BuildKit vulnerable to possible host system access from mount stub cleaner

緊急 9.1CVE-2024-23652 · GHSA-4v98-7qmw-rqr8 · GO-2024-2494 · 31/01/2024 公開 · 17/06/2026 更新

要点

CVE-2024-23652 は github.com/moby/buildkit, buildkit (mobyproject) に影響する深刻度「緊急」 (CVSS 9.1) の脆弱性です。
今後30日間に悪用される確率（EPSS）：2.5%（全脆弱性の 84.5% より高い）。
対処：0.12.5 以降に更新してください。

パッケージ	影響を受けるバージョン	修正済みバージョン
github.com/moby/buildkit Go	`< 0.12.5`	`0.12.5`
buildkit mobyproject	`< 0.12.5`	`0.12.5`

概要

Impact

A malicious BuildKit frontend or Dockerfile using RUN --mount could trick the feature that removes empty files created for the mountpoints into removing a file outside the container, from the host system.

Patches

The issue has been fixed in v0.12.5

Workarounds

Avoid using BuildKit frontend from an untrusted source or building an untrusted Dockerfile containing RUN --mount feature.

References

NVD の説明

BuildKit is a toolkit for converting source code to build artifacts in an efficient, expressive and repeatable manner. A malicious BuildKit frontend or Dockerfile using RUN --mount could trick the feature that removes empty files created for the mountpoints into removing a file outside the container, from the host system. The issue has been fixed in v0.12.5. Workarounds include avoiding using BuildKit frontends from an untrusted source or building an untrusted Dockerfile containing RUN --mount feature.