CVE-2023-5539 Moodle: authenticated remote code execution risk in lesson

What is CVE-2023-5539?

CVE-2023-5539 is a medium-severity code injection vulnerability in Fedoraproject Extra Packages for Enterprise Linux, published on 9 Nov 2023. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

A remote code execution risk was identified in the Lesson activity. By default this was only available to teachers and managers.

Weakness: CWE-94

Which versions are affected by CVE-2023-5539?

3 open source packages ship an affected version, including moodle/moodle and moodle. It affects 3 products.

Products include Fedoraproject Extra Packages for Enterprise Linux, Fedoraproject Fedora, Moodle Moodle.

How do I fix CVE-2023-5539?

Upgrade moodle/moodle to 4.3.0-rc2 or later.

Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.

Is CVE-2023-5539 being exploited?

There is no known exploitation of CVE-2023-5539 in the wild and no public exploit code.

Other vulnerabilities in Fedoraproject Extra Packages for Enterprise Linux

• CVE-2023-34152 Command injection in ImageMagick Critical 9.8
• CVE-2022-4170 Code injection in rxvt-unicode Critical 9.8
• CVE-2022-40315 Moodle Minor SQL injection risk in admin user browsing Critical 9.8
• CVE-2022-45152 Moodle blind Server-Side Request Forgery (SSRF) vulnerability in LTI provider library Critical 9.1
• CVE-2022-24882 Server side NTLM does not properly check parameters in FreeRDP Critical 9.1

All Fedoraproject Extra Packages for Enterprise Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BIT-moodle-2023-5539, GHSA-3xxm-3g3c-w579, UBUNTU-CVE-2023-5539.