CVE-2020-5231: Opencast users with ROLE_COURSE_ADMIN can create new users
In Opencast before 7.6 and 8.1, users with the role ROLECOURSEADMIN can use the user-utils endpoint to create new users not including the role ROLEADMIN. ROLECOURSEADMIN 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.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Opencastto a version that resolves this vulnerability.Fixed in 7.6 - Upgrade
Upgrade
Opencastto a version that resolves this vulnerability.Fixed in 8.1
Event History
Frequently Asked Questions
What is the vulnerability ID of this Opencast vulnerability?
The vulnerability ID of this Opencast vulnerability is CVE-2020-5231.
What is the severity of CVE-2020-5231?
The severity of CVE-2020-5231 is medium with a CVSS score of 6.5.
What is the affected software for CVE-2020-5231?
The affected software for CVE-2020-5231 is Apereo Opencast versions up to 7.6 and version 8.0.
What is the CWE category for CVE-2020-5231?
The CWE category for CVE-2020-5231 is CWE-276 and CWE-285.
How can I fix CVE-2020-5231?
To fix CVE-2020-5231, update your Opencast to version 7.6 or above, or version 8.1 or above.