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Rewterz Threat Update – CVE-2021-42321 – Targeted Attacks Exploiting Microsoft Exchange Servers
November 23, 2021
Rewterz Threat Advisory – CVE-2021-41379 – New Windows Zero Day Exploited for Privilege Escalation
November 23, 2021

Rewterz Threat Advisory – Multiple Microsoft Edge Vulnerabilities

November 23, 2021

Severity

Low

Analysis Summary

CVE-2021-42308 

Microsoft Edge (Chromium-based) could allow a remote attacker to conduct a spoofing attack. By persuading a victim to open a specially-crafted content, an attacker could exploit this vulnerability to conduct a spoofing attack.

CVE-2021-43220 

Microsoft Edge for iOS could allow a remote attacker to conduct a spoofing attack. By persuading a victim to open a specially-crafted content, an attacker could exploit this vulnerability to conduct a spoofing attack.

CVE-2021-43221 

Microsoft Edge (Chromium-based) could allow a remote attacker to execute arbitrary code on the system. By persuading a victim to open a specially-crafted content, an attacker could exploit this vulnerability to execute arbitrary code on the system.

Impact

  • Unauthorized Access
  • Arbitrary Code Execution

Affected Vendors

Microsoft

Affected Products

  • Microsoft Edge (Chromium-based)
  • Microsoft Edge for iOS

Remediation

Use Microsoft Automatic Update to apply the appropriate patch for your system, or the Microsoft Security Update Guide to search for available patches.

CVE-2021-42308

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-42308

CVE-2021-43220

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-43220

CVE-2021-43221

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-43221
  • Services
    • Assess
      • Compromise Assessment
      • APT Assessment
      • Penetration Testing
      • Secure Architecture Design & Review
      • Red Team Assessment
      • Purple Team Assessment
      • Social Engineering
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    • 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
  • Company
    • About Us
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    • Contact
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