CVE-2020-14039

In Go before 1.13.13 and 1.14.x before 1.14.5, Certificate.Verify may lack a check on the VerifyOptions.KeyUsages EKU requirements (if VerifyOptions.Roots equals nil and the installation is on Windows). Thus, X.509 certificate verification is incomplete.

Weakness

The product does not validate, or incorrectly validates, a certificate.

Affected Software

Potential Mitigations

Related Attack Patterns

• https://cwe.mitre.org/data/definitions/459.html
• https://cwe.mitre.org/data/definitions/475.html

References

• http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00077.html
• http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00082.html
• http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00029.html
• http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00030.html
• https://groups.google.com/forum/#%21forum/golang-announce
• https://groups.google.com/forum/#%21topic/golang-announce/XZNfaiwgt2w
• https://security.netapp.com/advisory/ntap-20200731-0005/
• https://www.oracle.com/security-alerts/cpuApr2021.html