I need to unsupport TLSv1 and RC4-SHA
So i have this lines in my ssl.conf
SSLProtocol +TLSv1.2 +TLSv1.1 -TLSv1
SSLCompression off
SSLHonorCipherOrder on
SSLCipherSuite "ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256:ECDHE-RSA-AES256-SHA"
And I am checking if RC4 and TLSv1 are still supported using this command
sslscan --no-failed xxx.xxx.xxx.xxx:1337
sslscan gave me this result:
Supported Server Cipher(s):
Accepted TLSv1 256 bits AES256-SHA
Accepted TLSv1 256 bits CAMELLIA256-SHA
Accepted TLSv1 128 bits AES128-SHA
Accepted TLSv1 128 bits CAMELLIA128-SHA
Accepted TLSv1 128 bits DES-CBC3-SHA
**Accepted TLSv1 128 bits RC4-SHA**
Accepted TLS11 256 bits AES256-SHA
Accepted TLS11 256 bits CAMELLIA256-SHA
Accepted TLS11 128 bits AES128-SHA
Accepted TLS11 128 bits CAMELLIA128-SHA
Accepted TLS11 128 bits DES-CBC3-SHA
**Accepted TLS11 128 bits RC4-SHA**
Accepted TLS12 256 bits AES256-GCM-SHA384
Accepted TLS12 256 bits AES256-SHA256
Accepted TLS12 256 bits AES256-SHA
Accepted TLS12 256 bits CAMELLIA256-SHA
Accepted TLS12 128 bits AES128-GCM-SHA256
Accepted TLS12 128 bits AES128-SHA256
Accepted TLS12 128 bits AES128-SHA
Accepted TLS12 128 bits CAMELLIA128-SHA
Accepted TLS12 128 bits DES-CBC3-SHA
**Accepted TLS12 128 bits RC4-SHA**
Apparently RC4-SHA is still accepted which I am trying to configure to not support any RC4 and TLSv1. Is there a way of resolving this.
Thanks
Related
im interested in cert v1.0 for my local server,
how to generate pair of public and private key for server?
There is a list of supported algo for tls v1:
ECDHE-ECDSA-AES256-SHA TLSv1
ECDHE-RSA-AES256-SHA TLSv1
ECDHE-ECDSA-AES128-SHA TLSv1
ECDHE-RSA-AES128-SHA TLSv1
ECDHE-PSK-AES256-CBC-SHA384 TLSv1
ECDHE-PSK-AES256-CBC-SHA TLSv1
RSA-PSK-AES256-CBC-SHA384 TLSv1
DHE-PSK-AES256-CBC-SHA384 TLSv1
PSK-AES256-CBC-SHA384 TLSv1
ECDHE-PSK-AES128-CBC-SHA TLSv1
RSA-PSK-AES128-CBC-SHA256 TLSv1
DHE-PSK-AES128-CBC-SHA256 TLSv1
PSK-AES128-CBC-SHA256 TLSv1
How to use make one of it suitable for serv?
Your requirement together with the ciphers make no sense:
You have a mix of ECDSA, RSA and PSK ciphers, i.e. ciphers which require either an ECC certificate, a RSA certificate or no certificate at all. There is no certificate which covers all of this at the same time.
A certificate is not depending on the TLS version, i.e. there is no TLSv1 certificate.
I'm using tomcat version 8.5.34 and is put behind a NGINX. Because i want to reuse the connection (prevent repeating handshakes) i'm investigating the ussage of OpenSSLImplementation.
My server.xml looks like:
<Connector SSLEnabled="true"
port="8443"
protocol="org.apache.coyote.http11.Http11NioProtocol"
scheme="https"
secure="true"
sslImplementationName="org.apache.tomcat.util.net.openssl.OpenSSLImplementation"
executor="tomcatThreadPool" >
<SSLHostConfig>
sslProtocols = "TLSv1.2"
protocols = "TLSv1.2"
sslEnabledProtocols="TLSv1.2"
ciphers="TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384,TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384"
SSLVerifyClient="optional"/>
<Certificate
certificateKeyFile="/Users/vdBerg/Developer/apache/<mydomain>.key"
certificateFile="/Users/vdBerg/Developer/apache/<mydomain>.crt"
type="RSA" />
</SSLHostConfig>
</Connector>
As you can see in the configuration i tried several options to only support TLSv1.2.
But somehow these settings aren't picked up by tomcat.
