CVE-2023-5550: Moodle: rce due to lfi risk in some misconfigured shared hosting environments
First published: Thu Oct 12 2023(Updated: )
In a shared hosting environment that has been misconfigured to allow access to other users' content, a Moodle user who also has direct access to the web server outside of the Moodle webroot could utilise a local file include to achieve remote code execution.
Credit: patrick@puiterwijk.org patrick@puiterwijk.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/moodle | <4.2.3 | 4.2.3 |
| redhat/moodle | <4.1.6 | 4.1.6 |
| redhat/moodle | <4.0.11 | 4.0.11 |
| redhat/moodle | <3.11.17 | 3.11.17 |
| redhat/moodle | <3.9.24 | 3.9.24 |
| Moodle Moodle | <3.9.24 | |
| Moodle Moodle | >=3.11.0<3.11.17 | |
| Moodle Moodle | >=4.0.0<4.0.11 | |
| Moodle Moodle | >=4.1.0<4.1.6 | |
| Moodle Moodle | >=4.2.0<4.2.3 | |
| Fedoraproject Extra Packages For Enterprise Linux | =7.0 | |
| Fedoraproject Fedora | =38 | |
| composer/moodle/moodle | <3.9.24 | 3.9.24 |
| composer/moodle/moodle | >=3.10.0<3.11.17 | 3.11.17 |
| composer/moodle/moodle | >=4.0.0<4.0.11 | 4.0.11 |
| composer/moodle/moodle | >=4.1.0<4.1.6 | 4.1.6 |
| composer/moodle/moodle | >=4.2.0<4.2.3 | 4.2.3 |
| composer/moodle/moodle | >=4.3.0-beta<4.3.0-rc2 | 4.3.0-rc2 |
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Reference Links
- https://moodle.org/mod/forum/discuss.php?d=451591
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2244921
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2244922
- https://bugzilla.redhat.com/show_bug.cgi?id=2243452
- http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-72249
- https://nvd.nist.gov/vuln/detail/CVE-2023-5550
- https://github.com/moodle/moodle/commit/77766f9c8af8fc8d861d7ac09ce4e1f6e72faca7
- https://github.com/advisories/GHSA-5cvx-cwpx-9rjh (Advisory)
Frequently Asked Questions
What is CVE-2023-5550?
CVE-2023-5550 is a vulnerability that allows remote code execution in misconfigured shared hosting environments.
What is the severity of CVE-2023-5550?
CVE-2023-5550 has a severity rating of 9.8 (critical).
How can CVE-2023-5550 be exploited?
CVE-2023-5550 can be exploited through a local file include vulnerability in a misconfigured shared hosting environment.
Which versions of Moodle are affected by CVE-2023-5550?
Versions up to and including Moodle 4.2.3 are affected by CVE-2023-5550.
How can I fix CVE-2023-5550?
To fix CVE-2023-5550, update Moodle to version 4.2.4 or later.
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