SECUNIA ADVISORY ID: SA29106 VERIFY ADVISORY: http://secunia.com/advisories/29106/ CRITICAL: Moderately critical IMPACT: System access WHERE: >From remote SOFTWARE: Joomla! 1.x http://secunia.com/product/5788/ DESCRIPTION: Hendrik-Jan Verheij has discovered a vulnerability in Joomla!, which can be exploited by malicious people to compromise a vulnerable system. Input passed to the "mosConfig_absolute_path" parameter in index.php is not properly verified before being used to include files. This can be exploited to include arbitrary files from external resources. Successful exploitation requires that RG_EMULATION is either switched on or undefined. NOTE: Both situations cause security warnings to be displayed in Joomla!'s administration section. The vulnerability is confirmed in Joomla! 1.0.x in versions 1.0.14 and 1.0.13. Prior versions may also be affected. SOLUTION: Joomla! 1.0.x: Update to version 1.0.15. PROVIDED AND/OR DISCOVERED BY: Hendrik-Jan Verheij ORIGINAL ADVISORY: Joomla!: http://www.joomla.org/content/view/4609/1/ Hendrik-Jan Verheij: http://seclists.org/bugtraq/2008/Feb/0207.html