TI-2023-23443 Aliases CVE-2023-43741 GHSA-r5hg-349q-mg2q

A time-of-check-time-of-use race condition vulnerability in Buildkite Elastic CI for AWS…

HIGH 66CWE-367Published 2023-12-22 · Updated 2024-08-27

Key facts

Attack vector: Local
Privileges required: Low
User interaction: None
Attack complexity: High
Impact type: —
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub.

Summary

A time-of-check-time-of-use race condition vulnerability in Buildkite Elastic CI for AWS versions prior to 6.7.1 and 5.22.5 allows the buildkite-agent user to bypass a symbolic link check for the PIPELINE_PATH variable in the fix-buildkite-agent-builds-permissions script.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00195 9th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Fixed github.com/buildkite/elastic-ci-stack-for-aws/v6 (Go): 6.7.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Total

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
—	—	all versions	—	No fix listed	CNA
—	github.com/buildkite/elastic-ci-stack-for-aws/v6 (Go)	before 6.7.1	6.7.1	Patch available	GHSA-r5hg-349q-mg2q

— Vendor— Affected all versions Fixed in — No fix listed CNA
github.com/buildkite/elastic-ci-stack-for-aws/v6 (Go) Vendor— Affected before 6.7.1 Fixed in 6.7.1 Patch available GHSA-r5hg-349q-mg2q

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:buildkite:elastic_ci_stack::::::aws::*	before 5.22.5; 6.0.0 to before 6.7.1	Vulnerable	Buildkite

cpe:2.3:a:buildkite:elastic_ci_stack:*:*:*:*:*:aws:*:* Versions before 5.22.5; 6.0.0 to before 6.7.1 Vulnerable ·Buildkite

Remediation

Fix · GHSA-r5hg-349q-mg2q github.com/buildkite/elastic-ci-stack-for-aws/v6 (Go) Fixed in 6.7.1 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2023-43741
2026-10-03 Alias added: GHSA-r5hg-349q-mg2q

References

Exploit 1

https://github.com/atredispartners/advisories/blob/master/ATREDIS-2023-0003.md

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2023-43741

Other 2

TI-2023-23096 A symbolic link following vulnerability in Buildkite Elastic CI for AWS versions prior to… CVSS 3.1HIGH 7.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences