High severity · published Jan 30, 2020
CVE-2020-5228
Opencast before 8.1 and 7.6 allows unauthorized public access to all media and metadata by default via OAI-PMH
7.5
CVSS
1%
EPSS
No
On KEV
Description
Opencast before 8.1 and 7.6 allows unauthorized public access to all media and metadata by default via OAI-PMH. OAI-PMH is part of the default workflow and is activated by default, requiring active user intervention of users to protect media. This leads to users unknowingly handing out public access to events without their knowledge. The problem has been addressed in Opencast 7.6 and 8.1 where the OAI-PMH endpoint is configured to require users with `ROLE_ADMIN` by default. In addition to this, Opencast 9 removes the OAI-PMH publication from the default workflow, making the publication a conscious decision users have to make by updating their workflows.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.0% · higher than 62% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OP
Opencast · Apereo
before 7.6; 8.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-5228
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-5228
Patch
https://github.com/opencast/opencast/blob/1fb812c7810c78f09f29a7f455ff920417924307/etc/security/mh_default_org.xml#L271-L276
Mitigation
https://github.com/opencast/opencast/security/advisories/GHSA-6f54-3qr9-pjgj
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