Auth bypass in Moby Buildkit
CVE-2024-23653
BuildKit is a toolkit for converting source code to build artifacts in an efficient, expressive and repeatable manner. In addition to running containers as build steps, BuildKit also provides APIs for running interactive containers based on built images. It was possible to use these APIs to ask BuildKit to run a container with elevated privileges. Normally, running such containers is only allowed if special `security.insecure` entitlement is enabled both by buildkitd configuration and allowed by the user initializing the build request. The issue has been fixed in v0.12.5 . Avoid using BuildKit frontends from untrusted sources.
Vulnerability class: Broken Access Control
EPSS: 0.030 (86.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Moby Buildkit — versions < 0.12.5
- Mobyproject Buildkit
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC, Release Notes)
Frequently asked questions
- What is CVE-2024-23653?
- CVE-2024-23653 is a critical-severity vulnerability in Moby Buildkit, classified under Incorrect Authorization. CVSS score: 9.8/10. Published 2024-01-31.
- How severe is CVE-2024-23653?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2024-23653 known to be exploited?
- 10 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.