UnitedLinux 1.0 ships with /usr/src/packages recursively set with full read, write, and execute permissions which makes way for planting of rogue source, ultimately leading to a full system compromise.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/31007/DSR-unitedlinux.txt
Source: https://packetstormsecurity.com/files/31007/DSR-unitedlinux.txt.html