URL Fuzzer - 401/403 Bypass
Summary: PortSwigger's BApp Store lists a Burp extension called URL Fuzzer, version 1.0 by author Akenofu, last updated 09 January 2024, which fuzzes URLs with all available ASCII characters to identify parser inconsistencies. The extension is based on work by Rafael da Costa Santos and Orange Tsai, and is run by starting an active scan against a target and viewing results as issues.
Bottom line: The tool targets 401/403 bypasses that arise when different HTTP parsers read the same URL differently, so an access control that looks enforced at one layer may not hold at the next. PortSwigger states it makes no warranty about the quality or usefulness of third-party extensions for any particular purpose.
Read the original at PortSwigger Research ↗
- Topics
- Vulnerabilities & Patching
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