Remote code execution (RCE) in Apache Airflow

An issue was found in Apache Airflow versions 1.10.10 and below. A remote code/command injection vulnerability was discovered in one of the example DAGs shipped with Airflow which would allow any authenticated user to run arbitrary commands as the user running airflow worker/scheduler (depending on the executor in use). If you already have examples disabled by setting `load_examples=False` in the config then you are not vulnerable.

CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:H

Severity from

GitHub (reviewed advisory)

Weakness

CWE-77, CWE-78

Also known as

BIT-airflow-2020-11978, CVE-2020-11978, PYSEC-2020-14

• nvd.nist.gov/vuln/detail/CVE-2020-11978
• github.com/apache/airflow/pull/9143
• github.com/apache/airflow/commit/2fa51576e1283f5732e38fada686fd248d9c3a1e
• github.com/apache/airflow/commit/4d8599e8b0520ff4226fbad72f724afae50fdd08
• github.com/apache/airflow
• github.com/pypa/advisory-database/tree/main/vulns/apache-airflow/PYSEC-2020-14.yaml
• lists.apache.org/thread.html/r7255cf0be3566f23a768e2a04b40fb09e52fcd1872695428ba9afe91%40%3Cusers.airflow.apache.org%3E
• www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-11978
• packetstormsecurity.com/files/162908/Apache-Airflow-1.10.10-Remote-Code-Execution.html
• packetstormsecurity.com/files/174764/Apache-Airflow-1.10.10-Remote-Code-Execution.html