Microsoft Windows CryptoAPI Spoofing Vulnerability

Exploited in the wild. Listed by CISA on 2021-11-03; known to be used by ransomware.

89.1%likelihood of exploitation, next 30 days

100%of all CVEs are less likely

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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.

No ready check is stored for this CVE. Confirm it by hand from the references.

References

https://nvd.nist.gov/vuln/detail/CVE-2020-0601

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