CVE-2024-23652: Github.com/moby/buildkit BuildKit Vulnerable To Possible Host Vulnerability

CRITICAL
Advisory Identifier: GHSA-4v98-7qmw-rqr8
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CVSS 10.0
CWE-22
Published
Advisory Summary

CVE-2024-23652 is a CRITICAL (CVSS 10.0) buildkit vulnerable to possible host vulnerability (CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')) affecting Github.com/moby/buildkit libraries in the Go ecosystem. The issue involves buildkit vulnerable to possible host system access from mount stub cleaner. Remediation is available by upgrading affected packages to version 0.12.5.

CVE-2024-23652 at a Glance

CVE Identifier CVE-2024-23652
GHSA Identifier GHSA-4v98-7qmw-rqr8
Severity CRITICAL
CVSS v3.1 Base Score 10.0
CWE Classification CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Product Github.com/moby/buildkit
Package Ecosystem Go
Published Date
Last Updated

Security Impact

CVSS: 10.0

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Changed (S:C)
Confidentiality None (C:N)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2024-23652

To remediate this vulnerability, upgrade all affected Github.com/moby/buildkit dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

github.com/moby/buildkit fixed: 0.12.5 
Upgrade github.com/moby/buildkit to 0.12.5
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for github.com/moby/buildkit

How to Check if You Are Affected

To determine whether your application is affected by CVE-2024-23652, inspect your project dependencies for Github.com/moby/buildkit:

inspect dependencies for github.com/moby/buildkit

Analyze the terminal output to locate any version of Github.com/moby/buildkit in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.12.5), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'), where the product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. In Github.com/moby/buildkit, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### 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

CVE-2024-23652 Affected Github.com/moby/buildkit Versions

1 component(s)
Fixed Versions:
0.12.5
Product / Package Ecosystem Affected Versions Fixed Version
github.com/moby/buildkit
golang/github.com/moby/buildkit
Go
< 0.12.5
0.12.5

References

GitHub Advisory / Wiki ADVISORY
https://github.com/moby/buildkit/security/advisories/GHSA-4v98-7qmw-rqr8
NVD — CVE-2024-23652 NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-23652
Github.com/moby/buildkit Source Repository REPOSITORY
https://github.com/moby/buildkit/pull/4603
Github.com/moby/buildkit Source Repository REPOSITORY
https://github.com/moby/buildkit
Github.com/moby/buildkit Release RELEASE
https://github.com/moby/buildkit/releases/tag/v0.12.5

Frequently Asked Questions

What is CVE-2024-23652?
CVE-2024-23652 is a security vulnerability in Github.com/moby/buildkit involving BuildKit vulnerable to possible host system access from mount stub cleaner under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal').
Which Github.com/moby/buildkit versions are affected?
Affected versions include releases prior to 0.12.5 across affected packages: github.com/moby/buildkit.
What version fixes CVE-2024-23652?
Upgrading to 0.12.5 (or the latest patched release for your respective branch) resolves the vulnerability.
Is github.com/moby/buildkit affected?
Yes, github.com/moby/buildkit is affected in releases prior to 0.12.5. Upgrade your dependency to 0.12.5 or later.
What is the CVSS score of CVE-2024-23652?
CVE-2024-23652 has a CVSS v3.1 base score of 10.0 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H.
What CWE is associated with CVE-2024-23652?
CVE-2024-23652 is classified under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') (The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.).
How can I check Go dependencies for CVE-2024-23652?
Run the dependency tree command: 'inspect dependencies for github.com/moby/buildkit'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-4v98-7qmw-rqr8",
  "modified" : "2024-02-01T17:48:26Z",
  "published" : "2024-01-31T22:43:26Z",
  "aliases" : [ "CVE-2024-23652" ],
  "summary" : "BuildKit vulnerable to possible host system access from mount stub cleaner",
  "details" : "### Impact\nA 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.\n\n### Patches\nThe issue has been fixed in v0.12.5\n\n### Workarounds\nAvoid using BuildKit frontend from an untrusted source or building an untrusted Dockerfile containing `RUN --mount` feature.\n\n### References\n\n",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/moby/buildkit"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.12.5"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/moby/buildkit/security/advisories/GHSA-4v98-7qmw-rqr8"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-23652"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/moby/buildkit/pull/4603"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/moby/buildkit"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/moby/buildkit/releases/tag/v0.12.5"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-22" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-01-31T22:43:26Z",
    "nvd_published_at" : "2024-01-31T22:15:54Z"
  }
}