Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2021-43807

Opencast is an Open Source Lecture Capture & Video Management for Education. Opencast versions prior to 9.10 allow HTTP method spoofing, allowing to change the assumed HTTP method via URL parameter. This allows attackers to turn HTTP GET requests into PUT requests or an HTTP form to send DELETE requests. This bypasses restrictions otherwise put on these types of requests and aids in cross-site request forgery (CSRF) attacks, which would otherwise not be possible. The vulnerability allows attackers to craft links or forms which may change the server state. This issue is fixed in Opencast 9.10 and 10.0. You can mitigate the problem by setting the `SameSite=Strict` attribute for your cookies. If this is a viable option for you depends on your integrations. We strongly recommend updating in any case.

Published

2021-12-14T18:15:08.573

Last Modified

2024-11-21T06:29:50.003

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.5 (HIGH)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:N/I:P/A:N

Access Vector: NETWORK
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: PARTIAL
Availability Impact: NONE

Exploitability Score

8.6

Impact Score

2.9

Weaknesses

Type: Secondary
CWE-290

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	apereo	opencast	< 9.10	Yes

References

https://github.com/opencast/opencast/commit/59cb6731067283e54f15462be38b6117d8b9ea8b#diff-9c5fb3d1b7e3b0f54bc5c4182965c4fe1f9023d449017cece3005d3f90e8e4d8 Patch, Third Party Advisory ([email protected])
https://github.com/opencast/opencast/commit/8f8271e1085f6f8e306c689d6a56b0bb8d076444 Patch, Third Party Advisory ([email protected])
https://github.com/opencast/opencast/security/advisories/GHSA-j4mm-7pj3-jf7v Exploit, Patch, Third Party Advisory ([email protected])
https://github.com/opencast/opencast/commit/59cb6731067283e54f15462be38b6117d8b9ea8b#diff-9c5fb3d1b7e3b0f54bc5c4182965c4fe1f9023d449017cece3005d3f90e8e4d8 Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/opencast/opencast/commit/8f8271e1085f6f8e306c689d6a56b0bb8d076444 Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/opencast/opencast/security/advisories/GHSA-j4mm-7pj3-jf7v Exploit, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)