USN-981-1: libwww-perl vulnerability

31 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


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 versions:

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:

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