When i run sslscan against my host:port, i still see it supports other protocols:
sslscan <mydomain>:8443
Preferred TLSv1.2 256 bits ECDHE-RSA-AES256-GCM-SHA384 Curve P-256 DHE 256
Accepted TLSv1.2 256 bits ECDHE-RSA-AES256-SHA384 Curve P-256 DHE 256
Accepted TLSv1.2 256 bits ECDHE-RSA-AES256-SHA Curve P-256 DHE 256
Accepted TLSv1.2 256 bits DHE-RSA-AES256-GCM-SHA384 DHE 2048 bits
Accepted TLSv1.2 256 bits DHE-RSA-AES256-SHA256 DHE 2048 bits
Accepted TLSv1.2 256 bits DHE-RSA-AES256-SHA DHE 2048 bits
Accepted TLSv1.2 256 bits DHE-RSA-CAMELLIA256-SHA DHE 2048 bits
Accepted TLSv1.2 128 bits ECDHE-RSA-AES128-GCM-SHA256 Curve P-256 DHE 256
Accepted TLSv1.2 128 bits ECDHE-RSA-AES128-SHA256 Curve P-256 DHE 256
Accepted TLSv1.2 128 bits ECDHE-RSA-AES128-SHA Curve P-256 DHE 256
Accepted TLSv1.2 128 bits DHE-RSA-AES128-GCM-SHA256 DHE 2048 bits
Accepted TLSv1.2 128 bits DHE-RSA-AES128-SHA256 DHE 2048 bits
Accepted TLSv1.2 128 bits DHE-RSA-AES128-SHA DHE 2048 bits
Accepted TLSv1.2 128 bits DHE-RSA-CAMELLIA128-SHA DHE 2048 bits
Preferred TLSv1.1 256 bits ECDHE-RSA-AES256-SHA Curve P-256 DHE 256
Accepted TLSv1.1 256 bits DHE-RSA-AES256-SHA DHE 2048 bits
Accepted TLSv1.1 256 bits DHE-RSA-CAMELLIA256-SHA DHE 2048 bits
Accepted TLSv1.1 128 bits ECDHE-RSA-AES128-SHA Curve P-256 DHE 256
Accepted TLSv1.1 128 bits DHE-RSA-AES128-SHA DHE 2048 bits
Accepted TLSv1.1 128 bits DHE-RSA-CAMELLIA128-SHA DHE 2048 bits
Preferred TLSv1.0 256 bits ECDHE-RSA-AES256-SHA Curve P-256 DHE 256
Accepted TLSv1.0 256 bits DHE-RSA-AES256-SHA DHE 2048 bits
Accepted TLSv1.0 256 bits DHE-RSA-CAMELLIA256-SHA DHE 2048 bits
Accepted TLSv1.0 128 bits ECDHE-RSA-AES128-SHA Curve P-256 DHE 256
Accepted TLSv1.0 128 bits DHE-RSA-AES128-SHA DHE 2048 bits
Accepted TLSv1.0 128 bits DHE-RSA-CAMELLIA128-SHA DHE 2048 bits
Who can tell me how to fix this?
Thanks in advance.
Ok it's working now, i just had the wrong structure:
Instead of
<SSLHostConfig>
sslProtocols = "TLSv1.2"
protocols = "TLSv1.2"
sslEnabledProtocols="TLSv1.2"
ciphers="TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384,TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384"
SSLVerifyClient="optional"/>
<Certificate
certificateKeyFile="/Users/vdBerg/Developer/apache/<mydomain>.key"
certificateFile="/Users/vdBerg/Developer/apache/<mydomain>.crt"
type="RSA" />
</SSLHostConfig>
I had to use:
<SSLHostConfig
protocols = "+SSLv2Hello+TLSv1.2-TLSv1-TLSv1.1"
>
<Certificate
certificateKeyFile="/Users/vdBerg/Developer/apache/mydomain.key"
certificateFile="/Users/vdBerg/Developer/apache/mydomain.crt"
type="RSA" />
</SSLHostConfig>
Ubuntu 14.04.4 LTS (GNU/Linux 3.13.0-91-generic x86_64)
java version "1.8.0_91"
Java(TM) SE Runtime Environment (build 1.8.0_91-b14)
Java HotSpot(TM) 64-Bit Server VM (build 25.91-b14, mixed mode)
Jetty 9.3.8.v2016031 connector configured like below:
