CVE-2023-44392 Arbitrary code execution vulnerability when using shared Kubernetes cluster
An attacker with Kubernetes cluster access can achieve remote code execution on a developer's machine by injecting malicious serialized objects into cached ConfigMaps.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2023-44392?
CVE-2023-44392 is a high-severity unsafe deserialization vulnerability in garden-io garden, published on 9 Oct 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
Garden provides automation for Kubernetes development and testing. Prior tov ersions 0.13.17 and 0.12.65, Garden has a dependency on the cryo library, which is vulnerable to code injection due to an insecure implementation of deserialization. Garden stores serialized objects using cryo in the Kubernetes `ConfigMap` resources prefixed with `test-result` and `run-result` to cache Garden test and run results. These `ConfigMaps` are stored either in the `garden-system` namespace or the configured user namespace. When a user invokes the command `garden test` or `garden run` objects stored in the `ConfigMap` are retrieved and deserialized. This can be used by an attacker with access to the Kubernetes cluster to store malicious objects in the `ConfigMap`, which can trigger a remote code execution on the users machine when cryo deserializes the object. In order to exploit this vulnerability, an attacker must have access to the Kubernetes cluster used to deploy garden remote environments. Further, a user must actively invoke either a `garden test` or `garden run` which has previously cached results. The issue has been patched in Garden versions `0.13.17` (Bonsai) and `0.12.65` (Acorn). Only Garden versions prior to these are vulnerable. No known workarounds are available.
Which versions are affected by CVE-2023-44392?
It affects 1 product.
Products include Garden Garden.
How do I fix CVE-2023-44392?
No fix has been published for CVE-2023-44392 yet. Limit exposure of the affected software until one is available.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2023-44392 being exploited?
There is no known exploitation of CVE-2023-44392 in the wild and no public exploit code.
Other vulnerabilities in garden-io garden
Sources
Also known as GHSA-hm75-6vc9-8rpr.