full-disclosure - Re: [SECURITY] [DSA 1870-1] New pidgin packages fix arbitrary code execution

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Date: Thu, 20 Aug 2009 04:02:50 +0200
From: Nico Golde <fd@...lde.de>
To: full-disclosure@...ts.grok.org.uk
Subject: Re: [SECURITY] [DSA 1870-1] New pidgin packages
	fix arbitrary code execution

Hi,
* Nico Golde <nion@...ian.org> [2009-08-20 03:28]:
> --------------------------------------------------------------------------
> Debian Security Advisory DSA-1870-1                    security@...ian.org
> http://www.debian.org/security/                                 Nico Golde
> August 19th, 2009                       http://www.debian.org/security/faq
> --------------------------------------------------------------------------
>
> Package        : pidgin
> Vulnerability  : insufficient input validation
> Problem type   : remote
> Debian-specific: no
> CVE ID         : CVE-2009-2694
>
> Federico Muttis discovered that libpurple, the shared library that adds
> support for various instant messaging networks to the pidgin IM client, is
> vulnerable to a heap-based buffer overflow.  This issue exists because of
> an incomplete fix for CVE-2008-2927 and CVE-2009-1376.  An attacker can
> exploit this by sending two consecutive SLP packets to a victim via MSN.
[...]
Sorry, just got used to writing that, this is no buffer
overflow. Actually the attacker can write to almost any
arbitrary location.

Cheers
Nico
-- 
Nico Golde - JAB: nion@...ber.ccc.de | GPG: 0x73647CFF
Forget about that mouse with 3/4/5 buttons -
gimme a keyboard with 103/104/105 keys!

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