NULL pointer dereference in Zoom On-Premise Meeting Connector Controller
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.
EPSS: 0.006 (45.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.0 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
Affected products
- Zoom Zoom_on-premise_meeting_connector_controller
- Zoom Zoom_on-premise_meeting_connector_mmr
- Zoom Zoom_on-premise_recording_connector
- Zoom Zoom_on-premise_virtual_room_connector
- Zoom Zoom_on-premise_virtual_room_connector_load_balancer
- Zoom Video Communications Inc On-premise Meeting Connector — versions unspecified
- Zoom Video Communications Inc On-premise Meeting Connector Mmr — versions unspecified
- Zoom Video Communications Inc On-premise Recording Connector — versions unspecified
- Zoom Video Communications Inc On-premise Virtual Room Connector — versions unspecified
- Zoom Video Communications Inc On-premise Virtual Room Connector Load Balancer — versions unspecified
Weakness classification (CWE)
References
- security@zoom.us (x_refsource_MISC, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-34418?
- CVE-2021-34418 is a medium-severity vulnerability in Zoom On-Premise Meeting Connector Controller, classified under NULL Pointer Dereference. CVSS score: 4.0/10. Published 2021-11-11.
- How severe is CVE-2021-34418?
- Medium severity. CVSS v3 base score is 4.0 out of 10.