tags moreinfo unreproducible
thanks

On Mon, 2005-12-05 at 22:19 +0100, Ulrich Huber wrote:
> Package: Squirrelmail
> Version 1.4.4-6sarge1
> 
> I think there might be a security Problem with squirrelmail. I got 2 
> different servers hacked, both of them have the following apperaing in the 
> logfiles:

> and some minutes later, there was a phishing Website installed in 
> /usr/share/squirrelmail/src/ with a directory .us/ and some stuff below ....
> 
> As I got no idea what else could have happend...maybe you can help ....

Hello Ulrich,

I highly doubt that the problem is SquirrelMail here, for the following
reasons:

- SquirrelMail doesn't ship a .us dir (or any dot-dirs) in its package.
- The web server does not have write access to /usr/share, only root has
that, so it is impossible to write to that dir by just doing requests,
or even, by doing anything at all with squirrelmail.
- The requests you supply do not indicate placing that dir there at all,
they just show that it's being used.

Therefore, I think you are probably hacked in some other way, and
possibly then the malicious dir was installed under /usr/share. The logs
then show that someone used it.

In any case you should discontinue using those systems immediately and
do a full reinstall, since someone has had root-level access. If you
need more support for solving that problem, this bug report is not the
right place; you could try a mailinglist or hiring a consultant.


Good luck!

Thijs Kinkhorst

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