CVE-2014-9059 Moodle does not provide charset information in HTTP headers

What is CVE-2014-9059?

CVE-2014-9059 is a medium-severity cross-site scripting vulnerability in Moodle Moodle, published on 24 Nov 2014. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

lib/setup.php in Moodle through 2.4.11, 2.5.x before 2.5.9, 2.6.x before 2.6.6, and 2.7.x before 2.7.3 does not provide charset information in HTTP headers, which might allow remote attackers to conduct cross-site scripting (XSS) attacks via UTF-7 characters during interaction with AJAX scripts.

Weakness: CWE-79

Which versions are affected by CVE-2014-9059?

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

Products include Moodle Moodle.

How do I fix CVE-2014-9059?

Upgrade moodle/moodle to a fixed version for your release line: 2.5.9, 2.6.6 or 2.7.3.

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-2014-9059 being exploited?

There is no known exploitation of CVE-2014-9059 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-crcq-pw8h-9xwf.