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GO-2026-5015

Invoking server panic during CheckHostKey/Authenticate in golang.org/x/crypto/ssh

Details

SSH servers which use CertChecker as a public key callback without setting IsUserAuthority or IsHostAuthority could be caused to panic by a client presenting a certificate. CertChecker now returns an error instead of panicking when these callbacks are nil.

Are you affected?

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Affected packages

Go / golang.org/x/crypto
Introduced in: 0 Fixed in: 0.52.0
Fix go get golang.org/x/crypto@v0.52.0

References