full-disclosure - Re: Apple Safari 4 Beta feeds: URI NULL Pointer Dereference Denial of, Service Vulnerability

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Message-ID: <c83481820902261639u60f8d85k41da644572452b17@mail.gmail.com>
Date: Thu, 26 Feb 2009 19:39:37 -0500
From: Jeremy Brown <0xjbrown41@...il.com>
To: full-disclosure@...ts.grok.org.uk
Subject: Re: Apple Safari 4 Beta feeds: URI NULL Pointer
	Dereference Denial of, Service Vulnerability

Not all are practically exploitable, but exploitation seems to be
possible at least on ARM, XScale, and possibly PowerPC as
www.juniper.net/solutions/literature/white_papers/Vector-Rewrite-Attack.pdf
points out. As for examples.. doesn't look like they are public.

On Thu, Feb 26, 2009 at 6:52 PM, Jubei Trippataka
<vpn.1.fanatic@...il.com> wrote:
>
>
> On Fri, Feb 27, 2009 at 10:54 AM, jf <jf@...glingpointers.net> wrote:
>>
>> also keep in mind that null ptr deref's can sometimes be exploitable--
>> especially on certain processors that store important things at 0x0;
>> of which, from what i recall, the iphone is one.
>>
>
> Can you please give one example of a NULL deref that was exploitable?
>
> --
> ciao
>
> JT
>
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