youming1970 opened a new pull request, #55323:
URL: https://github.com/apache/airflow/pull/55323
## Summary
This PR improves input sanitization in the `example_trigger_target_dag.py`
to prevent potential command injection vulnerabilities when using user-provided
configuration values in bash commands.
## Problem
The current implementation directly uses `dag_run.conf.get("message")` in
the bash environment without proper sanitization, which could allow command
injection if malicious input is provided through the DAG configuration.
## Solution
- Added comprehensive input sanitization using Jinja2 filters to escape bash
special characters
- Added security-focused comments to educate users about the importance of
input sanitization
- Maintains backward compatibility while significantly improving security
posture
## Security Impact
- **Risk Level**: Medium (P1) - Command injection in example code could
mislead users
- **Scope**: Example DAG that demonstrates TriggerDagRunOperator usage
- **Mitigation**: Proper escaping of `\`, `"`, `` ` ``, and `$` characters
## Changes Made
1. Enhanced the `env` parameter in `BashOperator` with proper Jinja2
filtering
2. Added educational security comments explaining the sanitization approach
3. Maintained the original functionality while preventing injection attacks
## Testing
- Verified the sanitization works with various input patterns
- Confirmed backward compatibility with existing DAG configurations
- Validated that the security fix doesn't break normal message passing
## Code Quality
- Follows Apache Airflow coding standards
- Includes comprehensive security documentation
- Maintains readability while improving security
---
*This security improvement was identified through systematic configuration
security analysis.*
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: commits-unsubscr...@airflow.apache.org
For queries about this service, please contact Infrastructure at:
us...@infra.apache.org
