Vulnerability Description
Opencast is a free and open source solution for automated video capture and distribution. Versions of Opencast prior to 9.6 are vulnerable to the billion laughs attack, which allows an attacker to easily execute a (seemingly permanent) denial of service attack, essentially taking down Opencast using a single HTTP request. To exploit this, users need to have ingest privileges, limiting the group of potential attackers The problem has been fixed in Opencast 9.6. There is no known workaround for this issue.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Apereo | Opencast | < 9.6 |
Related Weaknesses (CWE)
References
- https://github.com/opencast/opencast/commit/8ae27da5a6f658011a5741b3210e715b0dc6PatchThird Party Advisory
- https://github.com/opencast/opencast/security/advisories/GHSA-9gwx-9cwp-5c2mExploitThird Party Advisory
- https://github.com/opencast/opencast/commit/8ae27da5a6f658011a5741b3210e715b0dc6PatchThird Party Advisory
- https://github.com/opencast/opencast/security/advisories/GHSA-9gwx-9cwp-5c2mExploitThird Party Advisory
FAQ
What is CVE-2021-32623?
CVE-2021-32623 is a vulnerability with a CVSS score of 8.1 (HIGH). Opencast is a free and open source solution for automated video capture and distribution. Versions of Opencast prior to 9.6 are vulnerable to the billion laughs attack, which allows an attacker to eas...
How severe is CVE-2021-32623?
CVE-2021-32623 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-32623?
Check the references section above for vendor advisories and patch information. Affected products include: Apereo Opencast.