full-disclosure - Re: Postnuke 0.750 - 0.760rc4 local file inclusion

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Message-ID: <Pine.LNX.4.44.0505161202001.22146-100000@bugsbunny.castlecops.com>
Date: Mon May 16 17:06:09 2005
From: zx at castlecops.com (Paul Laudanski)
Subject: Re: Postnuke 0.750 - 0.760rc4 local file inclusion

On Mon, 16 May 2005, pokley wrote:

> Product : Postnuke 0.750 (http://www.postnuke.com)
> Description: Postnuke 0.750 - 0.760rc4 local file inclusion
> Severity: High
> 
> Proof of concept
> ================
> http://server.com/index.php?module=Blocks&type=lang&func=../../../../../../etc/passwd%00
> 
> Fix
> ===
> Fix Available from postnuke cvs since 5th May 2005
> 
> http://cvs.postnuke.com/viewcvs.cgi/Historic_PostNuke_Library/postnuke-devel/html/includes/pnMod.php.diff?r1=1.47&r2=1.48

Directory traversal in a PHP environment can be avoided in a few different 
ways:

1) Proper programming practice,
2) Usage of http://php.net/basename,
3) Install modsecurity and prevent path traversal,
4) Disable globals in php.ini.

-- 
Sincerely,

Paul Laudanski .. Computer Cops, LLC.
Microsoft MVP Windows-Security 2005
CastleCops(SM)... http://castlecops.com
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