Plug.Conn.Query Nested Query DoS Vulnerability

Vulnerability Overview This vulnerability affects the module within the repository. Specifically, when query nesting exceeds 32 levels, the system throws a . This issue may impact applications that use the module to process query parameters. Scope of Impact Affected Module: Trigger Condition: Query nesting exceeds 32 levels Error Type: Remediation Measures 1. Implement Nesting Level Limits: Add a check for query nesting levels within the module to ensure nesting does not exceed 32 levels. 2. Optimize Recursive Logic: Optimize the recursive logic of functions such as and to avoid performance issues caused by deep nesting. 3. Update Test Cases: Add test cases specifically targeting deeply nested queries to ensure the patched code correctly handles various nesting scenarios. Proof of Concept (POC) Code The following is the POC code related to the vulnerability: ```elixir lib/plug/conn/query.ex defmodule Plug.Conn.Query do @max_nesting 32 defp split_keys(key, pos, rest, value, acc) do split_keys(rest, key, pos, value, [{root, value}]) end defp split_keys(rest, key, pos, value, acc) do split_keys(rest, key, pos, value, [{root, value}]) end defp split_keys(rest, key, pos, value, acc) do split_keys(rest, key, pos, value, [{root, value}]) end defp split_keys(rest, key, pos, value, acc) do split_keys(rest, key, pos, value, [{root, value}]) end defp split_keys(rest, key, pos, value, acc) do split_keys(rest, key, pos, value, [{root, value}]) end defp split_keys(rest, key, pos, value, acc) do split_keys(rest, key, pos, value, [{root, value}]) end defp split_keys(rest, key, pos, value, acc) do split_keys(rest, key, pos, value, [{root, value}]) end defp split_keys(rest, key, pos, value, acc) do split_keys(rest, key, pos, value, [{root, value}]) end defp split_keys(rest, key, pos, value, acc) do split_keys(rest, key, pos, value, [{root, value}]) end defp split_keys(rest, key, pos, value, acc) do split_keys(rest, key, pos, value, [{root, value}]) end defp split_keys(rest, key, pos, value, acc) do split_keys(rest, key, pos, value, [{root, value}]) end defp split_keys(rest, key, pos, value, acc) do split_keys(rest, key, pos, value, [{root, value}]) end defp split_keys(rest, key, pos, value, acc) do split_keys(rest, key, pos, value, [{root, value}]) end defp split_keys(rest, key, pos, value, acc) do split_keys(rest, key, pos, value, [{root, value}]) end defp split_keys(rest, key, pos, value, acc) do split_keys(rest, key, pos, value, [{root, value}]) end defp split_keys(rest, key, pos, value, acc) do split_keys(rest, key, pos, value, [{root, value}]) end defp split_keys(rest, key, pos, value, acc) do split_keys(rest, key, pos, value, [{root, value}]) end defp split_keys(rest, key, pos, value, acc) do split_keys(rest, key, pos, value, [{root, value}]) end defp split_keys(rest, key, pos, value, acc) do split_keys(rest, key, pos, value, [{root, value}]) end defp split_keys(rest, key, pos, value, acc) do split_keys(rest, key, pos, value, [{root, value}]) end defp split_keys(rest, key, pos, value, acc) do split_keys(rest, key, pos, value, [{root, value}]) end defp split_keys(rest, key, pos, value, acc) do split_keys(rest, key, pos, value, [{root, value}]) end defp split_keys(rest, key, pos, value, acc) do split_keys(rest, key, pos, value, [{root, value}]) end defp split_keys(rest, key, pos, value, acc) do split_keys(rest, key, pos, value, [{root, value}]) end defp split_keys(rest, key, pos, value, acc) do split_keys(rest, key, pos, value, [{root, value}]) end defp split_keys(rest, key, pos, value, acc) do split_keys(rest, key, pos, value, [{root, value}]) end defp split_keys(rest, key, pos, value, acc) do split_keys(rest, key, pos, value, [{root, value}]) end defp split_keys(rest, key, pos, value, acc) do split_keys(rest, key, pos, value, [{root, value}]) end defp split_keys(rest, key, pos, value, acc) do split_keys(rest, key, pos, value, [{root, value}]) end defp split_keys(rest, key, pos, value, acc) do split_keys(rest, key, pos, value, [{root, value}]) end defp split_keys(rest, key, pos, value, acc) do split_keys(rest, key, pos, value, [{root, value}]) end defp split_keys(rest, key, pos, value, acc) do split_keys(rest, key, pos, value, [{root, value}]) end defp split_keys(rest, key, pos, value, acc) do split_keys(rest, key, pos, value, [{root, value}]) end defp split_keys(rest, key, pos, value, acc) do split_keys(rest, key, pos, value, [{root, value}]) end defp split_keys(rest, key, pos, value, acc) do split_keys(rest, key, pos, value, [{root, value}]) end defp split_keys(rest, key, pos, value, acc) do split_keys(rest, key, pos, value, [{root, value}]) end defp split_keys(rest, key, pos, value, acc) do split_keys(rest, key, pos, value, [{root, value}]) end defp split_keys(rest, key, pos, value, acc) do split_keys(rest, key, pos, value, [{root, value}]) end defp split_keys(rest, key, pos, value, acc) do split_keys(rest, key, pos, value, [{root, value}]) end defp split_keys(rest, key, pos, value, acc) do split_keys(rest, key, pos,

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Plug.Conn.Query Nested Query DoS Vulnerability

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