CVE-2018-1043 Moodle Setting for blocked hosts list can be bypassed with multiple A record hostnames
Attackers can bypass the blocked hosts list in Moodle using multiple A record hostnames, potentially enabling Server-Side Request Forgery attacks.
- 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-2018-1043?
CVE-2018-1043 is a medium-severity server-side request forgery vulnerability in Moodle Moodle, published on 22 Jan 2018. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
In Moodle 3.x, the setting for blocked hosts list can be bypassed with multiple A record hostnames.
Which versions are affected by CVE-2018-1043?
6 open source packages ship an affected version, including moodle/moodle. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
moodle/moodle Packagist | From 3.2 | 3.2.7 |
moodle/moodle Packagist | From 3.2 | 3.2.7 |
moodle/moodle Packagist | From 3.3 | 3.3.4 |
moodle/moodle Packagist | From 3.3 | 3.3.4 |
moodle/moodle Packagist | From 3.4 | 3.4.1 |
moodle/moodle Packagist | From 3.4 | 3.4.1 |
Products include Moodle Moodle.
How do I fix CVE-2018-1043?
Upgrade moodle/moodle to a fixed version for your release line: 3.2.7, 3.3.4 or 3.4.1.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2018-1043 being exploited?
There is no known exploitation of CVE-2018-1043 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-hpwm-84h5-vqr8, UBUNTU-CVE-2018-1043.