full-disclosure - Re: MacOS X 10.5/10.6 libc/strtod(3) buffer overflow

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Message-ID: <4B4B5F4D.9030903@securityreason.com>
Date: Mon, 11 Jan 2010 18:26:37 +0100
From: Maksymilian Arciemowicz <cxib@...urityreason.com>
CC: full-disclosure@...ts.grok.org.uk
Subject: Re: MacOS X 10.5/10.6 libc/strtod(3) buffer
	overflow

Joshua Levitsky wrote:
> On Thu, Jan 7, 2010 at 7:20 PM, Maksymilian Arciemowicz
> <cxib@...urityreason.com <mailto:cxib@...urityreason.com>> wrote:
> 
>     [ MacOS X 10.5/10.6 libc/strtod(3) buffer overflow ]
> 
>     Author: Maksymilian Arciemowicz and sp3x
>     http://SecurityReason.com
> 
>     CVE: CVE-2009-0689
>     CWE: CWE-119
>     Risk: High
>     Remote: Yes
> 
> 
> I tested doing "printf %1.262159f 1.1" in a shell login on 10.4.11 and
> it took out my session. I imagine this means 10.4.11 is vulnerable as
> well no? Tiger is still very popular in enterprise environments that are
> slow to upgrade.
> 
> -- 
> Joshua Levitsky, MCSE, CISSP
> http://www.jnuxhosting.net
> http://www.jnux.net
> http://blog.joshie.com/
> [5957 F27C 9C71 E9A7 274A 0447 C9B9 75A4 9B41 D4D1]
> 

Could you check perl PoC ?
It should overwrite esi and edi register

esi=0x41414141
edi=15

-- 
Best Regards,
------------------------
pub   1024D/A6986BD6 2008-08-22
uid                  Maksymilian Arciemowicz (cxib)
<cxib@...urityreason.com>
sub   4096g/0889FA9A 2008-08-22

http://securityreason.com
http://securityreason.com/key/Arciemowicz.Maksymilian.gpg


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