Re: Webmin Doesn't Clean Env (root exploit)

From: Marcus Meissner (Marcus.Meissnerat_private)
Date: Tue May 29 2001 - 07:14:06 PDT

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    On Sat, May 26, 2001 at 04:55:35PM -0400, J. Nick Koston wrote:
> Not sure if this is known, however I know I've seen quite a few people
> still using webmin 0.84.
> 
> Webmin doesn't seem to clean the env properly when starting apache
> (probably in other cases as well)
> 
> It leaves the var HTTP_AUTHORIZATION set.  All you need to do is run
> it though a mime 64 decode and you have the login and password to
> webmin.  (it also leaves SERVER_PORT set so there should be no problem
> figuring out where the webmin is)

This is also a problem with newer versions.

While it now uses a Cookie to save authorization information, this cookie
is passed to apache as environment variable and could be queried, environment
variable is:

	HTTP_COOKIE=sid=1054633991

If you have this session id, you can attach to a running webmin session
easily (for instance if the administrator forgot to logoff and just quitted
his browser or has it still open).

Ciao, Marcus
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