求む！TLS1.3の再接続を完全に理解した方(Challenge CVE-2020-13777) - ぼちぼち日記1. GnuTLSの深刻な脆弱性(CVE-2020-13777) 先日、GnuTLSで深刻な脆弱性が見つかりました。 GNUTLS-SA-2020-06-03: CVE-2020-13777 It was found that GnuTLS 3.6.4 introduced a regression in the TLS protocol implementation. This caused the TLS server to not securely construct a session ticket encryption key considering the application supplied secret, allowing a MitM attacker to bypass authentication in TLS 1.3 and recover previous c
