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CVE-2021-34418

Pre-auth Null pointer crash in on-premise web console

Published: Nov 11, 2021Updated: Nov 21, 2024 Sources: CVE List NVD BDUCWE-476
4.0MEDIUM
NVD MITRE
EPSS Score
0.6%
Top 52.2%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

Description

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:LAC:LPR:NUI:NS:UC:NI:NA:L
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:LAvailability
Low
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Weaknesses

CWE-476

Affected Products

Zoom Video Communications Inc
commercial·USaka zoom
Zoom On-Premise Meeting Connector
Communications
Zoom On-Premise Meeting Connector MMR
Communications
Zoom On-Premise Recording Connector
Communications
Zoom On-Premise Virtual Room Connector
Communications
Zoom On-Premise Virtual Room Connector Load Balancer
Communications
Zoom Video Communications, Inc.
commercial·USaka zoom
Zoom On-Premise Meeting Connector
Communications
Zoom On-Premise Meeting Connector MMR
Communications
Zoom On-Premise Recording Connector
Communications
Zoom On-Premise Virtual Room Connector Load Balancer
Communications
Zoom On-Premise Virtual Room Connector
Communications
zoom
commercial·USaka rooms, workplace desktop, meeting software development kit
zoom on-premise meeting connector controllerOn-premWeb App
Communications / video-conferencing
zoom on-premise meeting connector mmrOn-prem
Communications / video-conferencing
zoom on-premise recording connectorOn-prem
Communications / video-conferencing
zoom on-premise virtual room connectorOn-prem
Communications / video-conferencing
zoom on-premise virtual room connector load balancerOn-premNetwork Device
Networking Infrastructure / load-balancer-proxy

Exploitability

Official Patch Available

Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

2 techniques
Impact
Initial Access
View detailed technique mapping

References

https://explore.zoom.us/en/trust/security/security-bulletin
explore.zoom.us
https://nvd.nist.gov/vuln/detail/CVE-2021-34418
nvd.nist.gov

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