CVE-2013-4523 Cross-site scripting in n/a
Authenticated users can inject arbitrary scripts into Moodle messages, potentially compromising other users' sessions.
- 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-2013-4523?
CVE-2013-4523 is a low-severity cross-site scripting vulnerability in Moodle Moodle, published on 26 Nov 2013. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Cross-site scripting (XSS) vulnerability in message/lib.php in Moodle through 2.2.11, 2.3.x before 2.3.10, 2.4.x before 2.4.7, and 2.5.x before 2.5.3 allows remote authenticated users to inject arbitrary web script or HTML via a crafted message.
Weakness: CWE-79
Which versions are affected by CVE-2013-4523?
It affects 1 product.
Products include Moodle Moodle.
How do I fix CVE-2013-4523?
Upgrade to a fixed version.
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-2013-4523 being exploited?
There is no known exploitation of CVE-2013-4523 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 GHSA-475h-wv64-r896.