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Re: NSE for detecting vulnerable PHP-CGI setups (CVE2012-1823)
From: Patrik Karlsson <patrik () cqure net>
Date: Sat, 5 May 2012 07:55:14 +0200

On Fri, May 4, 2012 at 10:54 PM, Paulino Calderon
<paulino () calderonpale com>wrote:

 On 04/05/2012 03:35 p.m., Patrik Karlsson wrote:



On Fri, May 4, 2012 at 9:25 PM, David Fifield <david () bamsoftware com>wrote:

On Fri, May 04, 2012 at 12:30:00PM -0500, Paulino Calderon wrote:
Hi list,

Here is my script for detecting vulnerable PHP-CGI setups
(CVE2012-1823). This is a pretty scary vuln as it affects a lot of
installations. Here is the full advisory:
http://eindbazen.net/2012/05/php-cgi-advisory-cve-2012-1823/
I'm going to look more into it to write a reliable exploitation
script too. So far it seems the -r flag is not available in all the
setups and we will need to exploit via RFI to be 100% accurate.

 Nice, Paulino. Please commit this script.

David Fifield
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Great work! Would attempting to match both the opening and closing tag
improve detection?

 //Patrik
--
Patrik Karlsson
http://www.cqure.net
http://twitter.com/nevdull77


 Hi Patrik,
PHP coders sometimes don't use closing tags since they are optional. If we
match closing tags in these files, the script will incorrectly report that
a host is not vulnerable.
Check out:
http://php.net/manual/en/language.basic-syntax.instruction-separation.php
 http://phpstarter.net/2009/01/omit-the-php-closing-tag/

Cheers!


--
Paulino Calderón Pale
Website: http://calderonpale.com
Twitter: http://twitter.com/calderpwn


Ok, thanks.

//Patrik

-- 
Patrik Karlsson
http://www.cqure.net
http://twitter.com/nevdull77
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