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OpenAdvisories

Package · Alpine

k3s

17 known vulnerabilities.

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  • Medium 5.9
    CVE-2023-48795 Public exploit EPSS 94%

    Prefix Truncation Attack against ChaCha20-Poly1305 and Encrypt-then-MAC aka Terrapin

    The SSH transport protocol with certain OpenSSH extensions, found in OpenSSH before 9.6 and other products, allows remote attackers to bypass integrity checks such that some packets are omitted (from the extension negotiation message), and a client and server…

  • Medium 6.5
    CVE-2023-2728 Public exploit

    Bypassing enforce mountable secrets policy imposed by the ServiceAccount admission plugin

    Users may be able to launch containers that bypass the mountable secrets policy enforced by the ServiceAccount admission plugin when using ephemeral containers. The policy ensures pods running with a service account may only reference secrets specified in the…

  • Medium 6.5
    CVE-2021-25735 Public exploit

    Validating Admission Webhook does not observe some previous fields

    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 leas…

  • Medium 6.5

    K3s/RKE2 bootstrap data is encrypted with empty string if user does not supply a token

    K3s in SUSE Rancher allows any user with direct access to the datastore, or a copy of a datastore backup, to extract the cluster's confidential keying material (cluster certificate authority private keys, secrets encryption configuration passphrase, etc.) and…

  • Medium 6.3

    environment variable leak

    In containerd (an industry-standard container runtime) before versions 1.3.10 and 1.4.4, containers launched through containerd's CRI implementation (through Kubernetes, crictl, or any other pod/container client that uses the containerd CRI service) that shar…

  • Medium 5.2
    CVE-2020-15257 Public exploit

    containerd-shim API Exposed to Host Network Containers

    containerd is an industry-standard container runtime and is available as a daemon for Linux and Windows. In containerd before versions 1.3.9 and 1.4.3, the containerd-shim API is improperly exposed to host network containers. Access controls for the shim’s AP…

  • Medium 5.5

    Kubernetes node disk Denial of Service by writing to container /etc/hosts

    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 m…

  • Medium 6.4
    CVE-2020-8559 Public exploit

    Privilege escalation from compromised node to cluster

    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 ful…

  • Medium 6.3

    Kubernetes kube-controller-manager SSRF

    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 in…

  • Medium 6.0
    CVE-2020-10749 Public exploit

    containernetworking/plugins vulnerable to MitM attacks

    A vulnerability was found in all versions of containernetworking/plugins before version 0.8.6, that allows malicious containers in Kubernetes clusters to perform man-in-the-middle (MitM) attacks. A malicious container can exploit this flaw by sending rogue IP…

  • Medium 4.8

    kubectl cp allows symlink directory traversal

    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…

  • Medium 5.0

    Kubernetes kube-apiserver allows access to custom resources via wrong scope

    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…