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Re: chkrootkit infected ports 2881

Adam Hardy on 03/08/08 14:13, wrote:
My webserver system is actually a UML slice of a system at memset.co.uk and all it does is run Apache Tomcat and sshd and the stuff from memset - I thought it was pretty safe until I came back today and found my nightly email report from chkrootkit said:

The following suspicious files and directories were found:


The .ramfs started appearing when I upgraded chkrootkit, so I never worried about it, but Friday night's INFECTED alert was a slap in the face with a wet fish. Saturday night's report went back to normal - no mention of the port.

I scanned it from grc.com/x/portprobe and it came back as closed.

The only mention I can find in the logs is:

root@hardyaa1:~# grep 2881 /var/log/*
2881 660 1 root disk 0 Wed Apr 30 11:32:37 2008 /dev/rd/c1d30

and that's a PID, not a port, right?

So how bad does this look? Should I clean the system? If it is rooted, how can I tell what the security flaw was? My password at that point (since changed) was CE0dff2*£ so if it was a brute force attack, then wow, they did well.

I talked to the support at the hosting company and they looked at the system and said they couldn't see anything wrong with it - but they can re-image it for me which normally costs a fee.

Is it worth re-imaging my system and re-installing everything?

I still have no idea what chkrootkit means when it says a port is infected.


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