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, aka Windows CryptoAPI Spoofing Vulnerability.
Weakness
The product does not validate, or incorrectly validates, a certificate.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Windows_10_1507 | Microsoft | - (including) | - (including) |
| Windows_10_1607 | Microsoft | - (including) | - (including) |
| Windows_10_1709 | Microsoft | - (including) | - (including) |
| Windows_10_1803 | Microsoft | - (including) | - (including) |
| Windows_10_1809 | Microsoft | * | * |
| Windows_10_1903 | Microsoft | - (including) | - (including) |
| Windows_10_1909 | Microsoft | - (including) | - (including) |
| Windows_server_1803 | Microsoft | - (including) | - (including) |
| Windows_server_1903 | Microsoft | - (including) | - (including) |
| Windows_server_1909 | Microsoft | - (including) | - (including) |
| Windows_server_2016 | Microsoft | - (including) | - (including) |
| Windows_server_2019 | Microsoft | - (including) | - (including) |
Potential Mitigations
Related Attack Patterns
References
- http://packetstormsecurity.com/files/155960/CurveBall-Microsoft-Windows-CryptoAPI-Spoofing-Proof-Of-Concept.html
- http://packetstormsecurity.com/files/155961/CurveBall-Microsoft-Windows-CryptoAPI-Spoofing-Proof-Of-Concept.html
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0601
- http://packetstormsecurity.com/files/155960/CurveBall-Microsoft-Windows-CryptoAPI-Spoofing-Proof-Of-Concept.html
- http://packetstormsecurity.com/files/155961/CurveBall-Microsoft-Windows-CryptoAPI-Spoofing-Proof-Of-Concept.html
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0601
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-0601