GHSA-f5f7-6478-qm6p

Files or Directories Accessible to External Parties in kubernetes

Source: GitHub Advisory Database (reviewed) High CVE-2021-25741

Packages

Ecosystem	Package	Affected	Fixed in
Go	k8s.io/kubernetes	< 1.19.15	1.19.15
Go	k8s.io/kubernetes	>= 1.20.0, < 1.20.11	1.20.11
Go	k8s.io/kubernetes	>= 1.21.0, < 1.21.5	1.21.5
Go	k8s.io/kubernetes	>= 1.22.0, < 1.22.2	1.22.2

Details

As written in the advisory (Markdown source, shown as plain text).

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.

References

External links from the advisory. They lead to third-party sites.

https://github.com/bottlerocket-os/bottlerocket/security/advisories/GHSA-f5f7-6478-qm6p web
https://nvd.nist.gov/vuln/detail/CVE-2021-25741 advisory
https://github.com/kubernetes/kubernetes/issues/104980 web
https://github.com/kubernetes/kubernetes package
https://groups.google.com/g/kubernetes-security-announce/c/nyfdhK24H7s web
https://security.netapp.com/advisory/ntap-20211008-0006 web