SslContextFactory sslContextFactory = new SslContextFactory();
sslContextFactory.setKeyStorePath(sslKeystore);
sslContextFactory.setKeyStorePassword(SystemUtils.getEnvOrThrow("SERVER_SSL_PASSWORD"));
sslContextFactory.setKeyManagerPassword(SystemUtils.getEnvOrThrow("SERVER_SSL_KEY_PASSWORD"));
HttpConfiguration https_config = new HttpConfiguration();
https_config.setOutputBufferSize(32768);
https_config.addCustomizer(new SecureRequestCustomizer());
ServerConnector https = new ServerConnector(
server,
new SslConnectionFactory(sslContextFactory, "http/1.1"),
new HttpConnectionFactory(https_config));
https.setPort(Integer.valueOf(SystemUtils.getEnvOrThrow("SERVER_SSL_PORT")));
https.setIdleTimeout(60000);
server.setConnectors(new Connector[] { https });
I can make TLSv1.2 connections:
curl -X "GET" "https://<hidden_hostname>/some/path" -v --tlsv1.2
* Connected to <hidden_hostname> (123.45.67.890) port 443 (#0)
* TLS 1.2 connection using TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256
but when I try TLSv1.0 or TLSv1.1 I get this:
curl -X "GET" "https://<hidden_hostname>/some/path" -v --tlsv1.0
* Connected to <hidden_hostname> (123.45.67.890) port 443 (#0)
* Server aborted the SSL handshake
List of enabled and supported protocols is:
Enabled protocol: SSLv2Hello
Enabled protocol: TLSv1
Enabled protocol: TLSv1.1
Enabled protocol: TLSv1.2
Supported protocol: SSLv2Hello
Supported protocol: SSLv3
Supported protocol: TLSv1
Supported protocol: TLSv1.1
Supported protocol: TLSv1.2
And I don't know where the problem lies.
I have some clients which cannot use anything other than TLSv1.0.
Update 1 - added sslscan output
Failed SSLv3 256 bits ECDHE-RSA-AES256-GCM-SHA384
Failed SSLv3 256 bits ECDHE-ECDSA-AES256-GCM-SHA384
Failed SSLv3 256 bits ECDHE-RSA-AES256-SHA384
Failed SSLv3 256 bits ECDHE-ECDSA-AES256-SHA384
Rejected SSLv3 256 bits ECDHE-RSA-AES256-SHA
Rejected SSLv3 256 bits ECDHE-ECDSA-AES256-SHA
Failed SSLv3 256 bits SRP-DSS-AES-256-CBC-SHA
Failed SSLv3 256 bits SRP-RSA-AES-256-CBC-SHA
Failed SSLv3 256 bits SRP-AES-256-CBC-SHA
Failed SSLv3 256 bits DHE-DSS-AES256-GCM-SHA384
Failed SSLv3 256 bits DHE-RSA-AES256-GCM-SHA384
Failed SSLv3 256 bits DHE-RSA-AES256-SHA256
Failed SSLv3 256 bits DHE-DSS-AES256-SHA256
Rejected SSLv3 256 bits DHE-RSA-AES256-SHA
Rejected SSLv3 256 bits DHE-DSS-AES256-SHA
Rejected SSLv3 256 bits DHE-RSA-CAMELLIA256-SHA
Rejected SSLv3 256 bits DHE-DSS-CAMELLIA256-SHA
Rejected SSLv3 256 bits AECDH-AES256-SHA
Failed SSLv3 256 bits ADH-AES256-GCM-SHA384
Failed SSLv3 256 bits ADH-AES256-SHA256
Rejected SSLv3 256 bits ADH-AES256-SHA
Rejected SSLv3 256 bits ADH-CAMELLIA256-SHA
Failed SSLv3 256 bits ECDH-RSA-AES256-GCM-SHA384
Failed SSLv3 256 bits ECDH-ECDSA-AES256-GCM-SHA384
Failed SSLv3 256 bits ECDH-RSA-AES256-SHA384
