Limit handshake messages we are willing to accept post-handshake in crypto/tls
Exact source revision recorded 24 Oct 2026 13:19:41 UTC. It does not establish the source's current position. Latest evidence.
osv · GO-2026-6090
PublishedHandshake messages, such as KeyUpdate, are always considered as state-advancing, regardless of whether a handshake has been completed or not. As a result, a malicious client can keep sending KeyUpdate messages to force the server to keep performing key derivation operations indefinitely.
- Source published
- 13 Aug 2026 21:43:54 UTC
- Source modified
- 20 Oct 2026 10:42:24 UTC
- Observed here
- 24 Oct 2026 13:19:41 UTC
- Source terms
- OSV · upstream source license applies
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