Arbitrary file upload in Markusproject Markus
CVE-2024-51499
MarkUs is a web application for the submission and grading of student assignments. In versions prior to 2.4.8, an arbitrary file write vulnerability accessible via the update_files method of the SubmissionsController allows authenticated users (e.g. students) to write arbitrary files to any location on the web server MarkUs is running on (depending on the permissions of the underlying filesystem). e.g. This can lead to a delayed remote code execution in case an attacker is able to write a Ruby file into the config/initializers/ subfolder of the Ruby on Rails application. MarkUs v2.4.8 has addressed this issue. No known workarounds are available at the application level aside from upgrading.
Vulnerability class: Unrestricted File Upload
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.007 (51.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 51.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
- Markusproject Markus — versions < 2.4.8
Weakness classification (CWE)
References
- github.com/MarkUsProject/Markus/security/advisories/GHSA-j95p-7936-f75w (Third Party Advisory)
- github.com/MarkUsProject/Markus/pull/7026 (Patch)
Frequently asked questions
- What is CVE-2024-51499?
- CVE-2024-51499 is a high-severity vulnerability in Markusproject Markus, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 8.8/10. Published 2024-11-18.
- How severe is CVE-2024-51499?
- High severity. CVSS v3 base score is 8.8 out of 10.