Tekton Pipeline data authenticity

Summaryinfo

A vulnerability was found in Tekton Pipeline. It has been classified as problematic. Impacted is an unknown function. The manipulation leads to data authenticity. This vulnerability is referenced as CVE-2023-37264. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in Tekton Pipeline (unknown version). It has been rated as problematic. This issue affects an unknown code block. The manipulation with an unknown input leads to a data authenticity vulnerability. Using CWE to declare the problem leads to CWE-345. The product does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Tekton Pipelines project provides k8s-style resources for declaring CI/CD-style pipelines. Starting in version 0.35.0, pipelines do not validate child UIDs, which means that a user that has access to create TaskRuns can create their own Tasks that the Pipelines controller will accept as the child Task. While the software stores and validates the PipelineRun's (api version, kind, name, uid) in the child Run's OwnerReference, it only store (api version, kind, name) in the ChildStatusReference. This means that if a client had access to create TaskRuns on a cluster, they could create a child TaskRun for a pipeline with the same name + owner reference, and the Pipeline controller picks it up as if it was the original TaskRun. This is problematic since it can let users modify the config of Pipelines at runtime, which violates SLSA L2 Service Generated / Non-falsifiable requirements. This issue can be used to trick the Pipeline controller into associating unrelated Runs to the Pipeline, feeding its data through the rest of the Pipeline. This requires access to create TaskRuns, so impact may vary depending on one Tekton setup. If users already have unrestricted access to create any Task/PipelineRun, this does not grant any additional capabilities. As of time of publication, there are no known patches for this issue.

The weakness was published 07/08/2023 as GHSA-w2h3-vvvq-3m53. It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2023-37264 since 06/29/2023. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• Tekton

Name

• Pipeline

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

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