Insecure default config of Celery worker in Apache Airflow

An issue was found in Apache Airflow versions 1.10.10 and below. When using CeleryExecutor, if an attack can connect to the broker (Redis, RabbitMQ) directly, it was possible to insert a malicious payload directly to the broker which could lead to a deserialization attack (and thus remote code execution) on the Worker.

CVSS 3.1

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

Severity from

GitHub (reviewed advisory)

Weakness

CWE-502

Also known as

BIT-airflow-2020-11982, CVE-2020-11982, PYSEC-2020-16

• nvd.nist.gov/vuln/detail/CVE-2020-11982
• github.com/apache/airflow/pull/13612
• github.com/apache/airflow/pull/7205
• github.com/advisories/GHSA-9g2w-5f3v-mfmm
• github.com/apache/airflow
• github.com/pypa/advisory-database/tree/main/vulns/apache-airflow/PYSEC-2020-16.yaml
• lists.apache.org/thread.html/r7255cf0be3566f23a768e2a04b40fb09e52fcd1872695428ba9afe91%40%3Cusers.airflow.apache.org%3E