Auth bypass in Thm Feedbacksystem
CVE-2023-27485
thmmniii/fbs-core is an open source feedback system for students. In versions prior to 1.5.3 when querying `subresults`, it is possible to query `subresults` from other users due to insufficient authorisation. This is only possible for logged-in users and it is not possible to associate the subresults with a specific user. This bug was fixed in commit `f1ae67d8bb2`and released with version 1.5.3. Users are advised to upgrade. There are no known workarounds for this issue.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.005 (40.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 41st percentile — 40.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Thm Feedbacksystem
- Thm-Mni-Ii Feedbacksystem — versions < 1.5.3
Weakness classification (CWE)
References
- github.com/thm-mni-ii/feedbacksystem/security/advisories/GHSA-fhq8-p3w6-mmgr (Patch, Third Party Advisory)
- github.com/thm-mni-ii/feedbacksystem/commit/f1ae67d8bb2286a8eb15949038473d41b13… (Patch)
- github.com/thm-mni-ii/feedbacksystem/releases/tag/v1.5.3 (Release Notes)
- thm-mni-ii.github.io/feedbacksystem/api-docs/ (Product)
Frequently asked questions
- What is CVE-2023-27485?
- CVE-2023-27485 is a medium-severity vulnerability in Thm Feedbacksystem, classified under Incorrect Authorization. CVSS score: 4.3/10. Published 2023-03-07.
- How severe is CVE-2023-27485?
- Medium severity. CVSS v3 base score is 4.3 out of 10.