One Article Review
| Source |  CVE Liste |
|---|---|
| Identifiant | 2221967 |
| Date de publication | 2021-01-20 22:15:11 (vue: 2021-01-21 00:05:52) |
| Titre | CVE-2020-26278 |
| Texte | Weave Net is open source software which creates a virtual network that connects Docker containers across multiple hosts and enables their automatic discovery. Weave Net before version 2.8.0 has a vulnerability in which can allow an attacker to take over any host in the cluster. Weave Net is supplied with a manifest that runs pods on every node in a Kubernetes cluster, which are responsible for managing network connections for all other pods in the cluster. This requires a lot of power over the host, and the manifest sets `privileged: true`, which gives it that power. It also set `hostPID: true`, which gave it the ability to access all other processes on the host, and write anywhere in the root filesystem of the host. This setting was not necessary, and is being removed. You are only vulnerable if you have an additional vulnerability (e.g. a bug in Kubernetes) or misconfiguration that allows an attacker to run code inside the Weave Net pod, No such bug is known at the time of release, and there are no known instances of this being exploited. Weave Net 2.8.0 removes the hostPID setting and moves CNI plugin install to an init container. Users who do not update to 2.8.0 can edit the hostPID line in their existing DaemonSet manifest to say false instead of true, arrange some other way to install CNI plugins (e.g. Ansible) and remove those mounts from the DaemonSet manifest. |
| Envoyé | Oui |
| Condensat | 2020 26278 `hostpid: `privileged: ability access across additional all allow allows also ansible any anywhere are arrange attacker automatic before being bug can cluster cni code connections connects container containers creates cve daemonset discovery docker edit enables every existing exploited false filesystem from gave gives has have host hostpid hosts init inside install instances instead known kubernetes line lot managing manifest misconfiguration mounts moves multiple necessary net network node not only open other over plugin plugins pod pods power processes release remove removed removes requires responsible root run runs say set sets setting software some source such supplied take those time true true` update users version virtual vulnerability vulnerable way weave which who write |
| Tags | Vulnerability |
| Stories | Uber |
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