CVE-2020-0601 — Microsoft Windows CryptoAPI Spoofing Vulnerability
CVE-2020-0601: Microsoft Windows CryptoAPI Spoofing Vulnerability
CISA Known Exploited Vulnerability (KEV)
| Vendor / project | Microsoft |
| Product | Windows |
| Date added | 2021-11-03 |
| Due date | 2022-05-03 |
| Ransomware campaign use | Unknown |
Description
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.
Required action (CISA)
Apply updates per vendor instructions.
Notes
Reference CISA's ED 20-02 (https://www.cisa.gov/news-events/directives/ed-20-02-mitigate-windows-vulnerabilities-january-2020-patch-tuesday) for further guidance and requirements. Note: The due date for addressing this vulnerability aligns with the requirements outlined in ED 20-02. https://nvd.nist.gov/vuln/detail/CVE-2020-0601
References
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-0601
- KEV catalog: https://www.cisa.gov/known-exploited-vulnerabilities-catalog