| 제목 | NousResearch hermes-agent 2026.4.16 Missing Authorization (CWE-862) |
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| 설명 | # Technical Details
A dangerous command approval bypass exists in the `check_all_command_guards()` method in `tools/approval.py` of hermes-agent.
The application fails to safely handle default contexts in `batch_runner.py` by treating unknown execution contexts (where interactive environment variables are unset) as implicitly safe instead of implicitly dangerous, allowing all flagged dangerous commands to be auto-approved.
# Vulnerable Code
File: tools/approval.py
Method: check_all_command_guards()
Why: The function checks for interactive environment variables (HERMES_INTERACTIVE, HERMES_GATEWAY_SESSION, HERMES_EXEC_ASK, HERMES_CRON_SESSION) and if none are set, the code falls through to an insecure default returning `{"approved": True, "message": None}` for any command.
# Reproduction
1. Prepare a `hermes-agent` environment.
2. Run a batch execution process using `batch_runner.py` with an unset interactive context.
3. Supply a malicious JSONL dataset containing a prompt injection payload that executes dangerous shell commands (e.g., `rm -rf /`).
4. Observe the commands are executed directly without approval.
# Impact
- Arbitrary command execution (RCE) on the host running the batch runner.
- Credential theft (e.g., reading `~/.hermes/.env`).
- Establishment of reverse shells or data exfiltration. |
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| 원천 | ⚠️ https://gist.github.com/YLChen-007/22cada4c9060f5123dde6185135ae3ab |
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| 사용자 | Eric-h (UID 97582) |
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| 제출 | 2026. 04. 24. PM 02:35 (1 월 ago) |
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| 모더레이션 | 2026. 05. 23. AM 11:19 (29 days later) |
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| 상태 | 수락 |
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| VulDB 항목 | 365313 [NousResearch hermes-agent 까지 2026.4.16 Batch Runner tools/approval.py check_all_command_guards 권한 상승] |
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| 포인트들 | 20 |
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