Secunia Security Advisory – Ubuntu has issued an update for backuppc. This fixes a security issue, which can be exploited by malicious users to bypass certain security restrictions.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/81854/sa36973.txt
Source: https://packetstormsecurity.com/files/81854/Secunia-Security-Advisory-36973.html