CVE-2020-25627 Moodle stored Cross-site Scripting (XSS)
Attackers can inject malicious scripts via user profile fields, potentially stealing sessions or executing code in victim browsers.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2020-25627?
CVE-2020-25627 is a medium-severity cross-site scripting vulnerability in Moodle Moodle, published on 9 Dec 2020. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
The moodlenetprofile user profile field required extra sanitizing to prevent a stored XSS risk. This affects versions 3.9 to 3.9.1. Fixed in 3.9.2.
Weakness: CWE-79
Which versions are affected by CVE-2020-25627?
3 open source packages ship an affected version, including moodle/moodle and moodle. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
moodle/moodle Packagist | From 3.9 | 3.9.2 |
moodle/moodle Packagist | From 3.9 | 3.9.2 |
moodle Bitnami | From 3.9.0 | 3.9.2 |
Products include Moodle Moodle.
How do I fix CVE-2020-25627?
Upgrade moodle/moodle to 3.9.2 or later.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2020-25627 being exploited?
There is no known exploitation of CVE-2020-25627 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Other vulnerabilities in Moodle Moodle
- CVE-2006-4935 File upload in n/a
- CVE-2006-4936 Moodle does not properly validate module instance id
- CVE-2004-2233 Unknown "front page vulnerability with Moodle servers" for Moodle before 1.3.2 has unknown impact and attack vectors.
- CVE-2004-2235 Cross-site scripting in n/a
- CVE-2004-2236 Other in n/a
Sources
Also known as BIT-moodle-2020-25627, GHSA-mgfp-qcf2-pw3m, UBUNTU-CVE-2020-25627.