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- Add scripts/agent.py and references/api-reference.md to all remaining skills - Update all 648 LICENSE files: copyright now reads 'Mahipal' - Add implementing-security-monitoring-with-datadog (new skill with full anatomy) - All 649 skills now have: SKILL.md, LICENSE, scripts/agent.py, references/api-reference.md
46 lines
1.7 KiB
Markdown
46 lines
1.7 KiB
Markdown
# API Reference: Testing for XML Injection Vulnerabilities
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## XXE Payload Types
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| Payload | Severity | Description |
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|---------|----------|-------------|
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| File read (Linux) | Critical | `file:///etc/passwd` entity inclusion |
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| File read (Windows) | Critical | `file:///c:/windows/win.ini` entity |
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| SSRF via HTTP | Critical | Entity fetching internal metadata URL |
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| Parameter entity | High | External DTD loading via `%entity` |
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| Billion laughs | High | Recursive entity expansion (DoS) |
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| UTF-7 encoding | High | Encoding bypass for WAF evasion |
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## XPath Injection Payloads
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| Payload | Purpose |
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|---------|---------|
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| `' or '1'='1` | Boolean-based auth bypass |
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| `'] \| //user/password \| //foo['` | Data extraction via union |
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| `1 or 1=1` | Numeric context injection |
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## Detection Indicators
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| Attack | Success Indicator |
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|--------|-------------------|
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| Linux file read | `root:` in response body |
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| Windows file read | `[fonts]` or `extensions` in response |
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| SSRF metadata | `ami-id` or `instance-id` in response |
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| Billion laughs | Response time > 5 seconds |
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| Content-type switch | XML accepted when JSON expected |
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| SVG XXE | `root:` in upload response |
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## Python Libraries
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| Library | Version | Purpose |
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|---------|---------|---------|
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| `requests` | >=2.28 | HTTP POST with XML payloads |
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| `json` | stdlib | Report generation |
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| `pathlib` | stdlib | Output directory management |
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## References
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- OWASP XXE Prevention: https://cheatsheetseries.owasp.org/cheatsheets/XML_External_Entity_Prevention_Cheat_Sheet.html
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- PortSwigger XXE: https://portswigger.net/web-security/xxe
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- PayloadsAllTheThings XXE: https://github.com/swisskyrepo/PayloadsAllTheThings/tree/master/XXE%20Injection
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