Joomla application is often used as a content management system at various sites, which are known to have enough critical vaunerability. Government sites especially, need to be cautious of this vulnerability.

The bug that allows irresponsible parties access the site administrator based Joomla. Not only access, the administrator password that is used can be changed.
And so, information on how to exploit this weakness has been spread on the internet. Thus, many irresponsible parties can easily use exploit it with the provision information search engine such as Google or yahoo. Some references said the weakness lies in the Joomla version 1.5. Specifically, the files used to reset (reset) password.

Joomla is the application of Open Source which is often used on government sites and other sites because the organization is relatively easy to operate. However, government sites often careless, so this bug become more vulnerable to the government sites. Joomla.org mentioned that to overcome this bug users need to upgrade their Joomla installation to version 1.5.6. Ironically, the site Joomla.org also had become victims of defacement.