Don't attempt to add a zero length padding extension
The padding extension should always be at least 1 byte long
@@ -843,7 +843,7 @@ EXT_RETURN tls_construct_ctos_padding(SSL *s, WPACKET *pkt,
* 1 byte long so as not to have an empty extension last (WebSphere 7.x,
* 8.x are intolerant of that condition)
*/
- if (hlen >= 4)
+ if (hlen > 4)
hlen -= 4;
else
hlen = 1;