Failed SSLv3 256 bits ECDH-ECDSA-AES256-SHA384
Rejected SSLv3 256 bits ECDH-RSA-AES256-SHA
Rejected SSLv3 256 bits ECDH-ECDSA-AES256-SHA
Failed SSLv3 256 bits AES256-GCM-SHA384
Failed SSLv3 256 bits AES256-SHA256
Rejected SSLv3 256 bits AES256-SHA
Rejected SSLv3 256 bits CAMELLIA256-SHA
Failed SSLv3 256 bits PSK-AES256-CBC-SHA
Rejected SSLv3 168 bits ECDHE-RSA-DES-CBC3-SHA
Rejected SSLv3 168 bits ECDHE-ECDSA-DES-CBC3-SHA
Failed SSLv3 168 bits SRP-DSS-3DES-EDE-CBC-SHA
Failed SSLv3 168 bits SRP-RSA-3DES-EDE-CBC-SHA
Failed SSLv3 168 bits SRP-3DES-EDE-CBC-SHA
Rejected SSLv3 168 bits EDH-RSA-DES-CBC3-SHA
Rejected SSLv3 168 bits EDH-DSS-DES-CBC3-SHA
Rejected SSLv3 168 bits AECDH-DES-CBC3-SHA
Rejected SSLv3 168 bits ADH-DES-CBC3-SHA
Rejected SSLv3 168 bits ECDH-RSA-DES-CBC3-SHA
Rejected SSLv3 168 bits ECDH-ECDSA-DES-CBC3-SHA
Rejected SSLv3 168 bits DES-CBC3-SHA
Failed SSLv3 168 bits PSK-3DES-EDE-CBC-SHA
Failed SSLv3 128 bits ECDHE-RSA-AES128-GCM-SHA256
Failed SSLv3 128 bits ECDHE-ECDSA-AES128-GCM-SHA256
Failed SSLv3 128 bits ECDHE-RSA-AES128-SHA256
Failed SSLv3 128 bits ECDHE-ECDSA-AES128-SHA256
Rejected SSLv3 128 bits ECDHE-RSA-AES128-SHA
Rejected SSLv3 128 bits ECDHE-ECDSA-AES128-SHA
Failed SSLv3 128 bits SRP-DSS-AES-128-CBC-SHA
Failed SSLv3 128 bits SRP-RSA-AES-128-CBC-SHA
Failed SSLv3 128 bits SRP-AES-128-CBC-SHA
Failed SSLv3 128 bits DHE-DSS-AES128-GCM-SHA256
Failed SSLv3 128 bits DHE-RSA-AES128-GCM-SHA256
Failed SSLv3 128 bits DHE-RSA-AES128-SHA256
Failed SSLv3 128 bits DHE-DSS-AES128-SHA256
Rejected SSLv3 128 bits DHE-RSA-AES128-SHA
Rejected SSLv3 128 bits DHE-DSS-AES128-SHA
Rejected SSLv3 128 bits DHE-RSA-SEED-SHA
Rejected SSLv3 128 bits DHE-DSS-SEED-SHA
Rejected SSLv3 128 bits DHE-RSA-CAMELLIA128-SHA
Rejected SSLv3 128 bits DHE-DSS-CAMELLIA128-SHA
Rejected SSLv3 128 bits AECDH-AES128-SHA
Failed SSLv3 128 bits ADH-AES128-GCM-SHA256
Failed SSLv3 128 bits ADH-AES128-SHA256
Rejected SSLv3 128 bits ADH-AES128-SHA
Rejected SSLv3 128 bits ADH-SEED-SHA
Rejected SSLv3 128 bits ADH-CAMELLIA128-SHA
Failed SSLv3 128 bits ECDH-RSA-AES128-GCM-SHA256
Failed SSLv3 128 bits ECDH-ECDSA-AES128-GCM-SHA256
Failed SSLv3 128 bits ECDH-RSA-AES128-SHA256
Failed SSLv3 128 bits ECDH-ECDSA-AES128-SHA256
Rejected SSLv3 128 bits ECDH-RSA-AES128-SHA
Rejected SSLv3 128 bits ECDH-ECDSA-AES128-SHA
Failed SSLv3 128 bits AES128-GCM-SHA256
Failed SSLv3 128 bits AES128-SHA256
Rejected SSLv3 128 bits AES128-SHA
Rejected SSLv3 128 bits SEED-SHA
Rejected SSLv3 128 bits CAMELLIA128-SHA
Failed SSLv3 128 bits PSK-AES128-CBC-SHA
Rejected SSLv3 128 bits ECDHE-RSA-RC4-SHA
Rejected SSLv3 128 bits ECDHE-ECDSA-RC4-SHA
Rejected SSLv3 128 bits AECDH-RC4-SHA
Rejected SSLv3 128 bits ADH-RC4-MD5
Rejected SSLv3 128 bits ECDH-RSA-RC4-SHA
Rejected SSLv3 128 bits ECDH-ECDSA-RC4-SHA
Rejected SSLv3 128 bits RC4-SHA
Rejected SSLv3 128 bits RC4-MD5
