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Rewterz Threat Advisory – Multiple Zoom Vulnerabilities

Severity

Medium

Analysis Summary

CVE-2021-34423

Multiple Zoom products are vulnerable to a buffer overflow, caused by improper bounds checking. By sending a specially-crafted request, a remote attacker could overflow a buffer and execute arbitrary code on the system.

CVE-2021-34424

A buffer overflow vulnerability was discovered in the Zoom products This can potentially allow a malicious actor to crash the service or application, or leverage this vulnerability to execute arbitrary code. 

Impact

  • Execute arbitrary code
  • Obtain information

Affected Vendors

Zoom

Affected Products

  • Zoom Client for Meetings (for Android
  • iOS
  • Linux
  • macOS
  • and Windows) before version 5.8.4
  • Zoom Client for Meetings for Blackberry (for Android and iOS) before version 5.8.1
  • Zoom Client for Meetings for intune (for Android and iOS) before version 5.8.4

Remediation

Refer to Zoom advisory for the complete list of affected products and their respective patches.

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