Kubernetes » Kubernetes : Security Vulnerabilities

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#	CVE ID	CWE ID	Vulnerability Type(s)	Publish Date	Update Date	Score	Gained Access Level	Access	Complexity	Authentication	Conf.	Integ.	Avail.
1	CVE-2022-3294		Bypass	2023-03-01	2023-05-05	0.0	None	???	???	???	???	???	???
Users may have access to secure endpoints in the control plane network. Kubernetes clusters are only affected if an untrusted user can modify Node objects and send proxy requests to them. Kubernetes supports node proxying, which allows clients of kube-apiserver to access endpoints of a Kubelet to establish connections to Pods, retrieve container logs, and more. While Kubernetes already validates the proxying address for Nodes, a bug in kube-apiserver made it possible to bypass this validation. Bypassing this validation could allow authenticated requests destined for Nodes to to the API server's private network.
2	CVE-2022-3162	22	Dir. Trav.	2023-03-01	2023-05-11	0.0	None	???	???	???	???	???	???
Users authorized to list or watch one type of namespaced custom resource cluster-wide can read custom resources of a different type in the same API group without authorization. Clusters are impacted by this vulnerability if all of the following are true: 1. There are 2+ CustomResourceDefinitions sharing the same API group 2. Users have cluster-wide list or watch authorization on one of those custom resources. 3. The same users are not authorized to read another custom resource in the same API group.
3	CVE-2021-25749			2023-05-24	2023-06-01	0.0	None	???	???	???	???	???	???
Windows workloads can run as ContainerAdministrator even when those workloads set the runAsNonRoot option to true.
4	CVE-2021-25743			2022-01-07	2022-02-28	2.1	None	Remote	High	???	None	Partial	None
kubectl does not neutralize escape, meta or control sequences contained in the raw data it outputs to a terminal. This includes but is not limited to the unstructured string fields in objects such as Events.
5	CVE-2021-25741	552		2021-09-20	2021-11-30	5.5	None	Remote	Low	???	Partial	Partial	None
A security issue was discovered in Kubernetes where a user may be able to create a container with subpath volume mounts to access files & directories outside of the volume, including on the host filesystem.
6	CVE-2021-25740	610		2021-09-20	2021-11-06	3.5	None	Remote	Medium	???	Partial	None	None
A security issue was discovered with Kubernetes that could enable users to send network traffic to locations they would otherwise not have access to via a confused deputy attack.
7	CVE-2021-25737	601		2021-09-06	2021-10-07	4.9	None	Remote	Medium	???	Partial	Partial	None
A security issue was discovered in Kubernetes where a user may be able to redirect pod traffic to private networks on a Node. Kubernetes already prevents creation of Endpoint IPs in the localhost or link-local range, but the same validation was not performed on EndpointSlice IPs.
8	CVE-2021-25735	863	Bypass	2021-09-06	2021-09-13	5.5	None	Remote	Low	???	None	Partial	Partial
A security issue was discovered in kube-apiserver that could allow node updates to bypass a Validating Admission Webhook. Clusters are only affected by this vulnerability if they run a Validating Admission Webhook for Nodes that denies admission based at least partially on the old state of the Node object. Validating Admission Webhook does not observe some previous fields.
9	CVE-2020-8566	532		2020-12-07	2021-03-29	2.1	None	Local	Low	Not required	Partial	None	None
In Kubernetes clusters using Ceph RBD as a storage provisioner, with logging level of at least 4, Ceph RBD admin secrets can be written to logs. This occurs in kube-controller-manager's logs during provisioning of Ceph RBD persistent claims. This affects < v1.19.3, < v1.18.10, < v1.17.13.
10	CVE-2020-8565	532		2020-12-07	2020-12-08	2.1	None	Local	Low	Not required	Partial	None	None
In Kubernetes, if the logging level is set to at least 9, authorization and bearer tokens will be written to log files. This can occur both in API server logs and client tool output like kubectl. This affects <= v1.19.3, <= v1.18.10, <= v1.17.13, < v1.20.0-alpha2.
11	CVE-2020-8564	532		2020-12-07	2021-03-29	2.1	None	Local	Low	Not required	Partial	None	None
In Kubernetes clusters using a logging level of at least 4, processing a malformed docker config file will result in the contents of the docker config file being leaked, which can include pull secrets or other registry credentials. This affects < v1.19.3, < v1.18.10, < v1.17.13.
