CVE-2020-25698 Improper Access Control in moodle

What is CVE-2020-25698?

CVE-2020-25698 is a high-severity missing authorization vulnerability in Fedoraproject Fedora, published on 19 Nov 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Users' enrollment capabilities were not being sufficiently checked in Moodle when they are restored into an existing course. This could lead to them unenrolling users without having permission to do so. Versions affected: 3.5 to 3.5.14, 3.7 to 3.7.8, 3.8 to 3.8.5, 3.9 to 3.9.2 and earlier unsupported versions. Fixed in 3.9.3, 3.8.6, 3.7.9, 3.5.15, and 3.10.

Weakness: CWE-284

Which versions are affected by CVE-2020-25698?

9 open source packages ship an affected version, including moodle/moodle and moodle. It affects 2 products.

Products include Fedoraproject Fedora, Moodle Moodle.

How do I fix CVE-2020-25698?

Upgrade moodle/moodle to a fixed version for your release line: 3.5.15, 3.7.9, 3.8.6 or 3.9.3.

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

Is CVE-2020-25698 being exploited?

There is no known exploitation of CVE-2020-25698 in the wild and no public exploit code.

Other vulnerabilities in Fedoraproject Fedora

• CVE-2024-4577 PHP-CGI OS Command Injection Exploited Critical 9.8
• CVE-2021-39226 Grafana Authentication Bypass Exploited Critical 9.8
• CVE-2019-5544 VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow Exploited Critical 9.8
• CVE-2024-4947 Google Chromium V8 Type Confusion Exploited Critical 9.6
• CVE-2024-4671 Google Chromium Visuals Use-After-Free Exploited Critical 9.6

All Fedoraproject Fedora vulnerabilities

Sources

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

Also known as BIT-moodle-2020-25698, GHSA-vxhx-gmhm-623c, UBUNTU-CVE-2020-25698.