CVE-2011-4293 Moodle Double-Caches Content, Potentially Writing to a File System's Tmp Directory

What is CVE-2011-4293?

CVE-2011-4293 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

The theme implementation in Moodle 2.0.x before 2.0.4 and 2.1.x before 2.1.1 triggers duplicate caching of Cascading Style Sheets (CSS) and JavaScript content, which allows remote attackers to bypass intended access restrictions and write to an operating-system temporary directory via unspecified vectors.

Weakness: CWE-264

Which versions are affected by CVE-2011-4293?

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

Products include Moodle Moodle.

How do I fix CVE-2011-4293?

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-2011-4293 being exploited?

There is no known exploitation of CVE-2011-4293 in the wild and no public exploit code.

Other vulnerabilities in Moodle Moodle

• CVE-2006-4935 File upload in n/a Critical 10.0
• CVE-2006-4936 Moodle does not properly validate module instance id Critical 10.0
• CVE-2004-2233 Unknown "front page vulnerability with Moodle servers" for Moodle before 1.3.2 has unknown impact and attack vectors. Critical 10.0
• CVE-2004-2235 Cross-site scripting in n/a Critical 10.0
• CVE-2004-2236 Other in n/a Critical 10.0

All Moodle Moodle vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-wxvp-8q8h-r6rr.