CVE-2024-28593 Cross-site Scripting in Moodle Chat
Students can inject malicious HTML or images in Moodle Chat, potentially causing code execution or performance degradation.
- 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-2024-28593?
CVE-2024-28593 is a medium-severity cross-site scripting vulnerability in Moodle Moodle, published on 22 Mar 2024. 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 Chat activity in Moodle 4.3.3 allows students to insert a potentially unwanted HTML A element or IMG element, or HTML content that leads to a performance degradation. NOTE: the vendor's Using_Chat page says "If you know some HTML code, you can use it in your text to do things like insert images, play sounds or create different coloured and sized text." This page also says "Chat is due to be removed from standard Moodle."
Weakness: CWE-94
Which versions are affected by CVE-2024-28593?
3 open source packages ship an affected version, including moodle/moodle and moodle. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
moodle/moodle Packagist | All versions to 4.3.3 | None |
moodle/moodle Packagist | All versions to 4.3.3 | None |
moodle Bitnami | From 4.3.3 | 4.3.4 |
Products include Moodle Moodle.
How do I fix CVE-2024-28593?
Apply the vendor's patch.
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-2024-28593 being exploited?
There is no known exploitation of CVE-2024-28593 in the wild and no public exploit code.
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-2024-28593, GHSA-f6mh-79vh-2hv7, UBUNTU-CVE-2024-28593.