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Rewterz Threat Alert – Quasar RAT – Active IOCs
August 17, 2021
Rewterz Threat Alert – DanaBot Trojan – Active IOCs
August 17, 2021

Rewterz Threat Advisory – CVE-2021-34407 – Zoom Remote Code Execution

August 17, 2021

Severity

High

Analysis Summary

CVE-2021-34407

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Zoom Clients. Authentication is not required to exploit this vulnerability. The specific flaw exists within the processing of encrypted messages. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current user.

Impact

  • Code Execution
  • Unauthorized Access

Affected Vendors

Zoom

Affected Products

  • Client

Remediation

Zoom has issued an update to correct this vulnerability. More details can be found at:

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

  • Services
    • Assess
      • Compromise Assessment
      • APT Assessment
      • Penetration Testing
      • Secure Architecture Design & Review
      • Red Team Assessment
      • Purple Team Assessment
      • Social Engineering
      • Source Code Review
    • Respond
      • Incident Response
      • Incident Analysis
  • Transform
    • SOC Consultancy
    •     SOC Maturity Assessment
    •     SOC Model Evaluation
    •     SOC Gap Analysis
    •     SIEM Gap Analysis
    •     SIEM Optimization
    •     SOC Content Pack
  • Train
    • Security Awareness and Training
    • Tabletop Exercise
    • Simulated Cyber Attack Exercises
  • Managed Security
    • Managed Security Monitoring
      • Remote SOC
      • Onsite SOC
      • Hybrid SOC
    • Managed Security Services
      • Managed Detection and Response
      • Managed Endpoint Detection and Response
      • Managed Threat Intelligence
      • Managed Threat Hunting
      • Managed Risk-Based SOAR
      • Managed Penetration Testing
  • Solutions
  • Resources
    • Blog
    • Threat Advisory
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    • About Us
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