Vulnerabilities > CVE-2021-32623 - Unspecified vulnerability in Apereo Opencast
Attack vector
NETWORK Attack complexity
LOW Privileges required
LOW Confidentiality impact
NONE Integrity impact
NONE Availability impact
HIGH Summary
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.
Vulnerable Configurations
References
- https://github.com/opencast/opencast/commit/8ae27da5a6f658011a5741b3210e715b0dc6213e
- https://github.com/opencast/opencast/commit/8ae27da5a6f658011a5741b3210e715b0dc6213e
- https://github.com/opencast/opencast/security/advisories/GHSA-9gwx-9cwp-5c2m
- https://github.com/opencast/opencast/security/advisories/GHSA-9gwx-9cwp-5c2m