CVE-2022-40127 — AI Deep Analysis Summary

🚨 **Essence**: Apache Airflow Example Dags allow arbitrary command execution via the `run_id` parameter. 💥 **Consequences**: Remote Code Execution (RCE).…

🛡️ **Root Cause**: CWE-94 (Code Injection). The flaw lies in how Example Dags process the `run_id` parameter, failing to sanitize input before executing shell commands.

📦 **Affected**: Apache Airflow versions **prior to 2.4.0**. Specifically impacts the `example_bash_operator` DAGs included in the default installation.

💀 **Attacker Capabilities**: With UI access, an attacker can trigger DAGs and inject malicious payloads into `run_id`. This grants **arbitrary command execution** on the host running the Airflow component.

⚠️ **Threshold**: **Medium**. Requires **UI access** (authentication) to trigger the DAG. However, if default credentials or exposed UI exist, exploitation is trivial.

🔓 **Public Exploits**: **YES**. Multiple PoCs are available on GitHub (e.g., Mr-xn, jakabakos). Nuclei templates also exist for automated scanning.

🔍 **Self-Check**: 1. Check Airflow version (< 2.4.0). 2. Verify if `example_dags` are enabled. 3. Use Nuclei template `CVE-2022-40127.yaml` for automated detection.

✅ **Fixed**: **YES**. Patched in **Apache Airflow 2.4.0**. Upgrade immediately to the latest stable version to resolve the vulnerability.

🚧 **No Patch Workaround**: Disable `example_dags` in `airflow.cfg` (`load_examples = False`). Restrict UI access to trusted users only. Remove `example_bash_operator` DAG files.

🔥 **Urgency**: **HIGH**. RCE vulnerabilities are critical. If your UI is exposed or has weak auth, patch or mitigate **immediately** to prevent server takeover.