CVE-2024-23652 BuildKit possible host system access from mount stub cleaner
A malicious Dockerfile or frontend can trick BuildKit into deleting files on the host system, potentially leading to privilege escalation or data loss.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2024-23652?
CVE-2024-23652 is a critical path traversal vulnerability in moby buildkit, published on 31 Jan 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-22
Which versions are affected by CVE-2024-23652?
3 open source packages ship an affected version, including github.com/moby/buildkit. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
github.com/moby/buildkit Go | All versions | 0.12.5 |
github.com/moby/buildkit Go | All versions | 0.12.5 |
github.com/moby/buildkit Go | All versions | 0.12.5 |
Products include Mobyproject Buildkit.
How do I fix CVE-2024-23652?
Upgrade github.com/moby/buildkit to 0.12.5 or later.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2024-23652 being exploited?
There is no known exploitation of CVE-2024-23652 in the wild and no public exploit code.
Public exploit code: 2 proofs of concept on GitHub.
Other vulnerabilities in moby buildkit
- CVE-2024-23653 BuildKit interactive containers API does not validate entitlements check
- CVE-2024-23651 BuildKit possible race condition with accessing subpaths from cache mounts
- CVE-2026-33747 BuildKit vulnerable to malicious frontend causing file escape outside of storage root
- CVE-2026-33748 BuildKit Git URL subdir component can cause access to restricted files
- CVE-2026-15789 Malicious client can bypass destination directory validation on local sources upload
Sources
Also known as AZL-34086, AZL-35010, BELL-CVE-2024-23652, CLEANSTART-2025-VO24808, CLEANSTART-2026-LT94285, GHSA-4v98-7qmw-rqr8 and 2 more.