This is very embarrassing...
We found out that the Unreal188.8.131.52.tar.gz file on our mirrors has been replaced quite a while ago with a version with a backdoor (trojan) in it.
This backdoor allows a person to execute ANY command with the privileges of the user running the ircd. The backdoor can be executed regardless of any user
restrictions (so even if you have passworded server or hub that doesn't allow any users in).
It appears the replacement of the .tar.gz occurred in November 2009 (at least on some mirrors). It seems nobody noticed it until now.
Vollständiger Beitrag: http://forums.unrealircd.com/viewtopic.php?t=6562How to check if you're running the backdoored version
One is to check if the Unreal184.108.40.206.tar.gz you have is good or bad by running 'md5sum Unreal220.127.116.11.tar.gz' on it.
Backdoored version (BAD) is: 752e46f2d873c1679fa99de3f52a274d
Official version (GOOD) is: 7b741e94e867c0a7370553fd01506c66
The other way is to run this command in your Unreal3.2 directory:
grep DEBUG3_DOLOG_SYSTEM include/struct.h
If it outputs two lines, then you're running the backdoored/trojanized version.
If it outputs nothing, then you're safe and there's nothing to do.