12	CVE-2020-8563	532		2020-12-07	2021-03-29	2.1	None	Local	Low	Not required	Partial	None	None
In Kubernetes clusters using VSphere as a cloud provider, with a logging level set to 4 or above, VSphere cloud credentials will be leaked in the cloud controller manager's log. This affects < v1.19.3.
13	CVE-2020-8562	367	Bypass	2022-02-01	2022-03-29	3.5	None	Remote	Medium	???	Partial	None	None
As mitigations to a report from 2019 and CVE-2020-8555, Kubernetes attempts to prevent proxied connections from accessing link-local or localhost networks when making user-driven connections to Services, Pods, Nodes, or StorageClass service providers. As part of this mitigation Kubernetes does a DNS name resolution check and validates that response IPs are not in the link-local (169.254.0.0/16) or localhost (127.0.0.0/8) range. Kubernetes then performs a second DNS resolution without validation for the actual connection. If a non-standard DNS server returns different non-cached responses, a user may be able to bypass the proxy IP restriction and access private networks on the control plane.
14	CVE-2020-8561	610		2021-09-20	2021-11-06	4.0	None	Remote	Low	???	Partial	None	None
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.
15	CVE-2020-8559	601		2020-07-22	2023-01-27	6.0	None	Remote	Medium	???	Partial	Partial	Partial
The Kubernetes kube-apiserver in versions v1.6-v1.15, and versions prior to v1.16.13, v1.17.9 and v1.18.6 are vulnerable to an unvalidated redirect on proxied upgrade requests that could allow an attacker to escalate privileges from a node compromise to a full cluster compromise.
16	CVE-2020-8558			2020-07-27	2022-09-20	5.8	None	Local Network	Low	Not required	Partial	Partial	Partial
The Kubelet and kube-proxy components in versions 1.1.0-1.16.10, 1.17.0-1.17.6, and 1.18.0-1.18.3 were found to contain a security issue which allows adjacent hosts to reach TCP and UDP services bound to 127.0.0.1 running on the node or in the node's network namespace. Such a service is generally thought to be reachable only by other processes on the same host, but due to this defeect, could be reachable by other hosts on the same LAN as the node, or by containers running on the same node as the service.
17	CVE-2020-8557	400		2020-07-23	2023-01-27	2.1	None	Local	Low	Not required	None	None	Partial
The Kubernetes kubelet component in versions 1.1-1.16.12, 1.17.0-1.17.8 and 1.18.0-1.18.5 do not account for disk usage by a pod which writes to its own /etc/hosts file. The /etc/hosts file mounted in a pod by kubelet is not included by the kubelet eviction manager when calculating ephemeral storage usage by a pod. If a pod writes a large amount of data to the /etc/hosts file, it could fill the storage space of the node and cause the node to fail.
18	CVE-2020-8555	918	+Info	2020-06-05	2022-11-16	3.5	None	Remote	Medium	???	Partial	None	None
The Kubernetes kube-controller-manager in versions v1.0-1.14, versions prior to v1.15.12, v1.16.9, v1.17.5, and version v1.18.0 are vulnerable to a Server Side Request Forgery (SSRF) that allows certain authorized users to leak up to 500 bytes of arbitrary information from unprotected endpoints within the master's host network (such as link-local or loopback services).
19	CVE-2020-8554			2021-01-21	2022-10-29	6.0	None	Remote	Medium	???	Partial	Partial	Partial
Kubernetes API server in all versions allow an attacker who is able to create a ClusterIP service and set the spec.externalIPs field, to intercept traffic to that IP address. Additionally, an attacker who is able to patch the status (which is considered a privileged operation and should not typically be granted to users) of a LoadBalancer service can set the status.loadBalancer.ingress.ip to similar effect.
20	CVE-2020-8552	770	DoS	2020-03-27	2023-01-27	4.0	None	Remote	Low	???	None	None	Partial
The Kubernetes API server component in versions prior to 1.15.9, 1.16.0-1.16.6, and 1.17.0-1.17.2 has been found to be vulnerable to a denial of service attack via successful API requests.
21	CVE-2020-8551	770	DoS	2020-03-27	2023-01-27	3.3	None	Local Network	Low	Not required	None	None	Partial
The Kubelet component in versions 1.15.0-1.15.9, 1.16.0-1.16.6, and 1.17.0-1.17.2 has been found to be vulnerable to a denial of service attack via the kubelet API, including the unauthenticated HTTP read-only API typically served on port 10255, and the authenticated HTTPS API typically served on port 10250.
