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 . >> 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 . >> > 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 >> >>  https://github.com/revolutionary/zergRush/blob/master/zergRush.c >>  http://revolutionary.io/ >> Please use CVE-2011-4123 for this issue. -- -Kurt Seifried / Red Hat Security Response Team
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