CVE-2021-43807highCWE-290

CVE-2021-43807: high-severity vulnerability in opencast

HTTP Method Spoofing in Opencast

Published · Updated

Follow this CVE+ Monitor opencast+ Monitor org.opencastproject:opencast-common

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 7.5epss 1.5%
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.
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Affected products
opencast · opencast
Related CVEs — opencast

In the same product, most dangerous first.

CVE-2021-43821CRITICALFiles Accessible to External Parties in OpencastEPSS 2.0%CVE-2020-5206HIGHAuthentication Bypass For Endpoints With Anonymous Access in OpenCastEPSS 1.3%CVE-2021-32623HIGHOpencast vulnerable to billion laughs attack (XML bomb)EPSS 1.3%CVE-2020-5230HIGHOpencast uses unsafe identifiersEPSS 1.2%CVE-2020-5228HIGHOpencast allows unauthorized public access via OAI-PMHEPSS 1.0%CVE-2020-5222MEDIUMHard-Coded Key Used For Remember-me Token in OpenCastEPSS 0.9%