Rapid7 Vulnerability & Exploit Database

Kubernetes: CVE-2021-25741: Symlink Exchange Can Allow Host Filesystem Access

Free InsightVM Trial No Credit Card Necessary
2024 Attack Intel Report Latest research by Rapid7 Labs
Back to Search

Kubernetes: CVE-2021-25741: Symlink Exchange Can Allow Host Filesystem Access

Severity
6
CVSS
(AV:N/AC:L/Au:S/C:P/I:P/A:N)
Published
09/20/2021
Created
03/11/2022
Added
03/10/2022
Modified
11/19/2024

Description

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.

Solution(s)

  • kubernetes-upgrade-1_19_15
  • kubernetes-upgrade-1_20_11
  • kubernetes-upgrade-1_21_5
  • kubernetes-upgrade-1_22_2

References

insightVM

Advanced vulnerability management analytics and reporting.
Key Features
  • Lightweight Endpoint Agent
  • Live Dashboards
  • Real Risk Prioritization
  • IT-Integrated Remediation Projects
  • Cloud, Virtual, and Container Assessment
  • Integrated Threat Feeds
  • Easy-to-Use RESTful API
  • Automation-Assisted Patching
  • Automated Containment
Free InsightVM Trial View All Features

With Rapid7 live dashboards, I have a clear view of all the assets on my network, which ones can be exploited, and what I need to do in order to reduce the risk in my environment in real-time. No other tool gives us that kind of value and insight.

– Scott Cheney, Manager of Information Security, Sierra View Medical Center

;