CVE-2006-1183
The Ubuntu 5.10 installer does not properly clear passwords from the installer log file (questions.dat), and leaves the log file with world-readable permissions, which allows local users to gain privileges.
Date published : 2006-03-13
http://www.securityfocus.com/bid/17086
https://launchpad.net/distros/ubuntu/+source/shadow/+bug/34606