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CVE-2020-1118

Microsoft Windows Transport Layer Security Denial of Service Vulnerability

Published
Last modified
published
Not listed in CISA KEV
Fix
Fix or patch referenced
None on Exploit-DB, Metasploit or GitHub

Summary

A denial of service vulnerability exists in the Windows implementation of Transport Layer Security (TLS) when it improperly handles certain key exchanges. An attacker who successfully exploited the vulnerability could cause a target system to stop responding. To exploit this vulnerability, a remote unauthenticated attacker could send a specially crafted request to a target system utilizing TLS 1.2 or lower, triggering the system to automatically reboot. The update addresses the vulnerability by changing the way TLS key exchange messages are validated.

Timeline

  1. CVE published
  2. Record last updated
  3. EPSS reached 10%

    FIRST estimates at least a 10% chance of exploitation in the next 30 days

Affected versions

  • Microsoft Windows 10 Version 1709

    From 10.0.0

  • Microsoft Windows 10 Version 1709 for 32-bit Systems

    From 10.0.0

  • Microsoft Windows 10 Version 1803

    From 10.0.0

  • Microsoft Windows 10 Version 1809

    From 10.0.17763.0

  • Microsoft Windows 10 Version 1809

    From 10.0.0

  • Microsoft Windows 10 Version 1903 for 32-bit Systems

    From 10.0.0

  • Microsoft Windows 10 Version 1903 for ARM64-based Systems

    From 10.0.0

  • Microsoft Windows 10 Version 1903 for x64-based Systems

    From 10.0.0

  • Microsoft Windows 10 Version 1909

    From 10.0.0

  • Microsoft Windows Server 2019

    From 10.0.17763.0

  • Microsoft Windows Server 2019 (Server Core installation)

    From 10.0.17763.0

  • Microsoft Windows Server, version 1803 (Server Core Installation)

    From 10.0.0

  • Microsoft Windows Server, version 1903 (Server Core installation)

    From 10.0.0

  • Microsoft Windows Server, version 1909 (Server Core installation)

    From 10.0.0

References 1

msrc.microsoft.com