VU#573195: Go, OpenSSL, Apple, LibreSSL, pyca, wolfSSL Name-Constraint inconsistency in RFC 5280 implementation
Cybersecurity Classified by Officially
This note covers differences in how TLS libraries interpret X.509 Name Constraints. A certificate that one library accepts may be rejected by another. Some of those differences are defects; others follow from behavior that RFC 5280 does not fully specify. The observed differences concern DNS name comparison, IP address handling, URI-authority parsing, and wildcard matching. …
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2 versions recorded. The original is kept in full — nothing is overwritten.
- v2 imported change on current
- v1 as first published on Titled: “VU#573195: Go, OpenSSL, Apple, LibreSSL, pyca, wolfSSL Name-Constraint Inconsistency in RFC 5280 Implementation”
Provenance
- Organization
- CERT Coordination Center — imported from official source
- Official source
- https://www.kb.cert.org/vuls/atomfeed/ ATOM
- Imported
- October 13, 2026 19:00
- Versions
- 2 recorded
- Identity
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https://kb.cert.org/vuls/id/573195