CVE-2014-7831 Moodle exposes hidden grades to students
Authenticated students can view hidden grades due to missing capability checks in the get_grades web service.
- 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-2014-7831?
CVE-2014-7831 is a medium-severity missing authorization vulnerability in Moodle Moodle, published on 24 Nov 2014. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
lib/classes/grades_external.php in Moodle 2.7.x before 2.7.3 does not consider the moodle/grade:viewhidden capability before displaying hidden grades, which allows remote authenticated users to obtain sensitive information by leveraging the student role to access the get_grades web service.
Weakness: CWE-200
Which versions are affected by CVE-2014-7831?
2 open source packages ship an affected version, including moodle/moodle. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
moodle/moodle Packagist | From 2.7.0 | 2.7.3 |
moodle/moodle Packagist | From 2.7.0 | 2.7.3 |
Products include Moodle Moodle.
How do I fix CVE-2014-7831?
Upgrade moodle/moodle to 2.7.3 or later.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2014-7831 being exploited?
There is no known exploitation of CVE-2014-7831 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-59j6-8g7w-prf7.