Opencast
CVE-2020-5206
CRITICAL
Severity by source
AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
Lifecycle Timeline
1Blast Radius
ecosystem impact- 23 maven packages depend on org.opencastproject:opencast-kernel (13 direct, 10 indirect)
Ecosystem-wide dependent count for version 8.0.
DescriptionNVD
In Opencast before 7.6 and 8.1, using a remember-me cookie with an arbitrary username can cause Opencast to assume proper authentication for that user even if the remember-me cookie was incorrect given that the attacked endpoint also allows anonymous access. This way, an attacker can, for example, fake a remember-me token, assume the identity of the global system administrator and request non-public content from the search service without ever providing any proper authentication. This problem is fixed in Opencast 7.6 and Opencast 8.1
AnalysisAI
In Opencast before 7.6 and 8.1, using a remember-me cookie with an arbitrary username can cause Opencast to assume proper authentication for that user even if the remember-me cookie was incorrect. Rated critical severity (CVSS 10.0), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Technical ContextAI
This vulnerability is classified under CWE-285. In Opencast before 7.6 and 8.1, using a remember-me cookie with an arbitrary username can cause Opencast to assume proper authentication for that user even if the remember-me cookie was incorrect given that the attacked endpoint also allows anonymous access. This way, an attacker can, for example, fake a remember-me token, assume the identity of the global system administrator and request non-public content from the search service without ever providing any proper authentication. This problem is fixed in Opencast 7.6 and Opencast 8.1 Affected products include: Apereo Opencast. Version information: before 7.6.
RemediationAI
A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.
Opencast is an Open Source Lecture Capture & Video Management for Education. Rated high severity (CVSS 7.7), this vulner
In Opencast 2.2.3 and older if user names overlap, the Opencast search service used for publication to the media modules
Opencast is an Open Source Lecture Capture & Video Management for Education. Rated medium severity (CVSS 6.5), this vuln
Opencast is a free and open source solution for automated video capture and distribution. Rated medium severity (CVSS 6.
In Opencast before 7.6 and 8.1, users with the role ROLE_COURSE_ADMIN can use the user-utils endpoint to create new user
Opencast 2.3.2 and older versions are vulnerable to script injections through media and metadata in the player and media
Opencast before 7.6 and 8.1 enables a remember-me cookie based on a hash created from the username, password, and an add
Opencast before 8.1 stores passwords using the rather outdated and cryptographically insecure MD5 hash algorithm. Rated
Opencast is free and open source software for automated video capture and distribution. Rated high severity (CVSS 7.5),
Opencast before 8.1 and 7.6 allows almost arbitrary identifiers for media packages and elements to be used. Rated high s
Opencast before 8.1 and 7.6 allows unauthorized public access to all media and metadata by default via OAI-PMH. Rated hi
Opencast is a free, open-source platform to support the management of educational audio and video content. Rated medium
Same weakness CWE-285 – Improper Authorization
View allSame technique Authentication Bypass
View allShare
External POC / Exploit Code
Leaving vuln.today