siderolabs omni up to 1.0.1/1.1.4 Resource Service isSensitiveSpec improper check or handling of exceptional conditions

Summaryinfo

A vulnerability was found in siderolabs omni up to 1.0.1/1.1.4. It has been classified as problematic. Affected is the function isSensitiveSpec of the component Resource Service. The manipulation leads to improper check or handling of exceptional conditions. This vulnerability is documented as CVE-2025-59836. The attack can be initiated remotely. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in siderolabs omni up to 1.0.1/1.1.4. This issue affects the function isSensitiveSpec of the component Resource Service. The manipulation with an unknown input leads to a improper check or handling of exceptional conditions vulnerability. Using CWE to declare the problem leads to CWE-703. The product does not properly anticipate or handle exceptional conditions that rarely occur during normal operation of the product. Impacted is availability. The summary by CVE is:

Omni manages Kubernetes on bare metal, virtual machines, or in a cloud. Prior to 1.1.5 and 1.0.2, there is a nil pointer dereference vulnerability in the Omni Resource Service allows unauthenticated users to cause a server panic and denial of service by sending empty create/update resource requests through the API endpoints. The vulnerability exists in the isSensitiveSpec function which calls grpcomni.CreateResource without checking if the resource's metadata field is nil. When a resource is created with an empty Metadata field, the CreateResource function attempts to access resource.Metadata.Version causing a segmentation fault. This vulnerability is fixed in 1.1.5 and 1.0.2.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2025-59836 since 09/22/2025. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 1.0.2 or 1.1.5 eliminates this vulnerability. Applying the patch 1396083f766a1b0380e9949968d7fc17b7afecaa is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-34081). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

• siderolabs

Name

• omni

Version

• 1.0.0
• 1.0.1
• 1.1.0
• 1.1.1
• 1.1.2
• 1.1.3
• 1.1.4

License

• open-source

Website

• Product: https://github.com/siderolabs/omni/

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