse to a website.

An attacker may be able to redirect a user to any website.

Ultraseek administrators should contact Ultraseek support for information on how to obtain updated software that addresses this issue.

Workarounds

Using firewalls, reverse proxy servers, or web application firewalls to block URLs that contain the string /cs.html?url= may prevent some attackers from exploiting this vulnerablity. This workaournd can be evaded by URL obsfucation/encoding and will not be completely effective if the web server uses SSL.