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Update to set default CipherSuites

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The default CipherSuites need to be set to disable the insecure TLS 1.2 TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 Cipher
This commit is contained in:
Chuck Schweizer 2020-05-13 08:34:45 -05:00
parent 689c2726e2
commit 19c34bd12d
1 changed files with 15 additions and 4 deletions
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19
pkg/cli/server/server.go
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@ -190,13 +190,24 @@ func run(app *cli.Context, cfg *cmds.Server) error {
return errors.Wrapf(err, "Invalid TLS Version %s: %v", TLSMinVersion, err)
}
// TLS config based on mozilla ssl-config generator
// https://ssl-config.mozilla.org/#server=golang&version=1.13.6&config=intermediate&guideline=5.4
// Need to disable the TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 Cipher for TLS1.2
TLSCipherSuites := []string{getArgValueFromList("tls-cipher-suites", cfg.ExtraAPIArgs)}
if len(TLSCipherSuites) != 0 && TLSCipherSuites[0] != "" {
serverConfig.ControlConfig.TLSCipherSuites, err = kubeapiserverflag.TLSCipherSuites(TLSCipherSuites)
if err != nil {
return errors.Wrapf(err, "Invalid TLS Cipher Suites %s: %v", TLSCipherSuites, err)
if len(TLSCipherSuites) == 0 || TLSCipherSuites[0] == "" {
TLSCipherSuites = []string{
"TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384",
"TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384",
"TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256",
"TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256",
"TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305",
"TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305",
}
}
serverConfig.ControlConfig.TLSCipherSuites, err = kubeapiserverflag.TLSCipherSuites(TLSCipherSuites)
if err != nil {
return errors.Wrapf(err, "Invalid TLS Cipher Suites %s: %v", TLSCipherSuites, err)
}
logrus.Info("Starting k3s ", app.App.Version)
notifySocket := os.Getenv("NOTIFY_SOCKET")