Microsoft Windows CryptoAPI Spoofing Vulnerability
Details
CISA date
2021-11-03
Affected versions
Windows
Summary
Microsoft Windows CryptoAPI (Crypt32.dll) contains a spoofing vulnerability in the way it 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. 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 vulnerability is also known under the moniker of CurveBall.
Remediation
Apply updates per vendor instructions.
Exploit info
No exploit-tagged NVD references in our cache; see the CISA KEV link below.
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