Medium severity · published Dec 8, 2020
CVE-2020-26234
Opencast before versions 8.9 and 7.9 disables HTTPS hostname verification of its HTTP client used for a large portion of Opencast's HTTP requests
4.8
CVSS
0.3%
EPSS
No
On KEV
Description
Opencast before versions 8.9 and 7.9 disables HTTPS hostname verification of its HTTP client used for a large portion of Opencast's HTTP requests. Hostname verification is an important part when using HTTPS to ensure that the presented certificate is valid for the host. Disabling it can allow for man-in-the-middle attacks. This problem is fixed in Opencast 7.9 and Opencast 8.8 Please be aware that fixing the problem means that Opencast will not simply accept any self-signed certificates any longer without properly importing them. If you need those, please make sure to import them into the Java key store. Better yet, get a valid certificate.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
High
Privileges
Low
User interaction
Required
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 20% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OP
Opencast · Apereo
before 7.9; 8.0 before 8.9 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-26234
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-26234
Patch
https://github.com/opencast/opencast/commit/4225bf90af74557deaf8fb6b80b0705c9621acfc
Third Party Advisory
https://github.com/opencast/opencast/security/advisories/GHSA-44cw-p2hm-gpf6
More from Opencast
10.0
CVE-2020-5206
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…
8.8
CVE-2020-5222
Opencast before 7.6 and 8.1 enables a remember-me cookie based on a hash created from the username, password, and an additional system key
8.1
CVE-2020-5229
Opencast before 8.1 stores passwords using the rather outdated and cryptographically insecure MD5 hash algorithm
7.7
CVE-2021-43821
Opencast is an Open Source Lecture Capture & Video Management for Education
7.5
CVE-2024-52797
Opencast is free and open source software for automated video capture and distribution