Failed SSLv3 128 bits PSK-RC4-SHA
Rejected SSLv3 56 bits EDH-RSA-DES-CBC-SHA
Rejected SSLv3 56 bits EDH-DSS-DES-CBC-SHA
Rejected SSLv3 56 bits ADH-DES-CBC-SHA
Rejected SSLv3 56 bits DES-CBC-SHA
Rejected SSLv3 40 bits EXP-EDH-RSA-DES-CBC-SHA
Rejected SSLv3 40 bits EXP-EDH-DSS-DES-CBC-SHA
Rejected SSLv3 40 bits EXP-ADH-DES-CBC-SHA
Rejected SSLv3 40 bits EXP-DES-CBC-SHA
Rejected SSLv3 40 bits EXP-RC2-CBC-MD5
Rejected SSLv3 40 bits EXP-ADH-RC4-MD5
Rejected SSLv3 40 bits EXP-RC4-MD5
Rejected SSLv3 0 bits ECDHE-RSA-NULL-SHA
Rejected SSLv3 0 bits ECDHE-ECDSA-NULL-SHA
Rejected SSLv3 0 bits AECDH-NULL-SHA
Rejected SSLv3 0 bits ECDH-RSA-NULL-SHA
Rejected SSLv3 0 bits ECDH-ECDSA-NULL-SHA
Failed SSLv3 0 bits NULL-SHA256
Rejected SSLv3 0 bits NULL-SHA
Rejected SSLv3 0 bits NULL-MD5
Failed TLSv1 256 bits ECDHE-RSA-AES256-GCM-SHA384
Failed TLSv1 256 bits ECDHE-ECDSA-AES256-GCM-SHA384
Failed TLSv1 256 bits ECDHE-RSA-AES256-SHA384
Failed TLSv1 256 bits ECDHE-ECDSA-AES256-SHA384
Rejected TLSv1 256 bits ECDHE-RSA-AES256-SHA
Rejected TLSv1 256 bits ECDHE-ECDSA-AES256-SHA
Failed TLSv1 256 bits SRP-DSS-AES-256-CBC-SHA
Failed TLSv1 256 bits SRP-RSA-AES-256-CBC-SHA
Failed TLSv1 256 bits SRP-AES-256-CBC-SHA
Failed TLSv1 256 bits DHE-DSS-AES256-GCM-SHA384
Failed TLSv1 256 bits DHE-RSA-AES256-GCM-SHA384
Failed TLSv1 256 bits DHE-RSA-AES256-SHA256
Failed TLSv1 256 bits DHE-DSS-AES256-SHA256
Rejected TLSv1 256 bits DHE-RSA-AES256-SHA
Rejected TLSv1 256 bits DHE-DSS-AES256-SHA
Rejected TLSv1 256 bits DHE-RSA-CAMELLIA256-SHA
Rejected TLSv1 256 bits DHE-DSS-CAMELLIA256-SHA
Rejected TLSv1 256 bits AECDH-AES256-SHA
Failed TLSv1 256 bits ADH-AES256-GCM-SHA384
Failed TLSv1 256 bits ADH-AES256-SHA256
Rejected TLSv1 256 bits ADH-AES256-SHA
Rejected TLSv1 256 bits ADH-CAMELLIA256-SHA
Failed TLSv1 256 bits ECDH-RSA-AES256-GCM-SHA384
Failed TLSv1 256 bits ECDH-ECDSA-AES256-GCM-SHA384
Failed TLSv1 256 bits ECDH-RSA-AES256-SHA384
Failed TLSv1 256 bits ECDH-ECDSA-AES256-SHA384
Rejected TLSv1 256 bits ECDH-RSA-AES256-SHA
Rejected TLSv1 256 bits ECDH-ECDSA-AES256-SHA
Failed TLSv1 256 bits AES256-GCM-SHA384
Failed TLSv1 256 bits AES256-SHA256
Rejected TLSv1 256 bits AES256-SHA
Rejected TLSv1 256 bits CAMELLIA256-SHA
Failed TLSv1 256 bits PSK-AES256-CBC-SHA
Rejected TLSv1 168 bits ECDHE-RSA-DES-CBC3-SHA
Rejected TLSv1 168 bits ECDHE-ECDSA-DES-CBC3-SHA
Failed TLSv1 168 bits SRP-DSS-3DES-EDE-CBC-SHA
Failed TLSv1 168 bits SRP-RSA-3DES-EDE-CBC-SHA
Failed TLSv1 168 bits SRP-3DES-EDE-CBC-SHA
Rejected TLSv1 168 bits EDH-RSA-DES-CBC3-SHA
Rejected TLSv1 168 bits EDH-DSS-DES-CBC3-SHA
Rejected TLSv1 168 bits AECDH-DES-CBC3-SHA
Rejected TLSv1 168 bits ADH-DES-CBC3-SHA
Rejected TLSv1 168 bits ECDH-RSA-DES-CBC3-SHA
Rejected TLSv1 168 bits ECDH-ECDSA-DES-CBC3-SHA
Rejected TLSv1 168 bits DES-CBC3-SHA
Failed TLSv1 168 bits PSK-3DES-EDE-CBC-SHA
