NGINX Alias Traversal
Summary: A Burp Suite extension detects NGINX alias traversal caused by misconfiguration, using a technique based on Orange Tsai's BlackHat USA 2018 presentation. It flags a server as vulnerable when a request to an existing path such as https://example.com/static../ returns the same response as https://example.com/, and confirms the misconfiguration by successfully requesting an existing resource via path traversal to eliminate false positives.
Bottom line: The check draws on common alias-path directories compiled from around 9,500 nginx configuration files, so the misconfiguration it targets is widespread enough to have shaped the tool's wordlist. A server that serves your root response for a crafted static path is handing out files outside the intended directory.
Read the original at PortSwigger Research ↗
- Topics
- Vulnerabilities & Patching
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