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tls13: clear tls1_3 on downgrade

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Unset ssl->options.tls1_3 whenever we drop to TLS 1.2 so PSK
handshakes don’t hit -326 VERSION_ERROR.
This commit is contained in:
Reda Chouk
2025-06-09 17:12:56 +02:00
parent 0bac2c2b34
commit 92b6e2f2e9
1 changed files with 3 additions and 0 deletions
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3
src/tls13.c
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@@ -5118,6 +5118,7 @@ int DoTls13ServerHello(WOLFSSL* ssl, const byte* input, word32* inOutIdx,
/* Force client hello version 1.2 to work for static RSA. */ /* Force client hello version 1.2 to work for static RSA. */
ssl->chVersion.minor = TLSv1_2_MINOR; ssl->chVersion.minor = TLSv1_2_MINOR;
ssl->version.minor = TLSv1_2_MINOR; ssl->version.minor = TLSv1_2_MINOR;
ssl->options.tls1_3 = 0;
#ifdef WOLFSSL_DTLS13 #ifdef WOLFSSL_DTLS13
if (ssl->options.dtls) { if (ssl->options.dtls) {
@@ -5218,6 +5219,7 @@ int DoTls13ServerHello(WOLFSSL* ssl, const byte* input, word32* inOutIdx,
if (ssl->options.dtls) { if (ssl->options.dtls) {
ssl->chVersion.minor = DTLSv1_2_MINOR; ssl->chVersion.minor = DTLSv1_2_MINOR;
ssl->version.minor = DTLSv1_2_MINOR; ssl->version.minor = DTLSv1_2_MINOR;
ssl->options.tls1_3 = 0;
ret = Dtls13ClientDoDowngrade(ssl); ret = Dtls13ClientDoDowngrade(ssl);
if (ret != 0) if (ret != 0)
return ret; return ret;
@@ -5231,6 +5233,7 @@ int DoTls13ServerHello(WOLFSSL* ssl, const byte* input, word32* inOutIdx,
return VERSION_ERROR; return VERSION_ERROR;
} }
#ifndef WOLFSSL_NO_TLS12 #ifndef WOLFSSL_NO_TLS12
ssl->options.tls1_3 = 0;
return DoServerHello(ssl, input, inOutIdx, helloSz); return DoServerHello(ssl, input, inOutIdx, helloSz);
#else #else
SendAlert(ssl, alert_fatal, wolfssl_alert_protocol_version); SendAlert(ssl, alert_fatal, wolfssl_alert_protocol_version);