Vulnerability identifier: #VU27854
Vulnerability risk: High
CVSSv3.1: 7.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-20
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Windows
Operating systems & Components /
Operating system
Windows Server
Operating systems & Components /
Operating system
Vendor: Microsoft
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to the Windows implementation of Transport Layer Security (TLS) improperly handles certain key exchanges. A remote attacker can send a specially crafted request to a target system utilizing TLS 1.2 or lower and perform a denial of service (DoS) attack.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Windows: 10 1709 - 10 1909
Windows Server: 2019 - 2019 1909
External links
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1118
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.