Description
Opencast is an Open Source Lecture Capture & Video Management for Education. Opencast versions prior to 9.10 allow HTTP method spoofing, allowing to change the assumed HTTP method via URL parameter. This allows attackers to turn HTTP GET requests into PUT requests or an HTTP form to send DELETE requests. This bypasses restrictions otherwise put on these types of requests and aids in cross-site request forgery (CSRF) attacks, which would otherwise not be possible. The vulnerability allows attackers to craft links or forms which may change the server state. This issue is fixed in Opencast 9.10 and 10.0. You can mitigate the problem by setting the `SameSite=Strict` attribute for your cookies. If this is a viable option for you depends on your integrations. We strongly recommend updating in any case.
Remediation
References
https://github.com/opencast/opencast/security/advisories/GHSA-j4mm-7pj3-jf7v
https://github.com/opencast/opencast/commit/8f8271e1085f6f8e306c689d6a56b0bb8d076444
https://github.com/opencast/opencast/commit/59cb6731067283e54f15462be38b6117d8b9ea8b#diff-9c5fb3d1b7e3b0f54bc5c4182965c4fe1f9023d449017cece3005d3f90e8e4d8
Related Vulnerabilities
CVE-2020-14966 Vulnerability in maven package org.webjars.bower:jsrsasign
CVE-2018-20834 Vulnerability in npm package tar
CVE-2021-44906 Vulnerability in npm package minimist
CVE-2020-14968 Vulnerability in npm package jsrsasign
CVE-2023-45135 Vulnerability in maven package org.xwiki.platform:xwiki-platform-web-templates