A security issue was discovered in Kubernetes where actors that control the responses of MutatingWebhookConfiguration or ValidatingWebhookConfiguration requests are able to redirect kube-apiserver requests to private networks of the apiserver. If that user can view kube-apiserver logs when the log level is set to 10, they can view the redirected responses and headers in the logs.
{
"versions": [
{
"introduced": "0"
},
{
"last_affected": "1.20.11-NA"
},
{
"introduced": "0"
},
{
"last_affected": "1.21.5-NA"
},
{
"introduced": "0"
},
{
"last_affected": "1.22.2-NA"
}
]
}