From 2a699bc6e94b8223d900e8880ad628aebf17ab6d Mon Sep 17 00:00:00 2001 From: Daniel Stenberg Date: Mon, 6 Feb 2012 22:12:06 +0100 Subject: CURLOPT_SSL_OPTIONS: added Allow an appliction to set libcurl specific SSL options. The first and only options supported right now is CURLSSLOPT_ALLOW_BEAST. It will make libcurl to disable any work-arounds the underlying SSL library may have to address a known security flaw in the SSL3 and TLS1.0 protocol versions. This is a reaction to us unconditionally removing that behavior after this security advisory: http://curl.haxx.se/docs/adv_20120124B.html ... it did however cause a lot of programs to fail because of old servers not liking this work-around. Now programs can opt to decrease the security in order to interoperate with old servers better. --- lib/ssluse.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'lib/ssluse.c') diff --git a/lib/ssluse.c b/lib/ssluse.c index 014d5b56a..c3d5ec4c7 100644 --- a/lib/ssluse.c +++ b/lib/ssluse.c @@ -1566,7 +1566,10 @@ ossl_connect_step1(struct connectdata *conn, #endif #ifdef SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS - ctx_options &= ~SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS; + /* unless the user explicitly ask to allow the protocol vulnerability we + use the work-around */ + if(!conn->data->set.ssl_enable_beast) + ctx_options &= ~SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS; #endif /* disable SSLv2 in the default case (i.e. allow SSLv3 and TLSv1) */ -- cgit v1.2.1