Merge remote-tracking branch 'public/bug6033' into maint-0.2.2

This commit is contained in:
Nick Mathewson 2012-06-04 11:33:27 -04:00
commit 6d85a79653
2 changed files with 21 additions and 0 deletions

6
changes/bug6033 Normal file
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@ -0,0 +1,6 @@
o Major bugfixes:
- Work around a bug in OpenSSL that broke renegotiation with
TLS 1.1 and TLS 1.2. Without this workaround, all attempts
to speak the v2 Tor network protocol when both sides were
using OpenSSL 1.0.1 would fail. Fix for bug 6033, which is
not a bug in Tor.

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@ -790,6 +790,21 @@ tor_tls_context_new(crypto_pk_env_t *identity, unsigned int key_lifetime,
goto error;
SSL_CTX_set_options(result->ctx, SSL_OP_NO_SSLv2);
/* Disable TLS1.1 and TLS1.2 if they exist. We need to do this to
* workaround a bug present in all OpenSSL 1.0.1 versions (as of 1
* June 2012), wherein renegotiating while using one of these TLS
* protocols will cause the client to send a TLS 1.0 ServerHello
* rather than a ServerHello written with the appropriate protocol
* version. Once some version of OpenSSL does TLS1.1 and TLS1.2
* renegotiation properly, we can turn them back on when built with
* that version. */
#ifdef SSL_OP_NO_TLSv1_2
SSL_CTX_set_options(result->ctx, SSL_OP_NO_TLSv1_2);
#endif
#ifdef SSL_OP_NO_TLSv1_1
SSL_CTX_set_options(result->ctx, SSL_OP_NO_TLSv1_1);
#endif
if (
#ifdef DISABLE_SSL3_HANDSHAKE
1 ||