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CVE-2020-5231

Opencast users with ROLE_COURSE_ADMIN can create new users

Published: Jan 30, 2020Updated: Nov 21, 2024 Sources: CVE List NVD GHSACWE-285
NVD MITRE
4.8CVSSMEDIUM
EPSS Score
0.6%
Top 54.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

In Opencast before 7.6 and 8.1, users with the role ROLE_COURSE_ADMIN can use the user-utils endpoint to create new users not including the role ROLE_ADMIN. ROLE_COURSE_ADMIN is a non-standard role in Opencast which is referenced neither in the documentation nor in any code (except for tests) but only in the security configuration. From the name – implying an admin for a specific course – users would never expect that this role allows user creation. This issue is fixed in 7.6 and 8.1 which both ship a new default security configuration.

CVSS Vector Breakdown

AV:NAC:LPR:HUI:RS:CC:LI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:HPrivileges Required
High
UI:RUser Interaction
Required
Scope
S:CScope
Changed
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:NAvailability
None
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Weaknesses

CWE-285CWE-276

Affected Products

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

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Privilege Escalation
View detailed technique mapping

References

https://github.com/opencast/opencast/security/advisories/GHSA-94qw-r73x-j7hg
github.com
https://github.com/opencast/opencast/commit/72fad0031d8a82c860e2bde0b27570c5042320ee
github.com
https://nvd.nist.gov/vuln/detail/CVE-2020-5231
nvd.nist.gov

Timeline

Published
Jan 30, 2020
Last Updated
Nov 21, 2024

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