CVE-2020-26234 Information

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

Reference

https://github.com/opencast/opencast/security/advisories/GHSA-44cw-p2hm-gpf6 https://github.com/opencast/opencast/commit/4225bf90af74557deaf8fb6b80b0705c9621acfc

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction Required

LOW

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

HIGH

Base Score

NONE

Base Severity

4.8