Security Advanced SECURITY-252 · 18 min

A mutual TLS path validates client chains while one outbound proxy segment blocks CRL or OCSP fetches during a failover rehearsal

The certificate looks correct and revocation checks quietly fail on one leg of the journey. Normal traffic masked the issue until the standby or alternate path became active under rehearsal conditions.

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The certificate looks correct and revocation checks quietly fail on one leg of the journey. Normal …

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1 · 원인 분석 2 · 복구 방안 3 · 재발 방지

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A mutual TLS path validates client chains while one outbound proxy segment blocks CRL or OCSP fetches during a failover rehearsal

A mutual TLS path validates at the edge while revocation checks or identity forwarding fail later in the request chain during a failover rehearsal

An updated trust bundle reaches the app while the sidecar or proxy path still pins the previous set during a failover rehearsal

Mutual TLS is enabled but the CRL endpoint is unreachable and only strict clients reject the server

A new certificate chain validates while one appliance still pins the previous intermediate or key hash and rejects the same service during a failover rehearsal