Charles Morris discovered a race condition in sudo which could lead to privilege escalation. If /etc/sudoers allowed a user the execution of selected programs, and this was followed by another line containing the pseudo-command “ALL”, that user could execute arbitrary commands with sudo by creating symbolic links at a certain time.
Please note that this does not affect a standard Ubuntu installation.
21 June 2005
A security issue affects these releases of Ubuntu and its derivatives:
Charles Morris discovered a race condition in sudo which could lead to privilege escalation. If /etc/sudoers allowed a user the execution of selected programs, and this was followed by another line containing the pseudo-command “ALL”, that user could execute arbitrary commands with sudo by creating symbolic links at a certain time.
Please note that this does not affect a standard Ubuntu installation.
The problem can be corrected by updating your system to the following package versions:
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
Vulmon