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full-disclosure-uk: Re: [Full-disclosure] MacOS X 10.5/10.6 libc

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

From: Maksymilian Arciemowicz <cxib_at_nospam>
Date: Mon Jan 11 2010 - 17:26:37 GMT


Joshua Levitsky wrote:
> On Thu, Jan 7, 2010 at 7:20 PM, Maksymilian Arciemowicz
> <cxib@securityreason.com <mailto:cxib@securityreason.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@securityreason.com> sub 4096g/0889FA9A 2008-08-22 http://securityreason.com http://securityreason.com/key/Arciemowicz.Maksymilian.gpg

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