Описание
kaniko is a tool to build container images from a Dockerfile, inside a container or Kubernetes cluster. Starting in version 1.25.4 and prior to version 1.25.10, kaniko unpacks build context archives using filepath.Join(dest, cleanedName) without enforcing that the final path stays within dest. A tar entry like ../outside.txt escapes the extraction root and writes files outside the destination directory. In environments with registry authentication, this can be chained with docker credential helpers to achieve code execution within the executor process. Version 1.25.10 uses securejoin for path resolution in tar extraction.
A flaw was found in kaniko, a tool used to build container images. A remote attacker can exploit this vulnerability by providing a specially crafted build context archive that contains path traversal sequences. This allows files to be written outside the intended destination directory during archive unpacking. When chained with docker credential helpers in environments with registry authentication, this can lead to arbitrary code execution within the executor process.
Меры по смягчению последствий
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| OpenShift Serverless | openshift-serverless-1/kn-client-kn-rhel9 | Under investigation | ||
| OpenShift Serverless | openshift-serverless-1/kn-plugin-func-func-util-rhel9 | Under investigation | ||
| OpenShift Serverless | openshift-serverless-clients | Under investigation |
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Дополнительная информация
Статус:
8.5 High
CVSS3
Связанные уязвимости
kaniko is a tool to build container images from a Dockerfile, inside a container or Kubernetes cluster. Starting in version 1.25.4 and prior to version 1.25.10, kaniko unpacks build context archives using `filepath.Join(dest, cleanedName)` without enforcing that the final path stays within `dest`. A tar entry like `../outside.txt` escapes the extraction root and writes files outside the destination directory. In environments with registry authentication, this can be chained with docker credential helpers to achieve code execution within the executor process. Version 1.25.10 uses securejoin for path resolution in tar extraction.
kaniko has tar archive path traversal in its build context extraction, allowing file writes outside destination directories
8.5 High
CVSS3