1. Ubuntu Security Notices
  2. USN-160-1

USN-160-1: Apache 2 vulnerabilities

Publication date

4 August 2005

Overview

Apache 2 vulnerabilities

Releases

Details

Marc Stern discovered a buffer overflow in the SSL module’s
certificate revocation list (CRL) handler. If Apache is configured to
use a malicious CRL, this could possibly lead to a server crash or
arbitrary code execution with the privileges of the Apache web server.
(CAN-2005-1268)

Watchfire discovered that Apache insufficiently verified the
“Transfer-Encoding” and “Content-Length” headers when acting as an
HTTP proxy. By sending a specially crafted HTTP request, a remote
attacker who is authorized to use the proxy could exploit this to
bypass web application firewalls, poison the HTTP proxy cache, and
conduct cross-site scripting attacks against other proxy users.
(CAN-2005-2088)

Marc Stern discovered a buffer overflow in the SSL module’s
certificate revocation list (CRL) handler. If Apache is configured to
use a malicious CRL, this could possibly lead to a server crash or
arbitrary code execution with the privileges of the Apache web server.
(CAN-2005-1268)

Watchfire discovered that Apache insufficiently verified the
“Transfer-Encoding” and “Content-Length” headers when acting as an
HTTP proxy. By sending a specially crafted HTTP request, a remote
attacker who is authorized to use the proxy could exploit this to
bypass web application firewalls, poison the HTTP proxy cache, and
conduct cross-site scripting attacks against other proxy users.
(CAN-2005-2088)

Update instructions

In general, a standard system update will make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
5.04 hoary apache2-mpm-worker – 
apache2-mpm-perchild – 
apache2-mpm-prefork – 
apache2-mpm-threadpool – 
4.10 warty apache2-mpm-worker – 
apache2-mpm-perchild – 
apache2-mpm-prefork – 
apache2-mpm-threadpool – 

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References

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