22	CVE-2019-1002101	59		2019-04-01	2020-02-10	5.8	None	Remote	Medium	Not required	None	Partial	Partial
The kubectl cp command allows copying files between containers and the user machine. To copy files from a container, Kubernetes creates a tar inside the container, copies it over the network, and kubectl unpacks it on the user’s machine. If the tar binary in the container is malicious, it could run any code and output unexpected, malicious results. An attacker could use this to write files to any path on the user’s machine when kubectl cp is called, limited only by the system permissions of the local user. The untar function can both create and follow symbolic links. The issue is resolved in kubectl v1.11.9, v1.12.7, v1.13.5, and v1.14.0.
23	CVE-2019-1002100	770	DoS	2019-04-01	2023-03-01	4.0	None	Remote	Low	???	None	None	Partial
In all Kubernetes versions prior to v1.11.8, v1.12.6, and v1.13.4, users that are authorized to make patch requests to the Kubernetes API Server can send a specially crafted patch of type "json-patch" (e.g. `kubectl patch --type json` or `"Content-Type: application/json-patch+json"`) that consumes excessive resources while processing, causing a Denial of Service on the API Server.
24	CVE-2019-11254			2020-04-01	2020-10-02	4.0	None	Remote	Low	???	None	None	Partial
The Kubernetes API Server component in versions 1.1-1.14, and versions prior to 1.15.10, 1.16.7 and 1.17.3 allows an authorized user who sends malicious YAML payloads to cause the kube-apiserver to consume excessive CPU cycles while parsing YAML.
25	CVE-2019-11253	776		2019-10-17	2020-10-02	5.0	None	Remote	Low	Not required	None	None	Partial
Improper input validation in the Kubernetes API server in versions v1.0-1.12 and versions prior to v1.13.12, v1.14.8, v1.15.5, and v1.16.2 allows authorized users to send malicious YAML or JSON payloads, causing the API server to consume excessive CPU or memory, potentially crashing and becoming unavailable. Prior to v1.14.0, default RBAC policy authorized anonymous users to submit requests that could trigger this vulnerability. Clusters upgraded from a version prior to v1.14.0 keep the more permissive policy by default for backwards compatibility.
26	CVE-2019-11252	209		2020-07-23	2020-07-28	5.0	None	Remote	Low	Not required	Partial	None	None
The Kubernetes kube-controller-manager in versions v1.0-v1.17 is vulnerable to a credential leakage via error messages in mount failure logs and events for AzureFile and CephFS volumes.
27	CVE-2019-11251	59		2020-02-03	2020-02-06	4.3	None	Remote	Medium	Not required	None	Partial	None
The Kubernetes kubectl cp command in versions 1.1-1.12, and versions prior to 1.13.11, 1.14.7, and 1.15.4 allows a combination of two symlinks provided by tar output of a malicious container to place a file outside of the destination directory specified in the kubectl cp invocation. This could be used to allow an attacker to place a nefarious file using a symlink, outside of the destination tree.
28	CVE-2019-11250	532		2019-08-29	2020-10-16	3.5	None	Remote	Medium	???	Partial	None	None
The Kubernetes client-go library logs request headers at verbosity levels of 7 or higher. This can disclose credentials to unauthorized users via logs or command output. Kubernetes components (such as kube-apiserver) prior to v1.16.0, which make use of basic or bearer token authentication, and run at high verbosity levels, are affected.
29	CVE-2019-11249	22	Dir. Trav.	2019-08-29	2020-10-02	5.8	None	Remote	Medium	Not required	None	Partial	Partial
The kubectl cp command allows copying files between containers and the user machine. To copy files from a container, Kubernetes runs tar inside the container to create a tar archive, copies it over the network, and kubectl unpacks it on the user’s machine. If the tar binary in the container is malicious, it could run any code and output unexpected, malicious results. An attacker could use this to write files to any path on the user’s machine when kubectl cp is called, limited only by the system permissions of the local user. Kubernetes affected versions include versions prior to 1.13.9, versions prior to 1.14.5, versions prior to 1.15.2, and versions 1.1, 1.2, 1.4, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 1.10, 1.11, 1.12.
