CVE-2020-1118

Description

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.

CVSS breakdown

Affected products

• microsoft / Windows10 Version 1803 for 32-bit Systems – 10 Version 1803 for 32-bit Systems
• microsoft / Windows10 Version 1803 for x64-based Systems – 10 Version 1803 for x64-based Systems
• microsoft / Windows10 Version 1803 for ARM64-based Systems – 10 Version 1803 for ARM64-based Systems
• microsoft / Windows10 Version 1809 for 32-bit Systems – 10 Version 1809 for 32-bit Systems
• microsoft / Windows10 Version 1809 for x64-based Systems – 10 Version 1809 for x64-based Systems
• microsoft / Windows10 Version 1809 for ARM64-based Systems – 10 Version 1809 for ARM64-based Systems
• microsoft / Windows10 Version 1709 for 32-bit Systems – 10 Version 1709 for 32-bit Systems
• microsoft / Windows10 Version 1709 for x64-based Systems – 10 Version 1709 for x64-based Systems
• microsoft / Windows10 Version 1709 for ARM64-based Systems – 10 Version 1709 for ARM64-based Systems
• microsoft / Windows 101909 – 1909
• microsoft / Windows 101903 – 1903
• microsoft / Windows 101809 – 1809
• microsoft / Windows 101803 – 1803
• microsoft / Windows 101709 – 1709
• microsoft / Windows 10 Version 170910.0.0 – publication
• microsoft / Windows 10 Version 1709 for 32-bit Systems10.0.0 – publication
• microsoft / Windows 10 Version 180310.0.0 – publication
• microsoft / Windows 10 Version 180910.0.17763.0 – publication
• microsoft / Windows 10 Version 180910.0.0 – publication
• microsoft / Windows 10 Version 1903 for 32-bit Systemsunspecified – unspecified
• microsoft / Windows 10 Version 1903 for 32-bit Systems10.0.0 – publication
• microsoft / Windows 10 Version 1903 for ARM64-based Systems10.0.0 – publication
• microsoft / Windows 10 Version 1903 for ARM64-based Systemsunspecified – unspecified
• microsoft / Windows 10 Version 1903 for x64-based Systemsunspecified – unspecified
• microsoft / Windows 10 Version 1903 for x64-based Systems10.0.0 – publication
• microsoft / Windows 10 Version 190910.0.0 – publication
• microsoft / Windows 10 Version 1909 for 32-bit Systemsunspecified – unspecified
• microsoft / Windows 10 Version 1909 for ARM64-based Systemsunspecified – unspecified
• microsoft / Windows 10 Version 1909 for x64-based Systemsunspecified – unspecified
• microsoft / Windows Server2019 – 2019
• microsoft / Windows Serverversion 1803 (Core Installation) – version 1803 (Core Installation)
• microsoft / Windows Server2019 (Core installation) – 2019 (Core installation)
• microsoft / Windows Server 2019
• microsoft / Windows Server 20191903 – 1903
• microsoft / Windows Server 20191909 – 1909
• microsoft / Windows Server 201910.0.17763.0 – publication
• microsoft / Windows Server 2019 (Server Core installation)10.0.17763.0 – publication
• microsoft / Windows Server, version 1803 (Server Core Installation)10.0.0 – publication
• microsoft / Windows Server, version 1903 (Server Core installation)10.0.0 – publication
• microsoft / Windows Server, version 1903 (Server Core installation)unspecified – unspecified
• microsoft / Windows Server, version 1909 (Server Core installation)10.0.0 – publication
• microsoft / Windows Server, version 1909 (Server Core installation)unspecified – unspecified

References

• VENDOR_ADVISORYhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2020-1118