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aquasecurity / kube-bench

Checks whether Kubernetes is deployed according to security best practices as defined in the CIS Kubernetes Benchmark
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Missing GLIBC dependency in binary version 0.7.1+ #1592

Closed pelletier2017 closed 1 month ago

pelletier2017 commented 3 months ago

Overview

On RHEL 7.9, running the kube-bench binary with the command gives a GLIBC error. It works fine on version 0.7.0 and 0.6.19 but breaks in version 0.7.1 and 0.7.2.

How did you run kube-bench?

curl -L https://github.com/aquasecurity/kube-bench/releases/download/v0.7.1/kube-bench_0.7.1_linux_amd64.tar.gz -o kube-bench_0.7.1_linux_amd64.tar.gz
tar -xvf kube-bench_0.7.1_linux_amd64.tar.gz
./kube-bench --config-dir `pwd`/cfg --config `pwd`/cfg/config.yaml

What happened?

It gives this error

./kube-bench: /lib64/libc.so.6: version `GLIBC_2.32' not found (required by ./kube-bench)
./kube-bench: /lib64/libc.so.6: version `GLIBC_2.34' not found (required by ./kube-bench)

What did you expect to happen:

That it would run with all required dependencies similar to version 0.7.0 and 0.6.19.

Environment OS is RHEL 7.9

kube-bench 0.7.1 but the GLIBC error happens even with the command ./kube-bench version

Running with rke2 version v1.28.2+rke2r1 but not sure its running long enough to interact with the cluster.

