The sequence ../../../../ is the classic path traversal. Each .. means "move up one directory level." Four of them bring you from the web application’s working directory all the way up to the root filesystem ( / ) .
Do not try to block .. , -2F , or .aws . Attackers have infinite encoding tricks (Unicode, double URL encoding, base64). Instead, use a whitelist. -template-..-2F..-2F..-2F..-2Froot-2F.aws-2Fcredentials
A path traversal (or directory traversal) attack occurs when an application uses unvalidated user input to build a file path on the server. By manipulating this input, an attacker can "break out" of the intended directory to read restricted files. 1. Decoding the Payload The payload breaks down into several critical parts: The sequence
