MEDIUM4.3
GO-2021-0154
Man-in-the-middle attack with SessionTicketsDisabled in crypto/tls
Quick fix
GO-2021-0154 — stdlib: upgrade to the fixed version with the command below.
go get stdlib@v1.3.2Details
When SessionTicketsDisabled is enabled, crypto/tls allowed man-in-the-middle attackers to spoof clients via unspecified vectors.
If the server enables TLS client authentication using certificates (this is rare) and explicitly sets SessionTicketsDisabled to true in the tls.Config, then a malicious client can falsely assert ownership of any client certificate it wishes.
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