CVE-2023-43741 Buildkite Elastic CI for AWS time-of-check-time-of-use race condition vulnerability
A race condition in Buildkite Elastic CI allows bypassing symlink checks, potentially enabling privilege escalation or security bypass.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-43741?
CVE-2023-43741 is a high-severity vulnerability in n/a, published on 22 Dec 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
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.
Weakness: CWE-367
Which versions are affected by CVE-2023-43741?
5 open source packages ship an affected version, including github.com/buildkite/elastic-ci-stack-for-aws/v6, github.com/buildkite/elastic-ci-stack-for-aws and github.com/buildkite/elastic-ci-stack-for-aws/v5. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
github.com/buildkite/elastic-ci-stack-for-aws/v6 Go | All versions | 6.7.1 |
github.com/buildkite/elastic-ci-stack-for-aws/v6 Go | All versions | 6.7.1 |
github.com/buildkite/elastic-ci-stack-for-aws/v6 Go | All versions | 6.7.1 |
github.com/buildkite/elastic-ci-stack-for-aws Go | All versions | None |
github.com/buildkite/elastic-ci-stack-for-aws/v5 Go | All versions | None |
Products include Buildkite Elastic Ci Stack.
How do I fix CVE-2023-43741?
Upgrade github.com/buildkite/elastic-ci-stack-for-aws/v6 to 6.7.1 or later.
Is CVE-2023-43741 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-43741 exists.
Other vulnerabilities in n/a
Sources
Also known as GHSA-r5hg-349q-mg2q, GO-2024-2440.