CVE-2020-5231
Last modified
CVE-2020-5231 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. In Opencast before 7.6 and 8.1, users with the role ROLE_COURSE_ADMIN can use the user-utils endpoint to create new users not including the role ROLE_ADMIN. ROLE_COURSE_ADMIN is a non-standard role in Opencast which is referenced neither in the documentation nor in any code (except for tests) but only in the security configuration. EPSS estimates a 0.63% chance of exploitation in the next 30 days.
Description
In Opencast before 7.6 and 8.1, users with the role ROLE_COURSE_ADMIN can use the user-utils endpoint to create new users not including the role ROLE_ADMIN. ROLE_COURSE_ADMIN is a non-standard role in Opencast which is referenced neither in the documentation nor in any code (except for tests) but only in the security configuration. From the name – implying an admin for a specific course – users would never expect that this role allows user creation. This issue is fixed in 7.6 and 8.1 which both ship a new default security configuration.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Apereo | Opencast | < 7.6 |
| Apereo | Opencast | 8.0 |
References
- https://github.com/opencast/opencast/security/advisories/GHSA-94qw-r73x-j7hgExploit, Third Party Advisory
- https://github.com/opencast/opencast/security/advisories/GHSA-94qw-r73x-j7hgExploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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