CVE-2020-28914 Missing authorization in n/a
Attackers can modify or delete read-only files mounted via Kubernetes hostPath volumes in Kata Containers due to improper guest permissions.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-28914?
CVE-2020-28914 is a high-severity missing authorization vulnerability in n/a, published on 17 Nov 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Weakness: CWE-732
Which versions are affected by CVE-2020-28914?
It affects 1 product.
Products include Katacontainers Kata-Containers.
How do I fix CVE-2020-28914?
Upgrade to a fixed version.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2020-28914 being exploited?
There is no known exploitation of CVE-2020-28914 in the wild and no public exploit code.
Sources
Also known as GHSA-6w62-mvw6-xggx, OESA-2021-1084.