CVE-2023-43116: Github.com/buildkite/elastic ci stack for aws/v6 Buildkite Elastic CI For AWS Vulnerability

HIGH
Advisory Identifier: GHSA-7c44-7j7v-w554
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CVSS 7.8
CWE-59
Published
Advisory Summary

CVE-2023-43116 is a HIGH (CVSS 7.8) buildkite elastic ci for aws vulnerability (CWE-59: Improper Link Resolution Before File Access ('Link Following')) affecting Github.com/buildkite/elastic ci stack for aws/v6 libraries in the Go ecosystem. The issue involves buildkite elastic ci for aws symbolic link following vulnerability. Remediation is available by upgrading affected packages to version 6.7.0.

CVE-2023-43116 at a Glance

CVE Identifier CVE-2023-43116
GHSA Identifier GHSA-7c44-7j7v-w554
Severity HIGH
CVSS v3.1 Base Score 7.8
CWE Classification CWE-59: Improper Link Resolution Before File Access ('Link Following')
Affected Product Github.com/buildkite/elastic ci stack for aws/v6
Package Ecosystem Go
Published Date
Last Updated

Security Impact

CVSS: 7.8

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

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

How to Fix CVE-2023-43116

To remediate this vulnerability, upgrade all affected Github.com/buildkite/elastic ci stack for aws/v6 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/buildkite/elastic-ci-stack-for-aws/v6 fixed: 6.7.0 
Upgrade github.com/buildkite/elastic-ci-stack-for-aws/v6 to 6.7.0
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/buildkite/elastic-ci-stack-for-aws/v6

How to Check if You Are Affected

To determine whether your application is affected by CVE-2023-43116, inspect your project dependencies for Github.com/buildkite/elastic ci stack for aws/v6:

inspect dependencies for github.com/buildkite/elastic-ci-stack-for-aws/v6

Analyze the terminal output to locate any version of Github.com/buildkite/elastic ci stack for aws/v6 in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 6.7.0), 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-59: Improper Link Resolution Before File Access ('Link Following'), where the product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource. In Github.com/buildkite/elastic ci stack for aws/v6, 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

A symbolic link following vulnerability in Buildkite Elastic CI for AWS versions prior to 6.7.1 and 5.22.5 allows the buildkite-agent user to change ownership of arbitrary directories via the PIPELINE_PATH variable in the fix-buildkite-agent-builds-permissions script.

CVE-2023-43116 Affected Github.com/buildkite/elastic ci stack for aws/v6 Versions

1 component(s)
Fixed Versions:
6.7.0
Product / Package Ecosystem Affected Versions Fixed Version
github.com/buildkite/elastic-ci-stack-for-aws/v6
golang/github.com/buildkite/elastic-ci-stack-for-aws/v6
Go
< 6.7.0
6.7.0

References

NVD — CVE-2023-43116 NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-43116
Security Fix Commit FIX COMMIT
https://github.com/buildkite/elastic-ci-stack-for-aws/commit/8f79882b6aa18fb8fc61f10c7047d2907b7a2f69
GitHub Advisory / Wiki ADVISORY
https://github.com/atredispartners/advisories/blob/master/ATREDIS-2023-0003.md
Github.com/buildkite/elastic ci stack for aws/v6 Source Repository REPOSITORY
https://github.com/buildkite/elastic-ci-stack-for-aws

Frequently Asked Questions

What is CVE-2023-43116?
CVE-2023-43116 is a security vulnerability in Github.com/buildkite/elastic ci stack for aws/v6 involving Buildkite Elastic CI for AWS symbolic link following vulnerability under CWE-59: Improper Link Resolution Before File Access ('Link Following').
Which Github.com/buildkite/elastic ci stack for aws/v6 versions are affected?
Affected versions include releases prior to 6.7.0 across affected packages: github.com/buildkite/elastic-ci-stack-for-aws/v6.
What version fixes CVE-2023-43116?
Upgrading to 6.7.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is github.com/buildkite/elastic-ci-stack-for-aws/v6 affected?
Yes, github.com/buildkite/elastic-ci-stack-for-aws/v6 is affected in releases prior to 6.7.0. Upgrade your dependency to 6.7.0 or later.
What is the CVSS score of CVE-2023-43116?
CVE-2023-43116 has a CVSS v3.1 base score of 7.8 (HIGH) with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2023-43116?
CVE-2023-43116 is classified under CWE-59: Improper Link Resolution Before File Access ('Link Following') (The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.).
How can I check Go dependencies for CVE-2023-43116?
Run the dependency tree command: 'inspect dependencies for github.com/buildkite/elastic-ci-stack-for-aws/v6'. 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-7c44-7j7v-w554",
  "modified" : "2024-01-03T21:45:42Z",
  "published" : "2023-12-22T12:31:50Z",
  "aliases" : [ "CVE-2023-43116" ],
  "summary" : "Buildkite Elastic CI for AWS symbolic link following vulnerability",
  "details" : "A symbolic link following vulnerability in Buildkite Elastic CI for AWS versions prior to 6.7.1 and 5.22.5 allows the buildkite-agent user to change ownership of arbitrary directories via the PIPELINE_PATH variable in the fix-buildkite-agent-builds-permissions script.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/buildkite/elastic-ci-stack-for-aws/v6"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "6.7.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-43116"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/buildkite/elastic-ci-stack-for-aws/commit/8f79882b6aa18fb8fc61f10c7047d2907b7a2f69"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/atredispartners/advisories/blob/master/ATREDIS-2023-0003.md"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/buildkite/elastic-ci-stack-for-aws"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-59" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-01-03T21:45:42Z",
    "nvd_published_at" : "2023-12-22T10:15:11Z"
  }
}