BuildKit possible host system access from mount stub cleaner
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| moby | buildkit | before 0.12.5 | 0.12.5 | Patch available | CNA |
| — | github.com/moby/buildkit (Go) | before 0.12.5 | 0.12.5 | Patch available | GHSA-4v98-7qmw-rqr8 |
- buildkit Vendormoby Affected before 0.12.5 Fixed in 0.12.5 Patch available CNA
- github.com/moby/buildkit (Go) Vendor— Affected before 0.12.5 Fixed in 0.12.5 Patch available GHSA-4v98-7qmw-rqr8
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:mobyproject:buildkit:*:*:*:*:*:*:*:* | before 0.12.5 | Vulnerable | Mobyproject |
- cpe:2.3:a:mobyproject:buildkit:*:*:*:*:*:*:*:* Versions before 0.12.5 Vulnerable ·Mobyproject
Remediation
- Fix · CNA buildkit (moby) Fixed in 0.12.5
- Fix · GHSA-4v98-7qmw-rqr8 github.com/moby/buildkit (Go) Fixed in 0.12.5 Advisory →
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2024-23652
- 2026-10-03 Alias added: GHSA-4v98-7qmw-rqr8
References
More moby vulnerabilities
- TI-2026-14229 Tar extraction in moby/go-archive can write outside the destination directory via link following CVSS 4.0HIGH 7.1
- TI-2021-12512 Moby HyperKit uninitialized memory use in virtio-sock pci_vtsock_proc_tx CVSS 3.1HIGH 7.1
- TI-2024-27462 Moby authz zero length regression CVSS 3.1CRITICAL 10.0
- TI-2024-15672 BuildKit interactive containers API does not validate entitlements check CVSS 3.1CRITICAL 9.8
- TI-2026-26365 Moby: AuthZ plugin bypass with oversized request body CVSS 3.1HIGH 8.8
- TI-2026-27599 SpdyStream: DOS on CRI CVSS 4.0HIGH 8.7
Sources
- CVE-2024-23652 · CVE Program
- CVE-2024-23652 · NVD
- FIRST EPSS
- GHSA-4v98-7qmw-rqr8 · GitHub Advisory Database · CC BY 4.0
- CVE-2024-23652 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences