Microsoft Windows CryptoAPI CVE-2020-0601 Spoofing Vulnerability

Description

A spoofing vulnerability exists in the way Windows CryptoAPI (Crypt32.dll) validates Elliptic Curve Cryptography (ECC) certificates. An attacker could exploit the vulnerability by using a spoofed code-signing certificate to sign a malicious executable, making it appear the file was from a trusted, legitimate source. The user would have no way of knowing the file was malicious, because the digital signature would appear to be from a trusted provider. A successful exploit could also allow the attacker to conduct man-in-the-middle attacks and decrypt confidential information on user connections to the affected software. The security update addresses the vulnerability by ensuring that Windows CryptoAPI completely validates ECC certificates.

Affected Applications

Windows Server version 1903 (Server Core installation)
Windows Server 2016
Windows Server version 1803 (Server Core Installation)
Windows 10
Windows Server version 1909 (Server Core installation)
Windows Server 2019

CVE References

Other References