Ubuntu Security Notice USN-981-1
31st August, 2010
libwww-perl vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 10.04 LTS
- Ubuntu 9.10
- Ubuntu 9.04
- Ubuntu 8.04 LTS
- Ubuntu 6.06 LTS
Software description
- libwww-perl
Details
It was discovered that libwww-perl incorrectly filtered filenames suggested
by Content-Disposition headers. If a user were tricked into downloading a
file from a malicious site, a remote attacker could overwrite hidden files
in the user's directory.
Update instructions
The problem can be corrected by updating your system to the following package version:
- Ubuntu 10.04 LTS:
- libwww-perl 5.834-1ubuntu0.1
- Ubuntu 9.10:
- libwww-perl 5.831-1ubuntu0.1
- Ubuntu 9.04:
- libwww-perl 5.820-1ubuntu0.1
- Ubuntu 8.04 LTS:
- libwww-perl 5.808-1ubuntu0.1
- Ubuntu 6.06 LTS:
- libwww-perl 5.803-4ubuntu0.1
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.