CVE-2021-38665:Remote Desktop Protocol Client Information Disclosure Vulnerability (CVE-2021-38665)

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Description Preview

Microsoft Remote Desktop Protocol (RDP) client contains an information disclosure vulnerability that could allow an attacker to gain access to sensitive information. This vulnerability affects Windows systems with RDP client functionality enabled.

Overview

CVE-2021-38665 is an information disclosure vulnerability in Microsoft's Remote Desktop Protocol client. When exploited, this vulnerability could allow an attacker to access sensitive information that should be protected. The vulnerability exists due to improper handling of certain operations within the RDP client. An attacker who successfully exploited this vulnerability could view information that was intended to be protected. This vulnerability requires user interaction, as the target would need to connect to a malicious RDP server controlled by the attacker.

Remediation

To remediate this vulnerability, apply the security updates provided by Microsoft. Users should:

  1. Install the latest security updates from Microsoft Windows Update
  2. Keep all Windows systems updated with the latest patches
  3. Consider implementing network-level authentication for RDP connections
  4. Restrict RDP access to trusted hosts only
  5. Use a firewall to limit exposure of RDP services
  6. Enable multi-factor authentication for remote access when possible
  7. Monitor for suspicious RDP connection attempts

References

  1. Microsoft Security Advisory: https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-38665
  2. Microsoft Security Update Guide: https://msrc.microsoft.com/update-guide/
  3. Microsoft Security Response Center: https://msrc.microsoft.com/

Industry ExposureMost to least
This section illustrates the prevalence of a specific Common Vulnerabilities and Exposures (CVE) across various industries based on customer reports. The ranking displays industries from the most to least affected by this particular vulnerability, offering valuable insight into where this CVE has been most frequently observed. This information can help organizations within these sectors prioritize their security efforts, understand their relative risk exposure compared to their peers, and focus remediation strategies where they are most needed. By understanding the industry-specific impact, organizations can make more informed decisions regarding patching, resource allocation, and overall risk management related to this CVE.

  1. Manufacturing
    Manufacturing
  2. Health Care & Social Assistance
    Health Care & Social Assistance
  3. Public Administration
    Public Administration
  4. Educational Services
    Educational Services
  5. Finance and Insurance
    Finance and Insurance
  6. Transportation & Warehousing
    Transportation & Warehousing
  7. Retail Trade
    Retail Trade
  8. Professional, Scientific, & Technical Services
    Professional, Scientific, & Technical Services
  9. Utilities
    Utilities
  10. Information
    Information
  11. Other Services (except Public Administration)
    Other Services (except Public Administration)
  12. Arts, Entertainment & Recreation
    Arts, Entertainment & Recreation
  13. Management of Companies & Enterprises
    Management of Companies & Enterprises
  14. Accommodation & Food Services
    Accommodation & Food Services
  15. Agriculture, Forestry Fishing & Hunting
    Agriculture, Forestry Fishing & Hunting
  16. Construction
    Construction
  17. Real Estate Rental & Leasing
    Real Estate Rental & Leasing
  18. Mining
    Mining
  19. Wholesale Trade
    Wholesale Trade
  20. Administrative, Support, Waste Management & Remediation Services
    Administrative, Support, Waste Management & Remediation Services

Focus on What Matters

  1. See Everything.
  2. Identify True Risk.
  3. Proactively Mitigate Threats.

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