Chkrootkit messages ?

David Timms dtimms at bigpond.net.au
Mon May 1 13:37:19 UTC 2006


Bob Goodwin wrote:
> 
> This is a fairly new FC5 installation, new ISP, and new wireless router 
> system, all together adding up to numerous possibilities for errors.  I 
> installed and ran "chkrootkit" this morning with the following result 
> and don't know how to deal with it?  Any suggestions appreciated.
> 
> Checking `asp'... not infected
> Checking `bindshell'... not infected
> Checking `lkm'... You have     1 process hidden for readdir command
> You have     1 process hidden for ps command
> chkproc: Warning: Possible LKM Trojan installed
I get:
Checking `lkm'... chkproc: nothing detected

...
> Checking `chkutmp'...  The tty of the following user process(es) were 
> not found
> in /var/run/utmp !
> ! RUID          PID TTY    CMD
> ! root         2301 tty7   X :0 -auth /root/.serverauth.2284
> chkutmp: nothing deleted
rkhunter and possibly chkrootkit have not been modified to take into 
account the FC5 norms (I think).

> I scanned from "/" with f-prot yesterday and there were no indications 
> of "infection."
The point of a rootkit is that any command / program could no longer be 
trusted: eg scanner asks OS: "open file x to check if its a got a virus" 
OS responds with "data" - but it is not the real data inside the file.

I've got the following installed:
rkhunter-1.2.8-3.fc5
chkrootkit-0.46a-2.2.fc5.rf

Is your chkrootkit the same version ?

It think it's worth installing rkhunter (either from core or extras - 
I've forgotten) for a second opinion.

DaveT.




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