full-disclosure - [CVE-2014-1860] PHP object insertion / possible RCE in Contao CMS <= 3.2.4

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Message-ID: <CAEDdjHcPse3kBJ_4=rCgv1gshFiTz+MJkzcxGWm6p_86zJ7myg@mail.gmail.com>
Date: Mon, 3 Feb 2014 21:00:32 +0000
From: Pedro Ribeiro <pedrib@...il.com>
To: full-disclosure@...ts.grok.org.uk
Subject: [CVE-2014-1860] PHP object insertion / possible
	RCE in Contao CMS <= 3.2.4

Hi,

I have discovered a vulnerability that might lead to code execution in
Contao CMS <= 3.2.4
Contao CMS <= 3.2.4 does not properly validate user input in several
locations which is then passed directly into PHP's unserialize.

This has been fixed in Contao 3.2.5 as per commit:
https://github.com/contao/core/commit/8c9cb044bdc887a8202bb65a64545c025664f957
and
https://github.com/contao/core/commit/1717336598fdcf1ed3f4ad488e140147cb31516d

Announcements can be found at

https://contao.org/en/news/contao-3_2_5.html

https://contao.org/en/news/contao-2_11_14.html

Thanks to the Contao developers for being so responsive.
The full report can be found at my repo in
https://github.com/pedrib/PoC/blob/master/contao-3.2.4.txt

Regards,

Pedro Ribeiro
Agile Information Security

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