Running processes

root      1805  1610  2 Apr03 ?        01:03:57 kubelet --volume-plugin-dir=/var/lib/kubelet/volumeplugins --file-check-frequency=5s --sync-frequency=30s --address=0.0.0.0 --anonymous-auth=false --authentication-token-webhook=true --authorization-mode=Webhook --cgroup-driver=cgroupfs --client-ca-file=/var/lib/rancher/rke2/agent/client-ca.crt --cloud-provider=external --cluster-dns=10.43.0.10 --cluster-domain=cluster.local --container-runtime-endpoint=unix:///run/k3s/containerd/containerd.sock --containerd=/run/k3s/containerd/containerd.sock --eviction-hard=imagefs.available<5%,nodefs.available<5% --eviction-minimum-reclaim=imagefs.available=10%,nodefs.available=10% --fail-swap-on=false --healthz-bind-address=127.0.0.1 --hostname-override=ip-10-22-28-22.us-gov-west-1.compute.internal --kubeconfig=/var/lib/rancher/rke2/agent/kubelet.kubeconfig --node-labels= --pod-infra-container-image=index.docker.io/rancher/mirrored-pause:3.6 --pod-manifest-path=/var/lib/rancher/rke2/agent/pod-manifests --read-only-port=0 --resolv-conf=/etc/resolv.conf --serialize-image-pulls=false --tls-cert-file=/var/lib/rancher/rke2/agent/serving-kubelet.crt --tls-private-key-file=/var/lib/rancher/rke2/agent/serving-kubelet.key
root      1994  1942  5 Apr03 ?        02:21:30 kube-apiserver --admission-control-config-file=/etc/rancher/rke2/rke2-pss.yaml --allow-privileged=true --anonymous-auth=false --api-audiences=https://kubernetes.default.svc.cluster.local,rke2 --authorization-mode=Node,RBAC --bind-address=0.0.0.0 --cert-dir=/var/lib/rancher/rke2/server/tls/temporary-certs --client-ca-file=/var/lib/rancher/rke2/server/tls/client-ca.crt --egress-selector-config-file=/var/lib/rancher/rke2/server/etc/egress-selector-config.yaml --enable-admission-plugins=NodeRestriction --enable-aggregator-routing=true --enable-bootstrap-token-auth=true --encryption-provider-config=/var/lib/rancher/rke2/server/cred/encryption-config.json --encryption-provider-config-automatic-reload=true --etcd-cafile=/var/lib/rancher/rke2/server/tls/etcd/server-ca.crt --etcd-certfile=/var/lib/rancher/rke2/server/tls/etcd/client.crt --etcd-keyfile=/var/lib/rancher/rke2/server/tls/etcd/client.key --etcd-servers=https://127.0.0.1:2379 --feature-gates=JobTrackingWithFinalizers=true --kubelet-certificate-authority=/var/lib/rancher/rke2/server/tls/server-ca.crt --kubelet-client-certificate=/var/lib/rancher/rke2/server/tls/client-kube-apiserver.crt --kubelet-client-key=/var/lib/rancher/rke2/server/tls/client-kube-apiserver.key --kubelet-preferred-address-types=InternalIP,ExternalIP,Hostname --profiling=false --proxy-client-cert-file=/var/lib/rancher/rke2/server/tls/client-auth-proxy.crt --proxy-client-key-file=/var/lib/rancher/rke2/server/tls/client-auth-proxy.key --requestheader-allowed-names=system:auth-proxy --requestheader-client-ca-file=/var/lib/rancher/rke2/server/tls/request-header-ca.crt --requestheader-extra-headers-prefix=X-Remote-Extra- --requestheader-group-headers=X-Remote-Group --requestheader-username-headers=X-Remote-User --secure-port=6443 --service-account-issuer=https://kubernetes.default.svc.cluster.local --service-account-key-file=/var/lib/rancher/rke2/server/tls/service.key --service-account-signing-key-file=/var/lib/rancher/rke2/server/tls/service.current.key --service-cluster-ip-range=10.43.0.0/16 --service-node-port-range=30000-32767 --storage-backend=etcd3 --tls-cert-file=/var/lib/rancher/rke2/server/tls/serving-kube-apiserver.crt --tls-cipher-suites=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 --tls-private-key-file=/var/lib/rancher/rke2/server/tls/serving-kube-apiserver.key
root      2128  2022  0 Apr03 ?        00:08:10 kube-scheduler --permit-port-sharing=true --authentication-kubeconfig=/var/lib/rancher/rke2/server/cred/scheduler.kubeconfig --authorization-kubeconfig=/var/lib/rancher/rke2/server/cred/scheduler.kubeconfig --bind-address=127.0.0.1 --kubeconfig=/var/lib/rancher/rke2/server/cred/scheduler.kubeconfig --profiling=false --secure-port=10259
root      2138  2048  1 Apr03 ?        00:44:50 kube-controller-manager --flex-volume-plugin-dir=/var/lib/kubelet/volumeplugins --terminated-pod-gc-threshold=1000 --permit-port-sharing=true --allocate-node-cidrs=true --authentication-kubeconfig=/var/lib/rancher/rke2/server/cred/controller.kubeconfig --authorization-kubeconfig=/var/lib/rancher/rke2/server/cred/controller.kubeconfig --bind-address=127.0.0.1 --cluster-cidr=10.42.0.0/16 --cluster-signing-kube-apiserver-client-cert-file=/var/lib/rancher/rke2/server/tls/client-ca.nochain.crt --cluster-signing-kube-apiserver-client-key-file=/var/lib/rancher/rke2/server/tls/client-ca.key --cluster-signing-kubelet-client-cert-file=/var/lib/rancher/rke2/server/tls/client-ca.nochain.crt --cluster-signing-kubelet-client-key-file=/var/lib/rancher/rke2/server/tls/client-ca.key --cluster-signing-kubelet-serving-cert-file=/var/lib/rancher/rke2/server/tls/server-ca.nochain.crt --cluster-signing-kubelet-serving-key-file=/var/lib/rancher/rke2/server/tls/server-ca.key --cluster-signing-legacy-unknown-cert-file=/var/lib/rancher/rke2/server/tls/server-ca.nochain.crt --cluster-signing-legacy-unknown-key-file=/var/lib/rancher/rke2/server/tls/server-ca.key --configure-cloud-routes=false --controllers=*,tokencleaner,-service,-route,-cloud-node-lifecycle --feature-gates=JobTrackingWithFinalizers=true --kubeconfig=/var/lib/rancher/rke2/server/cred/controller.kubeconfig --profiling=false --root-ca-file=/var/lib/rancher/rke2/server/tls/server-ca.crt --secure-port=10257 --service-account-private-key-file=/var/lib/rancher/rke2/server/tls/service.current.key --service-cluster-ip-range=10.43.0.0/16 --use-service-account-credentials=true
root      2308  2257  0 Apr03 ?        00:01:36 kube-proxy --cluster-cidr=10.42.0.0/16 --conntrack-max-per-core=0 --conntrack-tcp-timeout-close-wait=0s --conntrack-tcp-timeout-established=0s --healthz-bind-address=127.0.0.1 --hostname-override=ip-10-22-28-22.us-gov-west-1.compute.internal --kubconfig=/var/lib/rancher/rke2/agent/kubeproxy.kubeconfig --proxy-mode=iptables
root      2382  2176  0 Apr03 ?        00:07:04 cloud-controller-manager --allocate-node-cidrs=true --authentication-kubeconfig=/var/lib/rancher/rke2/server/cred/cloud-controller.kubeconfig --authorization-kubeconfig=/var/lib/rancher/rke2/server/cred/cloud-controller.kubeconfig --bind-address=127.0.0.1 --cloud-config=/var/lib/rancher/rke2/server/etc/cloud-config.yaml --cloud-provider=rke2 --cluster-cidr=10.42.0.0/16 --configure-cloud-routes=false --controllers=*,-route,-service --kubeconfig=/var/lib/rancher/rke2/server/cred/cloud-controller.kubeconfig --leader-elect-resource-name=rke2-cloud-controller-manager --node-status-update-frequency=1m0s --profiling=false
root      3913  2979  0 Apr03 ?        00:03:35 /opt/bin/flanneld --ip-masq --kube-subnet-mgr
root      5018  4669  0 Apr03 ?        00:00:33 /cluster-proportional-autoscaler --namespace=kube-system --configmap=rke2-coredns-rke2-coredns-autoscaler --target=Deployment/rke2-coredns-rke2-coredns --logtostderr=true --v=2
10001     5742  5569  0 Apr03 ?        00:07:08 /metrics-server --cert-dir=/tmp --logtostderr --secure-port=10250 --kubelet-use-node-status-port --metric-resolution=15s --kubelet-preferred-address-types=InternalIP
ec2-user  6173  6058  0 Apr03 ?        00:01:04 /snapshot-controller --http-endpoint=:8080 --leader-election=true --leader-election-namespace=kube-system

Configuration files

No config files were modified from the release.

Anything else you would like to add:

N/A

noovertime7 commented 3 months ago

I had the same problem. Have you solved it? @pelletier2017