30	CVE-2019-11248	862	DoS +Info	2019-08-29	2020-10-05	6.4	None	Remote	Low	Not required	Partial	None	Partial
The debugging endpoint /debug/pprof is exposed over the unauthenticated Kubelet healthz port. The go pprof endpoint is exposed over the Kubelet's healthz port. This debugging endpoint can potentially leak sensitive information such as internal Kubelet memory addresses and configuration, or for limited denial of service. Versions prior to 1.15.0, 1.14.4, 1.13.8, and 1.12.10 are affected. The issue is of medium severity, but not exposed by the default configuration.
31	CVE-2019-11247	863		2019-08-29	2020-10-02	6.5	None	Remote	Low	???	Partial	Partial	Partial
The Kubernetes kube-apiserver mistakenly allows access to a cluster-scoped custom resource if the request is made as if the resource were namespaced. Authorizations for the resource accessed in this manner are enforced using roles and role bindings within the namespace, meaning that a user with access only to a resource in one namespace could create, view update or delete the cluster-scoped resource (according to their namespace role privileges). Kubernetes affected versions include versions prior to 1.13.9, versions prior to 1.14.5, versions prior to 1.15.2, and versions 1.7, 1.8, 1.9, 1.10, 1.11, 1.12.
32	CVE-2019-11246	22	Dir. Trav.	2019-08-29	2020-10-02	4.3	None	Remote	Medium	Not required	None	Partial	None
The kubectl cp command allows copying files between containers and the user machine. To copy files from a container, Kubernetes runs tar inside the container to create a tar archive, copies it over the network, and kubectl unpacks it on the user’s machine. If the tar binary in the container is malicious, it could run any code and output unexpected, malicious results. An attacker could use this to write files to any path on the user’s machine when kubectl cp is called, limited only by the system permissions of the local user. Kubernetes affected versions include versions prior to 1.12.9, versions prior to 1.13.6, versions prior to 1.14.2, and versions 1.1, 1.2, 1.4, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 1.10, 1.11.
33	CVE-2019-11245	264		2019-08-29	2019-09-19	4.6	None	Local	Low	Not required	Partial	Partial	Partial
In kubelet v1.13.6 and v1.14.2, containers for pods that do not specify an explicit runAsUser attempt to run as uid 0 (root) on container restart, or if the image was previously pulled to the node. If the pod specified mustRunAsNonRoot: true, the kubelet will refuse to start the container as root. If the pod did not specify mustRunAsNonRoot: true, the kubelet will run the container as uid 0.
34	CVE-2019-11244	732		2019-04-22	2020-10-02	1.9	None	Local	Medium	Not required	None	Partial	None
In Kubernetes v1.8.x-v1.14.x, schema info is cached by kubectl in the location specified by --cache-dir (defaulting to $HOME/.kube/http-cache), written with world-writeable permissions (rw-rw-rw-). If --cache-dir is specified and pointed at a different location accessible to other users/groups, the written files may be modified by other users/groups and disrupt the kubectl invocation.
35	CVE-2019-11243	212		2019-04-22	2020-10-02	4.3	None	Remote	Medium	Not required	Partial	None	None
In Kubernetes v1.12.0-v1.12.4 and v1.13.0, the rest.AnonymousClientConfig() method returns a copy of the provided config, with credentials removed (bearer token, username/password, and client certificate/key data). In the affected versions, rest.AnonymousClientConfig() did not effectively clear service account credentials loaded using rest.InClusterConfig()
36	CVE-2019-9946	670		2019-04-02	2020-08-24	5.0	None	Remote	Low	Not required	None	Partial	None
Cloud Native Computing Foundation (CNCF) CNI (Container Networking Interface) 0.7.4 has a network firewall misconfiguration which affects Kubernetes. The CNI 'portmap' plugin, used to setup HostPorts for CNI, inserts rules at the front of the iptables nat chains; which take precedence over the KUBE- SERVICES chain. Because of this, the HostPort/portmap rule could match incoming traffic even if there were better fitting, more specific service definition rules like NodePorts later in the chain. The issue is fixed in CNI 0.7.5 and Kubernetes 1.11.9, 1.12.7, 1.13.5, and 1.14.0.
37	CVE-2018-1002105	388		2018-12-05	2019-06-28	7.5	None	Remote	Low	Not required	Partial	Partial	Partial
In all Kubernetes versions prior to v1.10.11, v1.11.5, and v1.12.3, incorrect handling of error responses to proxied upgrade requests in the kube-apiserver allowed specially crafted requests to establish a connection through the Kubernetes API server to backend servers, then send arbitrary requests over the same connection directly to the backend, authenticated with the Kubernetes API server's TLS credentials used to establish the backend connection.
