Actually while I would check the logs in the course of the
investigation the fact of the matter is that editing log files is
pretty trivial for package exploits.
Couple thoughts on my side:
- on the packages themselves do ls -asl (and/or other variations)
that may give you some data
- since your using a old release but there is probably a good reason
for it be sure to check:
- vulnerabilties for all software running on 127.0.0.1 as well as
the normal network side
- that the software running even if it is listening on the localhost
should be running/is needed
- be sure additional modules for apache that are not needed are not
running ie:
- proxy, dav etc
- check the rev on php as well as if php allows remote file upload
capabilities
Preventative measures
- always make use of sshd_config's ability to set a allow user line
and never allow remote root
- lock down the box daemons with tcpwrappers, iptables etc if its a
web server you shouldn't see
ftp traffic from/to it, or irc etc.
- grab something that can independantly verify the binaries on your box
- Brian
On Aug 20, 2008, at 6:44 AM, Chris Thomas wrote:
I agree with Chris about checking the log files. When you first
found the program, you didn't know when it got installed on your
box. Was it installed a week, month, year ago? So, searching the
logs would probably be useless for that attack. Since you deleted
the app and it came back, you have an appox. time, so you only have
a little bit of logs to look through.
Chris
----- Original Message ----
From: Chris Penn <[email protected]>
To: [email protected]; SoCal LUG Users List <[email protected]
>
Sent: Wednesday, August 20, 2008 3:41:55 AM
Subject: Re: [LinuxUsers] Could use some help please,
<snip>
You definitely want to check security settings and logs. chkrootkit
and lynis are pretty neat. What version of Tomcat?
Chris...
On Wed, Aug 20, 2008 at 1:25 AM, Roger E. Rustad, Jr
<[email protected]> wrote:
Ann Richmond wrote:
Hi, its Ann Richmond.
A few weeks ago we found some applications had been installed under
tomcat on a few servers. The war file was there as well as the
expanded
apps.
I'll bet you've got pwned.
Perhaps someone else has answered this, but I would recommend
googling
some of the security websites and seeing if there is anything
(default
security settings, easy passwords, etc) that kiddie scripters are
taking
advantage of.
Also, have you checked out chkrootkit?
http://www.chkrootkit.org/
What user is Tomcat running under? Maybe someone got root access
quite
easily that way...
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