Failed TLSv1 128 bits ECDHE-RSA-AES128-GCM-SHA256
Failed TLSv1 128 bits ECDHE-ECDSA-AES128-GCM-SHA256
Failed TLSv1 128 bits ECDHE-RSA-AES128-SHA256
Failed TLSv1 128 bits ECDHE-ECDSA-AES128-SHA256
Rejected TLSv1 128 bits ECDHE-RSA-AES128-SHA
Rejected TLSv1 128 bits ECDHE-ECDSA-AES128-SHA
Failed TLSv1 128 bits SRP-DSS-AES-128-CBC-SHA
Failed TLSv1 128 bits SRP-RSA-AES-128-CBC-SHA
Failed TLSv1 128 bits SRP-AES-128-CBC-SHA
Failed TLSv1 128 bits DHE-DSS-AES128-GCM-SHA256
Failed TLSv1 128 bits DHE-RSA-AES128-GCM-SHA256
Failed TLSv1 128 bits DHE-RSA-AES128-SHA256
Failed TLSv1 128 bits DHE-DSS-AES128-SHA256
Rejected TLSv1 128 bits DHE-RSA-AES128-SHA
Rejected TLSv1 128 bits DHE-DSS-AES128-SHA
Rejected TLSv1 128 bits DHE-RSA-SEED-SHA
Rejected TLSv1 128 bits DHE-DSS-SEED-SHA
Rejected TLSv1 128 bits DHE-RSA-CAMELLIA128-SHA
Rejected TLSv1 128 bits DHE-DSS-CAMELLIA128-SHA
Rejected TLSv1 128 bits AECDH-AES128-SHA
Failed TLSv1 128 bits ADH-AES128-GCM-SHA256
Failed TLSv1 128 bits ADH-AES128-SHA256
Rejected TLSv1 128 bits ADH-AES128-SHA
Rejected TLSv1 128 bits ADH-SEED-SHA
Rejected TLSv1 128 bits ADH-CAMELLIA128-SHA
Failed TLSv1 128 bits ECDH-RSA-AES128-GCM-SHA256
Failed TLSv1 128 bits ECDH-ECDSA-AES128-GCM-SHA256
Failed TLSv1 128 bits ECDH-RSA-AES128-SHA256
Failed TLSv1 128 bits ECDH-ECDSA-AES128-SHA256
Rejected TLSv1 128 bits ECDH-RSA-AES128-SHA
Rejected TLSv1 128 bits ECDH-ECDSA-AES128-SHA
Failed TLSv1 128 bits AES128-GCM-SHA256
Failed TLSv1 128 bits AES128-SHA256
Rejected TLSv1 128 bits AES128-SHA
Rejected TLSv1 128 bits SEED-SHA
Rejected TLSv1 128 bits CAMELLIA128-SHA
Failed TLSv1 128 bits PSK-AES128-CBC-SHA
Rejected TLSv1 128 bits ECDHE-RSA-RC4-SHA
Rejected TLSv1 128 bits ECDHE-ECDSA-RC4-SHA
Rejected TLSv1 128 bits AECDH-RC4-SHA
Rejected TLSv1 128 bits ADH-RC4-MD5
Rejected TLSv1 128 bits ECDH-RSA-RC4-SHA
Rejected TLSv1 128 bits ECDH-ECDSA-RC4-SHA
Rejected TLSv1 128 bits RC4-SHA
Rejected TLSv1 128 bits RC4-MD5
Failed TLSv1 128 bits PSK-RC4-SHA
Rejected TLSv1 56 bits EDH-RSA-DES-CBC-SHA
Rejected TLSv1 56 bits EDH-DSS-DES-CBC-SHA
Rejected TLSv1 56 bits ADH-DES-CBC-SHA
Rejected TLSv1 56 bits DES-CBC-SHA
Rejected TLSv1 40 bits EXP-EDH-RSA-DES-CBC-SHA
Rejected TLSv1 40 bits EXP-EDH-DSS-DES-CBC-SHA
Rejected TLSv1 40 bits EXP-ADH-DES-CBC-SHA
Rejected TLSv1 40 bits EXP-DES-CBC-SHA
Rejected TLSv1 40 bits EXP-RC2-CBC-MD5
Rejected TLSv1 40 bits EXP-ADH-RC4-MD5
Rejected TLSv1 40 bits EXP-RC4-MD5
Rejected TLSv1 0 bits ECDHE-RSA-NULL-SHA
Rejected TLSv1 0 bits ECDHE-ECDSA-NULL-SHA
Rejected TLSv1 0 bits AECDH-NULL-SHA
Rejected TLSv1 0 bits ECDH-RSA-NULL-SHA
Rejected TLSv1 0 bits ECDH-ECDSA-NULL-SHA
Failed TLSv1 0 bits NULL-SHA256
Rejected TLSv1 0 bits NULL-SHA
Rejected TLSv1 0 bits NULL-MD5
Update 2 - more detailed curl output
* Hostname was NOT found in DNS cache
* Trying 123.45.67.890...
