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Security update : October 23, 2007

Hello,

This morning, after some users reported hacking of their site, the log files they supplied led me to the discovery of a vulnerability in version 1.2.4. t, u and w of my URL rewriting component, sh404SEF. Under a particular set of circumstances, remote code execution was possible. I apologize for the initial error in code which allowed this, and to the webmasters that suffered hacking due to this vulnerability.

I have uploaded some fixed files on Joomlacode .

Here are the details :

A - If you are using version up to and including 1.2.4.s, there is no vulnerability, and you don't need to take any action

B - If you are using version 1.2.4.t or version 1.2.4.u, you need to patch your site : 

    1 - download the appropriate patch file from Joomlacode (sef404_t2.zip for version 1.2.4.t, or sef404_u2.zip for version 1.2.4.u) 
    2 - unzip this file on your local computer. This will give you a sef404.php file
    3 - upload using ftp this new file into the /components/com_sef directory, replacing the existing one

C - if you are using version 1.2.4.w, you can either patch your site, or uninstall/re-install new version w2

Patching your site

    1 - download the appropriate patch file from Joomlacode (sef404_w2.zip) 
    2 - unzip this file on your local computer. This will give you a sef404.php file
    3 - upload using ftp this new file into the /components/com_sef directory, replacing the existing one 

Installing new version

    1 - Download the new version 1.2.4.w2, availaible now from Joomlacode
    2 - using joomla installer, UN-install the current w version from your site
    3 - using Joomla installer, install the new version w2

    All settings and data will be preserved in this process

Very soon I'll be releasing next version of sh404SEF, which has a set of security features to avoid this kind of issues as much as possible, not only in sh404SEF, but in other Joomla extensions.

In the mean time, I hope damages will be limited. I'll be available as much as can be at http:/:extensions.siliana.net to assist you in the upgrade process if needed.

Your sincerely  

shumisha

Comments
Thomas - Thx 27-10-2007 07:05
Thanks for the fast reaction
Thomas
http://www.mtw-office.de
Greg Miller - Thanks for the update! 27-10-2007 12:42
...and the clear details on how to patch it. Thanks.

-Greg
Jason - Patching for Older Version 03-11-2007 13:08
I wanted to know what practice you recommend for patching from version Q. I maintain quite a few sites, and one in particular that has a lot of links. I wanted to know the best practice for installing without uninstalling first.
Popoli - Newsletter 09-11-2007 09:27
Super merci.
L'inscription à une newsletter serait sympa pour avoir cette information notamment concernant cet excellent composant ;-)
phenixgraph - merci 10-11-2007 16:49
merci shumisha, j'espère ne plus avoir de visites non désirées
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