- Vulnerabilities 87,061
OpenCast < 9.6 DoS Vulnerability
Published: 2021-06-17 07:51:11
CVE Author: NIST National Vulnerability Database
CVSS Base Vector:
AV:N/AC:L/Au:S/C:N/I:N/A:C
Detection Type:
Remote Banner
Solution Type:
Vendor Patch
Summary:
OpenCast is prone to a denial of service (DoS) vulnerability.
Detection Method:
Checks if a vulnerable version is present on the target host.
Technical Details:
Opencast is vulnerable to a so called 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.
Impact:
Successful exploitation will lead to a denial of service,
affecting the whole application.
Affected Versions:
OpenCast prior to version 9.6.
Recommendations:
Update to version 9.6 or later.
https://nvd.nist.gov/vuln/detail/CVE-2021-32623
https://github.com/opencast/opencast/security/advisories/GHSA-9gwx-9cwp-5c2m
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