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LibTLS: Treat a close_notify before agreeing on a cipher suite as a handshake failure

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Some TLS implementations (namely, AWS CloudFront) do this instead of
sending handshake_failure for some reason.
This commit is contained in:
Luke 2020-10-25 21:09:10 +00:00 • committed by Andreas Kling
parent 328e481ee9
commit 63a94deb43
1 changed files with 6 additions and 0 deletions
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6
Libraries/LibTLS/Record.cpp
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@ -315,6 +315,12 @@ ssize_t TLSv12::handle_message(const ByteBuffer& buffer)
res += 2;
alert(AlertLevel::Critical, AlertDescription::CloseNotify);
m_context.connection_finished = true;
if (!m_context.cipher_spec_set) {
// AWS CloudFront hits this.
dbg() << "Server sent a close notify and we haven't agreed on a cipher suite. Treating it as a handshake failure.";
m_context.critical_error = (u8)AlertDescription::HandshakeFailure;
try_disambiguate_error();
}
}
m_context.error_code = (Error)code;
}