* Connected to <hidden_hostname> (123.45.67.890) port 443 (#0)
* successfully set certificate verify locations:
* CAfile: none
CApath: /etc/ssl/certs
* SSLv3, TLS handshake, Client hello (1):
* Unknown SSL protocol error in connection to <hidden_hostname>:443
* Closing connection 0
curl: (35) Unknown SSL protocol error in connection to <hidden_hostname>:443
TLSv1.0 is considered insecure and vulnerable.
The default configuration on Jetty (and some versions of Java) has the needed ciphers for TLS 1.0 disabled.
Here's how you can fix it in the short term.
Note: once TLS 1.3 is a reality, and Java supports it, then even this short term fix will not be possible, as TLS 1.3 has plans to outright ban known vulnerable Ciphers from being present for any support level.
You really need to upgrade those clients soon, otherwise you'll be stuck on old java, old jetty, and even old OS installations with no valid option to upgrade any of those.
First, your SslContextFactory has a declared set of exclude ciphers, you'll need to adjust those exclusions to fit your environment the best way possible.
You can do this by redeclaring your excluded ciphers.
SslContextFactory sslContextFactory = new SslContextFactory();
sslContextFactory.setExcludeCipherSuites(
"SSL_DHE_DSS_WITH_DES_CBC_SHA",
"SSL_DHE_DSS_EXPORT_WITH_DES40_CBC_SHA");
If this still doesn't help you, then you likely also have Java level disabled ciphers.
Check the $JAVA_HOME/jre/lib/security/java.security file for any configurations that are disabling "ciphers" or "algorithms" (the name can vary depending on your choice of JVM)
on the one hand i would like to disable as many (weak) ciphers as possible but on the other hand don't want to exclude too many users.
So i read much stuff and saw many examples. Some of them are outdated, some seem wrong and some seem ok.
I finally came out with this (Apache 2.4):
SSLCipherSuite ECDHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-SHA384:DHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES256-SHA:ECDHE-RSA-AES256-SHA:ECDHE-RSA-AES128-SHA
The sslscan result is
Preferred TLSv1.2 256 bits ECDHE-RSA-AES256-GCM-SHA384 Curve P-256 DHE 256
Accepted TLSv1.2 256 bits ECDHE-RSA-AES256-SHA384 Curve P-256 DHE 256
Accepted TLSv1.2 256 bits DHE-RSA-AES256-GCM-SHA384 DHE 2048 bits
Accepted TLSv1.2 256 bits DHE-RSA-AES256-SHA DHE 2048 bits
Accepted TLSv1.2 256 bits ECDHE-RSA-AES256-SHA Curve P-256 DHE 256
Accepted TLSv1.2 128 bits ECDHE-RSA-AES128-SHA Curve P-256 DHE 256
Preferred TLSv1.1 256 bits DHE-RSA-AES256-SHA DHE 2048 bits
Accepted TLSv1.1 256 bits ECDHE-RSA-AES256-SHA Curve P-256 DHE 256
Accepted TLSv1.1 128 bits ECDHE-RSA-AES128-SHA Curve P-256 DHE 256
Preferred TLSv1.0 256 bits DHE-RSA-AES256-SHA DHE 2048 bits
Accepted TLSv1.0 256 bits ECDHE-RSA-AES256-SHA Curve P-256 DHE 256
Accepted TLSv1.0 128 bits ECDHE-RSA-AES128-SHA Curve P-256 DHE 256
The Qualys SSL Scan result for our site is an A+. As far as i can see just very old OS/Browser combinations will have problems with our site.
Question1: Should i enable more than the ciphers above? If so, why?
Question2: Should i disable ciphers, i have got in my list? If so, why?
Thanks,
Bjoern
This trade-off is something that you'll need to evaluate yourself, depending on the clients you're targeting.
We too have an A+ rating and the only browser it doesn't support is IE 6, and Java 6u45 client.
