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Date: Wed, 18 Apr 2012 18:35:25 -0600
From: Kurt Seifried <kseifried@...hat.com>
To: oss-security@...ts.openwall.com
CC: Kees Cook <keescook@...omium.org>
Subject: Re: CVE request: Xorg input device format string flaw

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On 04/18/2012 02:37 PM, Kees Cook wrote:
> On Wed, Apr 18, 2012 at 1:23 PM, Kurt Seifried
> <kseifried@...hat.com> wrote:
>> On 04/18/2012 01:28 PM, Kees Cook wrote:
>>> Hello,
>>> 
>>> Adding an input device with a malicious name can trigger a
>>> format string flaw in Xorg's logging subsystem. For builds of
>>> Xorg lacking -D_FORTIFY_SOURCE=2 (or 32-bit systems lacking the
>>> fix to fortify[1]) this can lead to arbitrary code execution as
>>> the Xorg user, usually root. When built with fortify, this is a
>>> denial of service, since Xorg will abort.
>>> 
>>> Proposed solution patch series can be found here: 1/4 
>>> http://patchwork.freedesktop.org/patch/10000/ 2/4 
>>> http://patchwork.freedesktop.org/patch/9998/ 3/4 
>>> http://patchwork.freedesktop.org/patch/9999/ 4/4 
>>> http://patchwork.freedesktop.org/patch/10001/
>>> 
>>> -Kees
>>> 
>>> [1] 
>>> http://sourceware.org/git/?p=glibc.git;a=commitdiff;h=7c1f4834d398163d1ac8101e35e9c36fc3176e6e
>>
>>
>>> 
So
>>> 
>> are you asking for just the device name issue covered in
>> 
>> http://patchwork.freedesktop.org/patch/10001/

Please use CVE-2012-2118 for this issue (Xorg device name logging
format string).

> Yeah, but I wanted to point to the entire patch series, since that 
> fix, I think, depends on pieces from the others.
> 
> -Kees

Ok, it's just that some of them have other somewhat security sounding
issues (I haven't looked in depth though, was hoping you had).


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

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