Apache 2.0: Denial of Service vulnerability

Background

The Apache HTTP Server Project is a featureful, freely-available HTTP (Web) server.

Description

Filip Sneppe discovered that Apache improperly handles byterange requests to CGI scripts.

Impact

A remote attacker may access vulnerable scripts in a malicious way, exhausting all RAM and swap space on the server, resulting in a Denial of Service of the Apache server.

Workaround

There is no known workaround at this time.

Resolution

All apache users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=www-servers/apache-2.0.54-r9"