Public on 2024-02-01
Modified on 2024-02-02
Moby is an open-source project created by Docker to enable software containerization. The classic builder cache system is prone to cache poisoning if the image is built FROM scratch. Also, changes to some instructions (most important being HEALTHCHECK and ONBUILD) would not cause a cache miss. An attacker with the knowledge of the Dockerfile someone is using could poison their cache by making them pull a specially crafted image that would be considered as a valid cache candidate for some build steps. 23.0+ users are only affected if they explicitly opted out of Buildkit (DOCKER_BUILDKIT=0 environment variable) or are using the /build API endpoint. All users on versions older than 23.0 could be impacted. Image build API endpoint (/build) and ImageBuild function from is also affected as it the uses classic builder by default. Patches are included in 24.0.9 and 25.0.2 releases.
Medium severity
CVSS v3 Base Score
See breakdown

Affected Packages

Platform Package Release Date Advisory Status
Amazon Linux 1 docker No Fix Planned
Amazon Linux 2 - Aws-nitro-enclaves-cli Extra docker Pending Fix
Amazon Linux 2 - Docker Extra docker Pending Fix
Amazon Linux 2 - Ecs Extra docker Pending Fix
Amazon Linux 2023 docker 2024-02-29 ALAS2023-2024-542 Fixed

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 6.4 CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:L/I:H/A:L