WAF Bypadd
Summary: A Burp Suite extension called WAF Bypadd, authored by Julian J. M and last updated 07 September 2023, pads HTTP requests with dummy data to bypass Web Application Firewalls. The approach exploits the fact that many WAFs only analyze the first few kilobytes of a request, so filling that portion with harmless data can stop the WAF from inspecting the actual payload.
What's compelling: If your WAF only inspects the opening kilobytes of a request, an attacker can bury the payload past that boundary and your primary web defense never sees it.
Read the original at PortSwigger Research ↗
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