A vulnerability was found in Moodle where users with Log in as capability in a course context (typically, course managers) may gain access to some site administration capabilities by logging in as a System manager. This affects 3.9 to 3.9.1, 3.8 to 3.8.4, 3.7 to 3.7.7, 3.5 to 3.5.13 and earlier unsupported versions. This is fixed in 3.9.2, 3.8.5, 3.7.8 and 3.5.14.
The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Moodle | Moodle | 3.5.0 (including) | 3.5.14 (excluding) |
| Moodle | Moodle | 3.7.0 (including) | 3.7.8 (excluding) |
| Moodle | Moodle | 3.8.0 (including) | 3.8.5 (excluding) |
| Moodle | Moodle | 3.9.0 (including) | 3.9.2 (excluding) |
| Moodle | Ubuntu | bionic | * |
| Moodle | Ubuntu | trusty | * |
| Moodle | Ubuntu | xenial | * |
Access control involves the use of several protection mechanisms such as:
When any mechanism is not applied or otherwise fails, attackers can compromise the security of the product by gaining privileges, reading sensitive information, executing commands, evading detection, etc. There are two distinct behaviors that can introduce access control weaknesses: