CVE-2021-21318

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Summary

CVECVE-2021-21318
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-02-18 18:15:00 UTC
Updated2021-02-26 04:04:00 UTC
DescriptionOpencast is a free, open-source platform to support the management of educational audio and video content. In Opencast before version 9.2 there is a vulnerability in which publishing an episode with strict access rules will overwrite the currently set series access. This allows for an easy denial of access for all users without superuser privileges, effectively hiding the series. Access to series and series metadata on the search service (shown in media module and player) depends on the events published which are part of the series. Publishing an event will automatically publish a series and update access to it. Removing an event or republishing the event should do the same. Affected versions of Opencast may not update the series access or remove a published series if an event is being removed. On removal of an episode, this may lead to an access control list for series metadata with broader access rules than the merged access rules of all remaining events, or the series metadata still being available although all episodes of that series have been removed. This problem is fixed in Opencast 9.2.

Risk And Classification

Problem Types: CWE-863

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Apereo Opencast All All All All
Application Apereo Opencast All All All All

References

ReferenceSourceLinkTags
Fix Engage Series Publication and Access · opencast/opencast@b18c6a7 · GitHub MISC github.com Patch, Third Party Advisory
Removing access may not effect published series · Advisory · opencast/opencast · GitHub CONFIRM github.com Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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