CVE-2020-1118

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.

Affected Software

VendorProductVersion RangeStatus
MicrosoftWindows 10 Version 170910.0.0 < publicationaffected
MicrosoftWindows 10 Version 1709 for 32-bit Systems10.0.0 < publicationaffected
MicrosoftWindows 10 Version 180310.0.0 < publicationaffected
MicrosoftWindows 10 Version 180910.0.17763.0 < publicationaffected
MicrosoftWindows 10 Version 180910.0.0 < publicationaffected
MicrosoftWindows 10 Version 1903 for 32-bit Systems10.0.0 < publicationaffected
MicrosoftWindows 10 Version 1903 for ARM64-based Systems10.0.0 < publicationaffected
MicrosoftWindows 10 Version 1903 for x64-based Systems10.0.0 < publicationaffected
MicrosoftWindows 10 Version 190910.0.0 < publicationaffected
MicrosoftWindows Server 201910.0.17763.0 < publicationaffected
MicrosoftWindows Server 2019 (Server Core installation)10.0.17763.0 < publicationaffected
MicrosoftWindows Server, version 1803 (Server Core Installation)10.0.0 < publicationaffected
MicrosoftWindows Server, version 1903 (Server Core installation)10.0.0 < publicationaffected
MicrosoftWindows Server, version 1909 (Server Core installation)10.0.0 < publicationaffected

Weaknesses

  • Denial of Service

ADP Enrichment

CVE Program Container

Additional References

References