38	CVE-2018-1002102	601		2019-12-05	2020-01-16	2.1	None	Remote	High	???	Partial	None	None
Improper validation of URL redirection in the Kubernetes API server in versions prior to v1.14.0 allows an attacker-controlled Kubelet to redirect API server requests from streaming endpoints to arbitrary hosts. Impacted API servers will follow the redirect as a GET request with client-certificate credentials for authenticating to the Kubelet.
39	CVE-2018-1002101			2018-12-05	2019-10-09	7.5	None	Remote	Low	Not required	Partial	Partial	Partial
In Kubernetes versions 1.9.0-1.9.9, 1.10.0-1.10.5, and 1.11.0-1.11.1, user input was handled insecurely while setting up volume mounts on Windows nodes, which could lead to command line argument injection.
40	CVE-2018-1002100	20		2018-06-02	2019-10-09	3.6	None	Local	Low	Not required	None	Partial	Partial
In Kubernetes versions 1.5.x, 1.6.x, 1.7.x, 1.8.x, and prior to version 1.9.6, the kubectl cp command insecurely handles tar data returned from the container, and can be caused to overwrite arbitrary local files.
41	CVE-2017-1002102			2018-03-13	2019-10-09	6.3	None	Local	Medium	Not required	None	Complete	Complete
In Kubernetes versions 1.3.x, 1.4.x, 1.5.x, 1.6.x and prior to versions 1.7.14, 1.8.9 and 1.9.4 containers using a secret, configMap, projected or downwardAPI volume can trigger deletion of arbitrary files/directories from the nodes where they are running.
42	CVE-2017-1002101	59		2018-03-13	2019-10-09	5.5	None	Remote	Low	???	Partial	Partial	None
In Kubernetes versions 1.3.x, 1.4.x, 1.5.x, 1.6.x and prior to versions 1.7.14, 1.8.9 and 1.9.4 containers using subpath volume mounts with any volume type (including non-privileged pods, subject to file permissions) can access files/directories outside of the volume, including the host's filesystem.
43	CVE-2017-1002100	200	+Info	2017-09-14	2017-09-29	4.0	None	Remote	Low	???	Partial	None	None
Default access permissions for Persistent Volumes (PVs) created by the Kubernetes Azure cloud provider in versions 1.6.0 to 1.6.5 are set to "container" which exposes a URI that can be accessed without authentication on the public internet. Access to the URI string requires privileged access to the Kubernetes cluster or authenticated access to the Azure portal.
44	CVE-2017-1000056	862		2017-07-17	2019-10-03	7.5	None	Remote	Low	Not required	Partial	Partial	Partial
Kubernetes version 1.5.0-1.5.4 is vulnerable to a privilege escalation in the PodSecurityPolicy admission plugin resulting in the ability to make use of any existing PodSecurityPolicy object.
45	CVE-2016-7075	295	Bypass	2018-09-10	2023-02-12	6.8	None	Remote	Medium	Not required	Partial	Partial	Partial
It was found that Kubernetes as used by Openshift Enterprise 3 did not correctly validate X.509 client intermediate certificate host name fields. An attacker could use this flaw to bypass authentication requirements by using a specially crafted X.509 certificate.
46	CVE-2016-1906	264	+Priv	2016-02-03	2023-02-13	10.0	None	Remote	Low	Not required	Complete	Complete	Complete
Openshift allows remote attackers to gain privileges by updating a build configuration that was created with an allowed type to a type that is not allowed.
47	CVE-2016-1905	284		2016-02-03	2023-02-12	4.0	None	Remote	Low	???	None	Partial	None
The API server in Kubernetes does not properly check admission control, which allows remote authenticated users to access additional resources via a crafted patched object.
48	CVE-2015-7561	264		2017-08-07	2021-06-03	3.5	None	Remote	Medium	???	Partial	None	None
Kubernetes in OpenShift3 allows remote authenticated users to use the private images of other users should they know the name of said image.
49	CVE-2015-7528	200	+Info	2016-04-11	2023-02-12	5.0	None	Remote	Low	Not required	Partial	None	None
Kubernetes before 1.2.0-alpha.5 allows remote attackers to read arbitrary pod logs via a container name.

Total number of vulnerabilities : 49 Page : 1 (This Page)