#VU46416 Use of a broken or risky cryptographic algorithm in Windows and Windows Server


Published: 2020-09-08

Vulnerability identifier: #VU46416

Vulnerability risk: Medium

CVSSv3.1: 4.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-1596

CWE-ID: CWE-327

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 gain access to sensitive information.

The vulnerability exists due to Windows uses weak TLS_DHE ciphers. A remote attacker can intercept traffic and decrypt it or perform a Man-in-the-Middle (MitM) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Windows: 10 1803 10.0.17134.48, 10 1809 10.0.17763.1, 10 1909 10.0.18363.476, 10 1709 10.0.16299.19, 10 1903 10.0.18362.116, 10 2004 10.0.19041.264, 10 1607 10.0.14393.10, 7, 8.1 - 8.1 RT

Windows Server: 2008 - 2019 2004


External links
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1596


Q & A

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.


Latest bulletins with this vulnerability