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CVE-2024-45341: Usage of IPv6 zone IDs can bypass URI name constraints in crypto/x509
Description
A certificate with a URI which has a IPv6 address with a zone ID may incorrectly satisfy a URI name constraint that applies to the certificate chain. Certificates containing URIs are not permitted in the web PKI, so this only affects users of private PKIs which make use of URIs.
Classification
CVE ID: CVE-2024-45341
Affected Products
Vendor: Go standard library
Product: crypto/x509
Exploit Prediction Scoring System (EPSS)
EPSS Score: 0.05% (probability of being exploited)
EPSS Percentile: 18.25% (scored less or equal to compared to others)
EPSS Date: 2025-02-27 (when was this score calculated)
References
https://go.dev/cl/643099https://go.dev/issue/71156
https://groups.google.com/g/golang-dev/c/bG8cv1muIBM/m/G461hA6lCgAJ
https://groups.google.com/g/golang-dev/c/CAWXhan3Jww/m/bk9LAa-lCgAJ
https://pkg.go.dev/vuln/GO-2025-3373