Vulnerability · Published Mar 7, 2023 · Assigned by GitHub_M

CVE-2023-27485Insufficient verification of authorisation when accessing subresults in thmmniii/fbs-core

Medium 4.3

In plain English

A medium-severity incorrect authorization in feedbacksystem from thm-mni-ii. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 43% of all known vulnerabilities).

Severity (CVSS 3.1)4.3Medium

Exploit odds (30 days)0.5%top 56.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
thm-mni-ii	feedbacksystem	< 1.5.3

Weakness: CWE-863 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

References

https://github.com/thm-mni-ii/feedbacksystem/security/advisories/GHSA-fhq8-p3w6-mmgr x_refsource_CONFIRM
https://github.com/thm-mni-ii/feedbacksystem/commit/f1ae67d8bb2286a8eb15949038473d41b1358493 x_refsource_MISC
https://github.com/thm-mni-ii/feedbacksystem/releases/tag/v1.5.3 x_refsource_MISC
https://thm-mni-ii.github.io/feedbacksystem/api-docs/#tag/Submission/operation/getCourseTaskSubmissionSubresults x_refsource_MISC