![]() That number grows quadratically with the number of intermediate certificates in certain pathological cases (for example if they all have the same Subject) leading to a CPU DoS. Set a fixed budget that should fit all real world chains, given we only look at intermediates provided by the peer. The algorithm can be improved, but that's left for follow-up CLs: * the cache logic should be reviewed for correctness, as it seems to override the entire chain with the cached one * the equality check should compare Subject and public key, not the whole certificate * certificates with the right SKID but the wrong Subject should not be considered, and in particular should not take priority over certificates with the right Subject Fixes #29233 Change-Id: Ib257c12cd5563df7723f9c81231d82b882854213 Reviewed-on: https://team-review.git.corp.google.com/c/370475 Reviewed-by: Andrew Bonventre <andybons@google.com> Reviewed-on: https://go-review.googlesource.com/c/154105 Reviewed-by: Filippo Valsorda <filippo@golang.org> Run-TryBot: Filippo Valsorda <filippo@golang.org> |
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