CVE-2024-33998 moodle: stored XSS via user's name on participants page when opening some options

Medium 5.4 Published Updated

Stored XSS in Moodle allows attackers to execute scripts via user names on the participants page, potentially leading to session hijacking.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Over the internet
Victim action needed
A user has to click or open something
Fix
Available

What is CVE-2024-33998?

CVE-2024-33998 is a medium-severity cross-site scripting vulnerability in Moodle Moodle, published on 31 May 2024. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

Insufficient escaping of participants' names in the participants page table resulted in a stored XSS risk when interacting with some features.

Weakness: CWE-79

Which versions are affected by CVE-2024-33998?

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

PackageAffectedFixed in
moodle/moodle PackagistAll versions4.1.10
moodle/moodle PackagistAll versions4.1.10
moodle/moodle PackagistFrom 4.2.04.2.7
moodle/moodle PackagistFrom 4.2.04.2.7
moodle/moodle PackagistFrom 4.3.04.3.4
moodle/moodle PackagistFrom 4.3.04.3.4
1 more packages
moodle BitnamiAll versions4.1.10, 4.2.7, 4.3.4

Products include Moodle Moodle.

How do I fix CVE-2024-33998?

Upgrade moodle/moodle to a fixed version for your release line: 4.1.10, 4.2.7 or 4.3.4.

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-2024-33998 being exploited?

There is no known exploitation of CVE-2024-33998 in the wild and no public exploit code.

All Moodle Moodle vulnerabilities

Sources

Also known as BIT-moodle-2024-33998, GHSA-xqhh-253w-4q5f, UBUNTU-CVE-2024-33998.

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