CVE-2023-5541 Moodle: xss risk when using csv grade import method
An attacker can execute arbitrary scripts in a victim's browser by tricking them into importing a malicious CSV grade file in Moodle.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2023-5541?
CVE-2023-5541 is a low-severity cross-site scripting vulnerability in Moodle Moodle, published on 9 Nov 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
The CSV grade import method contained an XSS risk for users importing the spreadsheet, if it contained unsafe content.
Weakness: CWE-79
Which versions are affected by CVE-2023-5541?
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 | 4.3.0-rc2 |
moodle/moodle Packagist | All versions | 4.3.0-rc2 |
moodle Bitnami | From 3.9.0 | 3.9.24, 3.11.17, 4.0.11, 4.1.6, 4.2.3 |
Products include Moodle Moodle.
How do I fix CVE-2023-5541?
Upgrade moodle/moodle to 4.3.0-rc2 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-2023-5541 being exploited?
There is no known exploitation of CVE-2023-5541 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-2023-5541, GHSA-28gc-4qq5-8q26, UBUNTU-CVE-2023-5541.