[6917] in bugtraq
Security flaw in Accelerated-X 4.1
daemon@ATHENA.MIT.EDU (Stefan Laudat)
Mon Jun 8 11:12:44 1998
Date: Mon, 8 Jun 1998 17:31:36 +0300
Reply-To: Stefan Laudat <ninja@MS54.PROTV.RO>
From: Stefan Laudat <ninja@MS54.PROTV.RO>
To: BUGTRAQ@NETSPACE.ORG
Hello,
I don't know if this was posted before, please accept my appologies if so.
Seems like the guys at XiG forgot the meaning of /tmp security ...
The main problem is that the Install program of the AcceleratedX package
logs all in a file named /tmp/Install.log. So, every user knowing that
Mr ReWT is going to install this X server on his box can overwrite any
file on the system.
The procedure is very simple: ln -s /etc/shadow /tmp/Install.log
Oh, some of you may tell me : "What if AcceleratedX is already
installed?". There is also an Uninstall.log =->
I think the /tmp/Xaccel.ini is also the temporary file for new
configurations, so wait for the root to change something and KAB00M! :))
I am too lazy to cc this to the guys at XiG so please do it if you want.
---
Stefan Laudat aka Ninja
pager: 2233789 / 4105
ninja@protv.ro
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