CVE-2021-32623

    Dashboard / Vulnerabilities / CVE-2021-32623

    CVE-2021-32623

    Published: 16 Jun 2021Last Modified: 9 Jul 2026

    Summary:

    Details: 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.

    References: https://github.com/opencast/opencast/commit/8ae27da5a6f658011a5741b3210e715b0dc6213e, https://github.com/opencast/opencast/security/advisories/GHSA-9gwx-9cwp-5c2m

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -17f54e0f7060759ab7e9a68e18c7be9941774b4d

    Affected versions

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2021-32623 | CVE-DB