crypto/tls: change default minimum version to TLS 1.0.

SSLv3 (the old minimum) is still supported and can be enabled via the
tls.Config, but this change increases the default minimum version to TLS
1.0. This is now common practice in light of the POODLE[1] attack
against SSLv3's CBC padding format.

[1] https://www.imperialviolet.org/2014/10/14/poodle.html

Fixes #9364.

Change-Id: Ibae6666ee038ceee0cb18c339c393155928c6510
Reviewed-on: https://go-review.googlesource.com/1791
Reviewed-by: Minux Ma <minux@golang.org>

diff --git a/src/crypto/tls/common.go b/src/crypto/tls/common.go
index 776b70c93c8fc632b6b82be296220b14dec3d0a5..e3c6004bc5274dad1d0799a8f57334e8c547ad1c 100644 (file)
--- a/src/crypto/tls/common.go
+++ b/src/crypto/tls/common.go
@@ -30,7 +30,7 @@ const (
        recordHeaderLen = 5            // record header length
        maxHandshake    = 65536        // maximum handshake we support (protocol max is 16 MB)
 
-       minVersion = VersionSSL30
+       minVersion = VersionTLS10
        maxVersion = VersionTLS12
 )