Apache 2.0: Denial of Service vulnerability

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200508-15 / apache
Release Date	August 25, 2005
Latest Revision	December 30, 2007: 03
Impact	normal
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
www-servers/apache	< 2.0.54-r9	>= 2.0.54-r9, < 2.0	All supported architectures

Related bugreports: #102991

Synopsis

A bug in Apache may allow a remote attacker to perform a Denial of Service attack.

2. Impact Information

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.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All apache users should upgrade to the latest version:

Code Listing 3.1: Resolution

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

4. References

Page updated August 25, 2005

Summary: This is a Gentoo Linux Security Advisory

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