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Allow TLS 1.2 with restricted ciphers for webhooks #3318

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merged 1 commit into from
Aug 9, 2023
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Allow TLS 1.2 with restricted ciphers for webhooks #3318

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17 changes: 16 additions & 1 deletion pkg/config/runtime_config.go
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Original file line number Diff line number Diff line change
@@ -1,6 +1,7 @@
package config

import (
"crypto/tls"
"time"

"github.com/spf13/pflag"
Expand Down Expand Up @@ -131,5 +132,19 @@ func BuildRuntimeOptions(rtCfg RuntimeConfig, scheme *runtime.Scheme) ctrl.Optio
func ConfigureWebhookServer(rtCfg RuntimeConfig, mgr ctrl.Manager) {
mgr.GetWebhookServer().CertName = rtCfg.WebhookCertName
mgr.GetWebhookServer().KeyName = rtCfg.WebhookKeyName
mgr.GetWebhookServer().TLSMinVersion = "1.3"
mgr.GetWebhookServer().TLSOpts = []func(config *tls.Config){
func(config *tls.Config) {
config.MinVersion = tls.VersionTLS12
config.CipherSuites = []uint16{
// AEADs w/ ECDHE
tls.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256, tls.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
tls.TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384, tls.TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,
tls.TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305, tls.TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,

// AEADs w/o ECDHE
tls.TLS_RSA_WITH_AES_128_GCM_SHA256,
tls.TLS_RSA_WITH_AES_256_GCM_SHA384,
}
},
}
}
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