What’s Vulnerable › Vulnerabilities

CVE-2020-28914

• Severity: high (CVSS 7.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-11-17 · updated 2026-06-17
• Weakness: CWE-732

Description

An improper file permissions vulnerability affects Kata Containers prior to 1.11.5. When using a Kubernetes hostPath volume and mounting either a file or directory into a container as readonly, the file/directory is mounted as readOnly inside the container, but is still writable inside the guest. For a container breakout situation, a malicious guest can potentially modify or delete files/directories expected to be read-only.

Affected products

• Katacontainers Kata-Containers: before 1.11.5 — fixed in 1.11.5

How to fix

Upgrade to a fixed version: Katacontainers Kata-Containers 1.11.5. Check the vendor advisory for mitigations.

References

• https://github.com/kata-containers/kata-containers/pull/1062
• https://github.com/kata-containers/runtime/pull/3042
• https://github.com/kata-containers/runtime/pull/3051
• https://github.com/kata-containers/runtime/releases/tag/1.11.5
• https://github.com/kata-containers/runtime/releases/tag/1.12.0
• https://github.com/kata-containers/kata-containers/pull/1062
• https://github.com/kata-containers/runtime/pull/3042
• https://github.com/kata-containers/runtime/pull/3051
• https://github.com/kata-containers/runtime/releases/tag/1.11.5
• https://github.com/kata-containers/runtime/releases/tag/1.12.0

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