CVE-2011-4297 Moodle does not properly restrict comment capabilities

Medium 6.4 Published Updated

Remote attackers with guest access can post comments on front-page activities due to improper capability restrictions in Moodle.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is CVE-2011-4297?

CVE-2011-4297 is a medium-severity missing authorization vulnerability in Moodle Moodle, published on 16 Jul 2012. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

comment/lib.php in Moodle 2.0.x before 2.0.4 and 2.1.x before 2.1.1 does not properly restrict comment capabilities, which allows remote attackers to post a comment by leveraging the guest role and operating on a front-page activity.

Weakness: CWE-264

Which versions are affected by CVE-2011-4297?

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

PackageAffectedFixed in
moodle/moodle PackagistFrom 2.0.02.0.4
moodle/moodle PackagistFrom 2.0.02.0.4
moodle/moodle PackagistFrom 2.1.02.1.1
moodle/moodle PackagistFrom 2.1.02.1.1

Products include Moodle Moodle.

How do I fix CVE-2011-4297?

Upgrade moodle/moodle to a fixed version for your release line: 2.0.4 or 2.1.1.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2011-4297 being exploited?

There is no known exploitation of CVE-2011-4297 in the wild and no public exploit code.

All Moodle Moodle vulnerabilities

Sources

Also known as GHSA-62wv-866c-rh86.

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