CVE-2023-50943

Apache Airflow, versions before 2.8.1, have a vulnerability that allows a potential attacker to poison the XCom data by bypassing the protection of enable_xcom_pickling=False configuration setting resulting in poisoned data after XCom deserialization. This vulnerability is considered low since it requires a DAG author to exploit it. Users are recommended to upgrade to version 2.8.1 or later, which fixes this issue.

Weakness

The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.

Affected Software

Potential Mitigations

• Make fields transient to protect them from deserialization.
• An attempt to serialize and then deserialize a class containing transient fields will result in NULLs where the transient data should be. This is an excellent way to prevent time, environment-based, or sensitive variables from being carried over and used improperly.

Related Attack Patterns

• https://cwe.mitre.org/data/definitions/586.html

References

• http://www.openwall.com/lists/oss-security/2024/01/24/4
• https://github.com/apache/airflow/pull/36255
• https://lists.apache.org/thread/fx278v0twqzxkcts70tc04cp3f8p56pn
• http://www.openwall.com/lists/oss-security/2024/01/24/4
• https://github.com/apache/airflow/pull/36255
• https://lists.apache.org/thread/fx278v0twqzxkcts70tc04cp3f8p56pn