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.
How to fix
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| microsoft windows_10 | 1709, 1803, 1809, 1903, 1909 | — |
| microsoft windows_server_2019 | No range specified, 1903, 1909 | — |
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Attack Surface Management
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