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Message-ID: <4EB95D1B.5080508@redhat.com>
Date: Tue, 08 Nov 2011 09:47:23 -0700
From: Kurt Seifried <kseifried@...hat.com>
To: oss-security@...ts.openwall.com
CC: Dan Rosenberg <dan.j.rosenberg@...il.com>
Subject: Re: Re: CVE request: Android: vold stack buffer overflow
On 11/08/2011 06:08 AM, Dan Rosenberg wrote:
> On Tue, Nov 8, 2011 at 8:03 AM, Dan Rosenberg <dan.j.rosenberg@...il.com> wrote:
>> A local user with group "log" on Android may send a malformed message
>> to vold ("volume daemon"), causing a stack buffer overflow. This has
>> been demonstrated to be exploitable to escalate privileges to root on
>> all Froyo (2.2.x) and Gingerbread (2.4.x) devices via freeing an
>> arbitrary heap object and triggering a use-after-free condition [1].
>> It appears the bug was silently patched in Honeycomb (3.x), but note
>> that since Honeycomb is not open source, it does not fall within the
>> scope of this list. Bug discovered and exploited by the Revolutionary
>> team [2].
>>
> Oops, a few minor corrections.
>
> Typo: Gingerbread is 2.3.x. Also, the vulnerability actually lives in
> the libsysutils library, and was demonstrated to be exploitable via
> vold, which makes use of the affected library function. Sorry for the
> noise.
>
>> -Dan
>>
>> [1] https://github.com/revolutionary/zergRush/blob/master/zergRush.c
>> [2] http://revolutionary.io/
>>
Please use CVE-2011-4123 for this issue.
--
-Kurt Seifried / Red Hat Security Response Team
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