ATutor 2.2 Cross Site Scripting Vulnerability

ID 1337DAY-ID-24499
Type zdt
Reporter EgiX
Modified 2015-11-05T00:00:00


ATutor versions 2.2 and below suffer from a cross site scripting vulnerability.

ATutor <= 2.2 (popuphelp.php) Reflected Cross-Site Scripting Vulnerability

[-] Software Link:

[-] Affected Versions:

Version 2.2 and prior versions.   

[-] Vulnerability Description:

The vulnerable code is located in the /popuphelp.php script:

26.  if ($_GET['h']) {
27.      $h = $_GET['h'];
29.      if (is_string($_GET['h'])) { // just a AT_HELP code with no prefix
30.          $msg->printHelps($h);

User input passed through the "h" GET parameter is not properly sanitized before
being passed to the "Message::printHelps()" method at line 30. This can be
exploited to carry out reflected Cross-Site Scripting (XSS) attacks.

[-] Solution:

No official solution is currently available.

[-] Disclosure Timeline:

[06/10/2014] - Vendor notified
[09/10/2014] - Vendor response stating this issue has been added to the bug tracker and it is relatively minor
[11/11/2014] - Vendor replied asking for fix suggestions
[11/11/2014] - Fix suggestions have been provided to the vendor
[30/09/2015] - CVE number requested
[05/10/2015] - CVE number assigned
[06/10/2015] - After one year still no official solution available
[04/11/2015] - Public disclosure

[-] CVE Reference:

The Common Vulnerabilities and Exposures project (
has assigned the name CVE-2015-7711 to this vulnerability.

# [2018-02-09]  #