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Date: Fri, 24 May 2013 02:45:05 -0600
From: Kurt Seifried <kseifried@...hat.com>
To: Henri Salo <henri@...v.fi>
CC: oss-security@...ts.openwall.com, Thomas Pollet <thomas.pollet@...il.com>
Subject: Re: plone, rrdtool, zenoss bugs

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On 05/24/2013 01:58 AM, Henri Salo wrote:
> On Fri, May 24, 2013 at 01:37:59AM -0600, Kurt Seifried wrote:
>> Ho likely is an attacker to be able to pass a format string to it
>> though?
> 
> Hard to say how many and which applications are using this library
> with user input. At least original reporter pointed out
> Zenoss-case. I can find out if there is others if that is needed,
> but obviously it's impossible to list all use cases.
> 
> --- Henri Salo
> 

The original reporter never replied =( [ping!]

Any ways:

> Also, the rrdtool python module crashes on format string exploit $
> python -c "import rrdtool 
> rrdtool.graph('/tmp/out.png','-f','%n%n')" Segmentation fault
> 
> this module is used by zenoss to create graphs (zenoss users are
> able to pass arguments to rrdtool).

It just doesn't sound like much of a problem (user logs in, passes
some mucky data to rrdtool causing it to crash, the system is fine,
that instance of rrdtool dies and gets cleaned up). No real trust
boundary gets violated/no DoS in any meaningful way as I understand
it. Unless an exploitable scenario comes to light I don't think this
is an issue really.

- -- 
Kurt Seifried Red Hat Security Response Team (SRT)
PGP: 0x5E267993 A90B F995 7350 148F 66BF 7554 160D 4553 5E26 7993
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