An Access Control vulnerability exists in ATutor 2.2.4 in passwordreminder.php when the g, id, h, formpasswordhidden, and formchange HTTP POST parameters are set.

A reflected cross site scripting (XSS) vulnerability in the /header.tmpl.php component of ATutor 2.2.4 allows attackers to execute arbitrary web scripts or HTML via a crafted payload.

In ATutor 2.2.4, an unauthenticated attacker can change the application settings and force it to use his crafted database, which allows him to gain access to the application. Next, he can change the directory that the application uploads files to, which allows him to achieve remote code execution. This occurs because install/include/header.php does not restrict certain changes (to dbhost, dblogin, dbpassword, and contentdir) within install/include/step5.php.

ATutor 2.2.4 allows Arbitrary File Upload and Directory Traversal, resulting in remote code execution via a ".." pathname in a ZIP archive to the mods/core/languages/languageimport.php (aka Import New Language) or mods/standard/patcher/indexadmin.php (aka Patcher) component.

ATutor through 2.2.4 is vulnerable to arbitrary file uploads via the mods/core/backups/upload.php (aka backup) component. This may result in remote command execution. An attacker can use the instructor account to fully compromise the system using a crafted backup ZIP archive. This will allow for PHP files to be written to the web root, and for code to execute on the remote server.

An issue was discovered in ATutor through 2.2.4. It allows the user to run commands on the server with the teacher user privilege. The Upload Files section in the File Manager field contains an arbitrary file upload vulnerability via upload.php. The $IllegalExtensions value only lists lowercase (and thus .phP is a bypass), and omits .shtml and .phtml.