Ubuntu Security Notice USN-488-1
17th July, 2007
libapache2-mod-perl2 vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 7.04
- Ubuntu 6.10
- Ubuntu 6.06 LTS
Details
Alex Solovey discovered that mod_perl did not correctly validate certain
regular expression matches. A remote attacker could send a specially
crafted request to a web application using mod_perl, causing the web
server to monopolize CPU resources. This could lead to a remote denial
of service.
Update instructions
The problem can be corrected by updating your system to the following package version:
- Ubuntu 7.04:
- libapache2-mod-perl2 2.0.2-2.3ubuntu1
- Ubuntu 6.10:
- libapache2-mod-perl2 2.0.2-2ubuntu1.6.10.1
- Ubuntu 6.06 LTS:
- libapache2-mod-perl2 2.0.2-2ubuntu1.6.06.1
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system upgrade is sufficient to effect the
necessary changes.