bugtraq - Re: Possible race condition in Symantec AntiVirus Scan Engine for Red Hat Linux during LiveUpdate

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Message-ID: <200402161621.i1GGLdec009058@turing-police.cc.vt.edu>
Date: Mon, 16 Feb 2004 11:21:39 -0500
From: Valdis.Kletnieks@...edu
To: "Dr. Peter Bieringer" <pbieringer@...asec.de>
Cc: bugtraq@...urityfocus.com, full-disclosure@...ts.netsys.com
Subject: Re: Possible race condition in Symantec AntiVirus Scan Engine for Red Hat Linux during LiveUpdate

On Mon, 16 Feb 2004 16:49:53 +0100, "Dr. Peter Bieringer" said:

> logfile=/tmp/LiveUpdate.log  <---!!!!!!
> 
> Impact:
> Before first run of LiveUpdate (like suggested in doc, user "symantec" does 
> this) a possible race condition via a symlink attack by another user will 
> result in the creation of a new file (as user "symantec") or appending 
> LiveUpdate log to an existent file (owned by user "symantec").

For bonus points, figure out what happens if you reboot and your /etc/fstab has this:

none                    /tmp            tmpfs   mode=1777       0 0

The gift that keeps on giving. ;)

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