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CVE-2020-5206

8.7 · HIGH

In Opencast before 7.6 and 8.1, using a remember-me cookie with an arbitrary username can cause Opencast to assume proper authentication for that user even if the remember-me cookie was incorrect g…

Published Jan 30, 2020CWE-285EPSS 1.29%

Overview

CVE-2020-5206 is a high-severity vulnerability. It was published on January 30, 2020 and has a CVSS 3.1 base score of 8.7 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.7, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

In Opencast before 7.6 and 8.1, using a remember-me cookie with an arbitrary username can cause Opencast to assume proper authentication for that user even if the remember-me cookie was incorrect given that the attacked endpoint also allows anonymous access. This way, an attacker can, for example, fake a remember-me token, assume the identity of the global system administrator and request non-public content from the search service without ever providing any proper authentication. This problem is fixed in Opencast 7.6 and Opencast 8.1

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/opencast/opencast/commit/b157e1fb3b35991ca7bf59f0730329fbe7ce82e8GitHubgithub.com/opencast/opencast/security/advisories/GHSA-vmm6-w4cf-7f3xGitHubgithub.com/opencast/opencast/commit/b157e1fb3b35991ca7bf59f0730329fbe7ce82e8GitHubgithub.com/opencast/opencast/security/advisories/GHSA-vmm6-w4cf-7f3x

How CyberStrike helps

Frequently asked questions

What is CVE-2020-5206?

CVE-2020-5206 is a high-severity vulnerability. It was published on January 30, 2020 and has a CVSS 3.1 base score of 8.7 (HIGH).

How severe is CVE-2020-5206?

This vulnerability has a CVSS 3.1 base score of 8.7, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2020-5206?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2020-5206?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2020-5206 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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