Comparing your security to the likes of popular social networks and banks is a good start, but the tweaking is your call.
Check this generator from Mozilla for standard Modern, Intermediate, and Old configs.
I am attempting to refine the suite of ciphers that my webapp allows.
In Tomcat's server.xml I have the following connector defined:
<Connector port="443" maxHttpHeaderSize="8192"
maxThreads="3000" minSpareThreads="250" maxSpareThreads="500"
enableLookups="false" disableUploadTimeout="true"
acceptCount="1000" connectionTimeout="40000"
scheme="https" secure="true" clientAuth="false" sslProtocol="TLS"
ciphers="SSL_RSA_WITH_RC4_128_MD5, SSL_RSA_WITH_RC4_128_SHA,
TLS_RSA_WITH_AES_128_CBC_SHA, TLS_DHE_RSA_WITH_AES_128_CBC_SHA,
TLS_DHE_DSS_WITH_AES_128_CBC_SHA, SSL_RSA_WITH_3DES_EDE_CBC_SHA,
SSL_DHE_RSA_WITH_3DES_EDE_CBC_SHA, SSL_DHE_DSS_WITH_3DES_EDE_CBC_SHA,
ADH-AES256-SHA, AES256-SHA, DHE-DSS-AES256-SHA, DHE-RSA-AES256-SHA"
keystoreFile="REDACTED" keystorePass="REDACTED" />
The server starts just fine. Everything works. However, when I run sslscan on the server, the 256 bit ciphers show as not being supported.
(Abbreviated, sorted output)
Accepted SSLv3 128 bits AES128-SHA
Accepted SSLv3 128 bits DHE-RSA-AES128-SHA
Accepted SSLv3 128 bits RC4-MD5
Accepted SSLv3 128 bits RC4-SHA
Accepted SSLv3 168 bits DES-CBC3-SHA
Accepted SSLv3 168 bits EDH-RSA-DES-CBC3-SHA
Accepted TLSv1 128 bits AES128-SHA
Accepted TLSv1 128 bits DHE-RSA-AES128-SHA
Accepted TLSv1 128 bits RC4-MD5
Accepted TLSv1 128 bits RC4-SHA
Accepted TLSv1 168 bits DES-CBC3-SHA
Accepted TLSv1 168 bits EDH-RSA-DES-CBC3-SHA
Rejected SSLv3 256 bits ADH-AES256-SHA
Rejected SSLv3 256 bits AES256-SHA
Rejected SSLv3 256 bits DHE-DSS-AES256-SHA
Rejected SSLv3 256 bits DHE-RSA-AES256-SHA
Rejected TLSv1 256 bits ADH-AES256-SHA
Rejected TLSv1 256 bits AES256-SHA
Rejected TLSv1 256 bits DHE-DSS-AES256-SHA
Rejected TLSv1 256 bits DHE-RSA-AES256-SHA
Furthermore, the scan shows that the preferred Server ciphers are "SSLv3 128 bits DHE-RSA-AES128-SHA" and "TLSv1 128 bits DHE-RSA-AES128-SHA". I'm fine if Tomcat would prefer to work at 128 bit ciphers, but I would like to serve any strict clients who happen on by.
What have I overlooked?
Looks like you are using sslscan names, which JSSE doesn't understand. Here are the ciphers supported by Sun JSSE,
SSL_DHE_DSS_EXPORT_WITH_DES40_CBC_SHA
SSL_DHE_DSS_WITH_3DES_EDE_CBC_SHA
SSL_DHE_DSS_WITH_DES_CBC_SHA
SSL_DHE_RSA_EXPORT_WITH_DES40_CBC_SHA
SSL_DHE_RSA_WITH_3DES_EDE_CBC_SHA
SSL_DHE_RSA_WITH_DES_CBC_SHA
SSL_RSA_EXPORT_WITH_DES40_CBC_SHA
SSL_RSA_EXPORT_WITH_RC4_40_MD5
SSL_RSA_WITH_3DES_EDE_CBC_SHA
SSL_RSA_WITH_DES_CBC_SHA
SSL_RSA_WITH_RC4_128_MD5
SSL_RSA_WITH_RC4_128_SHA
TLS_DHE_DSS_WITH_AES_128_CBC_SHA
TLS_DHE_DSS_WITH_AES_256_CBC_SHA
TLS_DHE_RSA_WITH_AES_128_CBC_SHA
TLS_DHE_RSA_WITH_AES_256_CBC_SHA
TLS_RSA_WITH_AES_128_CBC_SHA
TLS_RSA_WITH_AES_256_CBC_SHA