Follow @Openwall on Twitter for new release announcements and other news
[<prev] [next>] [<thread-prev] [day] [month] [year] [list]
Date: Tue, 19 Apr 2011 18:20:35 +0200
From: Jan Lieskovsky <jlieskov@...hat.com>
To: oss-security@...ts.openwall.com
CC: "Steven M. Christey" <coley@...us.mitre.org>,
        Gerlof Langeveld <gerlof@...omputing.nl>
Subject: Re: CVE Request -- atop: Symlink attacks via process
 accounting file

Jan Lieskovsky wrote:
> 
> Hello Josh, Steve, vendors,
> 
>   atop v1.23 and earlier created process accounting file 
> (/tmp/atop.d/atop.acct)
> in an insecure way. A local attacker could use this flaw to conduct symlink
> attacks (e.g. overwrite arbitrary system files).

Looked more into this issue and seems it may not be possible to misuse this
issue. The steps are below:

tmp]# mkdir /etc/hello
tmp]# ln -s /etc/hello atop.d
tmp]# service atop start
Starting atop: [  OK  ]

But atop detects the /tmp/atop.d directory already exists (/var/log/atop/atop.log contains):
warning: no process exit detection (can not create directory /tmp/atop.d)

So doesn't seem to be exploitable => taking the CVE request back, no CVE needed.

Should have checked this earlier, sorry for the noise.

Regards, Jan.
--
Jan iankko Lieskovsky / Red Hat Security Response Team

> 
> References:
> [1] http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=622794
> [2] http://secunia.com/advisories/44175/
> [3] https://bugzilla.redhat.com/show_bug.cgi?id=697848
> 
> Could you allocate a CVE id for this?
> 
> Thanks && Regards, Jan.
> -- 
> Jan iankko Lieskovsky / Red Hat Security Response Team
> 
> 

Powered by blists - more mailing lists

Please check out the Open Source Software Security Wiki, which is counterpart to this mailing list.

Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.