Pre-auth Null pointer crash in on-premise web console
CVE-2021-34418

4MEDIUM

Key Information:

Vendor
Zoom
Status
Zoom On-premise Meeting Connector
Zoom On-premise Meeting Connector Mmr
Zoom On-premise Recording Connector
Zoom On-premise Virtual Room Connector
Vendor
CVE Published:
11 November 2021

Summary

The login routine of the web console in the Zoom On-Premise Meeting Connector before version 4.6.239.20200613, Zoom On-Premise Meeting Connector MMR before version 4.6.239.20200613, Zoom On-Premise Recording Connector before version 3.8.42.20200905, Zoom On-Premise Virtual Room Connector before version 4.4.6344.20200612, and Zoom On-Premise Virtual Room Connector Load Balancer before version 2.5.5492.20200616 fails to validate that a NULL byte was sent while authenticating. This could lead to a crash of the login service.

Affected Version(s)

Zoom On-Premise Meeting Connector < 4.6.239.20200613

Zoom On-Premise Meeting Connector MMR < 4.6.239.20200613

Zoom On-Premise Recording Connector < 3.8.42.20200905

References

https://explore.zoom.us/en/trust/security/security-bulletin
x_refsource_MISC

CVSS V3.1

Score:
4
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Jeremy Brown
.