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CVE-2021-43807

HTTP Method Spoofing in Opencast

Published: Dec 14, 2021Updated: Nov 21, 2024 Sources: CVE List NVD GHSACWE-290
NVD MITRE
7.5CVSSHIGH
EPSS Score
1.4%
Top 30.7%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

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.

CVSS Vector Breakdown

AV:NAC:HPR:NUI:RS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-290

Affected Products

opencastapereo
Mixed
Cloud & SaaS / saas-application
org.opencastproject:opencast-commonMavenOSS Libraries
opencastopencast
On-prem
Communications / video-conferencing
apereooss-projectCloud & SaaSaka opencast, central authentication service, cas, phpcas
mavenpackage-ecosystemOSS Libraries
opencastoss-projectCommunications

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Initial Access
View detailed technique mapping

References

https://github.com/opencast/opencast/commit/59cb6731067283e54f15462be38b6117d8b9ea8b#diff-9c5fb3d1b7e3b0f54bc5c4182965c4fe1f9023d449017cece3005d3f90e8e4d8
github.com
https://github.com/opencast/opencast/commit/8f8271e1085f6f8e306c689d6a56b0bb8d076444
github.com
https://github.com/opencast/opencast/security/advisories/GHSA-j4mm-7pj3-jf7v
github.com
and 2 more references View all →

Timeline

Published
Dec 14, 2021
Last Updated
Nov 21, 2024

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