Referenced CVEs: 
CVE-2006-2449
Description: 
=========================================================== Ubuntu Security Notice USN-301-1 June 14, 2006 kdebase vulnerability CVE-2006-2449 =========================================================== A security issue affects the following Ubuntu releases: Ubuntu 5.04 Ubuntu 5.10 Ubuntu 6.06 LTS This advisory also applies to the corresponding versions of Kubuntu, Edubuntu, and Xubuntu. The problem can be corrected by upgrading your system to the following package versions: Ubuntu 5.04: kdm 4:3.4.0-0ubuntu18.3 Ubuntu 5.10: kdm 4:3.4.3-0ubuntu7 Ubuntu 6.06 LTS: kdm 4:3.5.2-0ubuntu27 In general, a standard system upgrade is sufficient to effect the necessary changes. Details follow: Ludwig Nussel discovered that kdm managed the ~/.dmrc file in an insecure way. By performing a symlink attack, a local user could exploit this to read arbitrary files on the system, like private files of other users, /etc/shadow, and similarly sensitive data.