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Buildkit's interactive containers API does not validate entitlements check

Critical severity GitHub Reviewed Published Jan 31, 2024 in moby/buildkit • Updated Feb 1, 2024

Package

gomod github.com/moby/buildkit (Go)

Affected versions

< 0.12.5

Patched versions

0.12.5

Description

Impact

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.

Patches

The issue has been fixed in v0.12.5 .

Workarounds

Avoid using BuildKit frontends from untrusted sources. A frontend image is usually specified as the #syntax line on your Dockerfile, or with --frontend flag when using buildctl build command.

References

References

@tonistiigi tonistiigi published to moby/buildkit Jan 31, 2024
Published by the National Vulnerability Database Jan 31, 2024
Published to the GitHub Advisory Database Jan 31, 2024
Reviewed Jan 31, 2024
Last updated Feb 1, 2024

Severity

Critical
9.8
/ 10

CVSS base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CVE ID

CVE-2024-23653

GHSA ID

GHSA-wr6v-9f75-vh2g

Source code

Credits

Checking history
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