CVE-2024-43433 Moodle: matrix user/power level management not always working as expected with suspended users

What is CVE-2024-43433?

CVE-2024-43433 is a medium-severity missing authorization vulnerability in Moodle Moodle, published on 11 Nov 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A flaw was found in moodle. Matrix room membership and power levels are incorrectly applied and revoked for suspended Moodle users.

Weakness: CWE-863

Which versions are affected by CVE-2024-43433?

5 open source packages ship an affected version, including moodle/moodle and moodle. It affects 1 product.

Products include Moodle Moodle.

How do I fix CVE-2024-43433?

Upgrade moodle/moodle to a fixed version for your release line: 4.3.6 or 4.4.2.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2024-43433 being exploited?

There is no known exploitation of CVE-2024-43433 in the wild and no public exploit code.

Other vulnerabilities in Moodle Moodle

• CVE-2006-4935 File upload in n/a Critical 10.0
• CVE-2006-4936 Moodle does not properly validate module instance id Critical 10.0
• CVE-2004-2233 Unknown "front page vulnerability with Moodle servers" for Moodle before 1.3.2 has unknown impact and attack vectors. Critical 10.0
• CVE-2004-2235 Cross-site scripting in n/a Critical 10.0
• CVE-2004-2236 Other in n/a Critical 10.0

All Moodle Moodle vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BIT-moodle-2024-43433, GHSA-q99x-mjmh-v8w7, UBUNTU-CVE-2024-43433.