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

What is CVE-2021-34418?

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:

Severity:

MEDIUM

Confidentiality:

None

Integrity:

None

Availability:

None

Attack Vector:

Local

Attack Complexity:

Low

Privileges Required:

None

User Interaction:

None

Scope:

Unchanged

Download the Critical Vulnerability Management Cheat Sheet

Timeline

Vulnerability published
Nov 11, 2021
Vulnerability Reserved
Jun 9, 2021

Credit

Jeremy Brown