CVE-2019-14883 Moodle Email media URL tokens were not checking for user status

Low 3.7 Published 18 Mar 2020 Updated 5 Aug 2024

Attackers can access inline email attachments from inactive accounts if they possess the file path and token, leading to unauthorized data disclosure.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2019-14883?

CVE-2019-14883 is a low-severity missing authorization vulnerability in Moodle Moodle, published on 18 Mar 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A vulnerability was found in Moodle 3.6 before 3.6.7 and 3.7 before 3.7.3, where tokens used to fetch inline atachments in email notifications were not disabled when a user's account was no longer active. Note: to access files, a user would need to know the file path, and their token.

Weakness: CWE-862, CWE-285

Which versions are affected by CVE-2019-14883?

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

Package	Affected	Fixed in
`moodle/moodle` Packagist	From `3.6`	`3.6.7`
`moodle/moodle` Packagist	From `3.6`	`3.6.7`
`moodle/moodle` Packagist	From `3.7`	`3.7.3`
`moodle/moodle` Packagist	From `3.7`	`3.7.3`

Products include Moodle Moodle.

How do I fix CVE-2019-14883?

Upgrade moodle/moodle to a fixed version for your release line: 3.6.7 or 3.7.3.

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

Is CVE-2019-14883 being exploited?

There is no known exploitation of CVE-2019-14883 in the wild and no public exploit code.

All Moodle Moodle vulnerabilities

Sources

Also known as GHSA-774q-wfcp-vc2q.