A Cross-site scripting (XSS) vulnerability in the function encryptpassword() in login.tmpl.php in ATutor 2.2.1 allows remote attackers to inject arbitrary web script or HTML via the token parameter.

Directory Traversal exists in ATutor before 2.2.2 via the icon parameter to /mods/core/courses/users/createcourse.php. The attacker can read an arbitrary file by visiting getcourseicon.php?id= after the traversal attack.

SQL injection vulnerability in include/lib/mysqlconnect.inc.php in ATutor 2.2.1 allows remote attackers to execute arbitrary SQL commands via the searchFriends function to friends.inc.php.

ATutor versions 2.2.1 and earlier are vulnerable to an incorrect access control check vulnerability in the Social Application component resulting in privilege escalation. ATutor versions 2.2.1 and earlier are vulnerable to an incorrect access control check vulnerability in the Module component resulting in privilege escalation. ATutor versions 2.2.1 and earlier are vulnerable to a incorrect access control check vulnerability in the Alternative Content component resulting in privilege escalation.

ATutor version 2.2.1 and earlier are vulnerable to a SQL injection in the Assignment Dropbox, BasicLTI, Blog Post, Blog, Group Course Email, Course Alumni, Course Enrolment, Group Membership, Course unenrolment, Course Enrolment List Search, Glossary, Social Group Member Search, Social Friend Search, Social Group Search, File Comment, Gradebook Test Title, User Group Membership, Inbox/Sent Items, Sent Messages, Links, Photo Album, Poll, Social Application, Social Profile, Test, Content Menu, Auto-Login, and Gradebook components resulting in information disclosure, database modification, or potential code execution.

ATutor versions 2.2.1 and earlier are vulnerable to a directory traversal and file extension check bypass in the Course component resulting in code execution. ATutor versions 2.2.1 and earlier are vulnerable to a directory traversal vulnerability in the Course Icon component resulting in information disclosure.

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.