PT-2021-20522 · Zoom · Zoom On-Premise Meeting Connector Controller

Nikita Abramov · Published 2021-09-27 · Updated 2022-07-12 · CVE-2021-34415

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions: Zoom On-Premise Meeting Connector Controller versions prior to 4.6.358.20210205

Description: The Zone Controller service does not verify the cnt field sent in incoming network packets, leading to exhaustion of resources and system crash.

Recommendations: For versions prior to 4.6.358.20210205, update to version 4.6.358.20210205 or later to resolve the issue. As a temporary workaround, consider restricting incoming network packets to minimize the risk of exploitation.

Fix

Allocation of Resources Without Limits

Weakness Enumeration

CWE-770

Related Identifiers

CVE-2021-34415

Affected Products

Zoom On-Premise Meeting Connector Controller

References · 7

• https://nvd.nist.gov/vuln/detail/CVE-2021-34415 · Security Note
• https://explore.zoom.us/en/trust/security/security-bulletin · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-34415 · Vendor Advisory
• https://t.me/ptswarm/89 · Telegram Post
• https://t.me/cvenotify/21797 · Telegram Post
• https://t.me/cvenotify/21508 · Telegram Post
• https://t.me/cibsecurity/29484 · Telegram Post