RedGuard

RedGuard - 優れたC2フロントフロー制御ツール 英語 | 中文ドキュメント 0x00 はじめに RedGuardとは...

Proof-of-Concept-POC---CVE-2026-49975-HTTP-2-Bomb-

CVE-2026-49975 - HTTP/2 Bomb 概念実証 説明 CVE-2026-49975（別名 HTTP/2 Bomb ）は、ほとんどの主要なWebサーバーのデフォルトのHTTP/2設定に影響を与えるリモートサービス拒否（DoS）脆弱性です。 この脆弱性は、OpenAI Codex によって、10年前から知られている2つの技術を組み合わせて発見されました： HPACK Bomb : ネットワーク上の1バイトがサーバー上で完全なヘッダー割り当てに変換されます Slowloris式ホールド : メモリ解放を防ぐゼロバイトのフロー制御ウィンドウ 影響を受けるサーバー...

CVE-2026-49975-POC

CVE-2026-49975 — HTTP/2 爆弾 PoC CVE-2026-49975 の概念実証エクスプロイト。HTTP/2 サーバー実装におけるリモートサービス拒否の脆弱性です。Quang Luong Calif Security Research によって発見され、2026 年 6 月 2 日に公開されました。 許可されたセキュリティテストにのみ使用してください。所有していない、またはテストする書面による許可を得ていないインフラストラクチャに対して使用しないでください。 動作原理 この攻撃は、2 つの HTTP/2 プロトコルメカニズムを連鎖させます。 1. HPACK...

cve-2026-49975-http2bomb_reproduction

CVE-2026-49975（HTTP/2 Bomb）完全再現ガイド 奇安信（QiAnXin）CERT アドバイザリ + Calif オリジナル研究に基づく ================================================================ I. 脆弱性の概要 CVE-2026-49975 は、HTTP/2 サーバーおよびプロキシ実装における重大なサービス拒否（DoS）脆弱性です。「HTTP/2 Bomb」または「HPACK Bomb」と呼ばれるこの攻撃は、HTTP/2 プロトコルの 2...

CVE-2026-84304 gRPC-Go: Heap Memory Exhaustion (OOM) via HTTP/2 DATA Frame Fragmentation

gRPC-Go is the Go language implementation of gRPC. Prior to 1.83.1, internal/transport/transport.go stores each fragmented HTTP/2 DATA frame as a separate recvMsg in recvBuffer, so millions of one-byte frames can consume disproportionate heap memory even when payload bytes remain within connectio...

http2-bomb-detector

http2-bomb-detector HTTP/2 Bomb CVE-2026-49975 非破壊的脆弱性検出ツール — Nginx / Apache httpd 向け 脆弱性の背景 CVE-2026-49975 は、広範囲に影響を及ぼす HTTP/2 プロトコル層のリモートサービス拒否脆弱性であり、セキュリティ研究者の Quang Luong によって発見されました。この脆弱性は HPACK ヘッダー圧縮 と フロー制御メカニズム の組み合わせによる設計上の欠陥を悪用し、攻撃者は認証なしで 10～20 秒以内にサーバーの 32GB メモリを枯渇させることができます。 CVSS 3.1...

CVE-2026-49975

CVE-2026-49975 HTTP/2 Bomb PoC HTTP/2 リモートサービス拒否脆弱性再現ツール 脆弱性の概要 CVE-2026-49975 は、主要な Web サーバーに影響する HTTP/2 サービス拒否（DoS）脆弱性です。この脆弱性は、セキュリティ企業 Calif（OpenAI Codex を使用）によって 2026 年 6 月上旬に発見されました。 攻撃原理 1. HPACK 圧縮爆弾 ：極めて小さなヘッダー（例: "x: a"）をサーバーの HPACK 動的テーブルに挿入し、その後 1...

fides

Securing AI Agents with Information-Flow Control This repository contains a Jupyter notebook to accompany the academic paper "Securing AI Agents with Information-Flow Control". The notebook is structured as a tutorial to walk readers through the concepts introduced in the paper. This illustrates ...

http2-bomb-analysis-paper

HTTP/2 Bomb: HPACK Indexed-Reference Amplification Chain Attack Un approfondimento tecnico indipendente di uno studente delle superiori Giugno 2026 TL;DR Questo repository contiene la mia analisi completa della vulnerabilità HTTP/2 Bomb CVE-2026-49975 / CVE-2026-47774, che combina due primitive...

CVE-2026-67591

A flaw was found in Apache Qpid ProtonJ2. An authenticated attacker can exploit this vulnerability by exceeding the session flow control incoming window. This can lead to a denial of service DoS, making the system unavailable to legitimate users. Mitigation Ensure authenticated access to AMQP...

CVE-2026-66275

A flaw was found in Apache Qpid Proton-J. An authenticated attacker could exploit this by exceeding the session flow control incoming window. This action could lead to a denial of service DoS, making the system unavailable to legitimate users. Mitigation Ensure authenticated access to AMQP...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: octeontx2-af: CGX: fix bitmap leaks The RX/TX flow-control bitmaps rxfcpfvfbmap and txfcpfvfbmap are allocated by cgxlmacinit, but never freed in cgxlmacexit. Unbinding and rebinding the driver therefore triggers a kmemleak:...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: net: mvpp2: Guard flow control updates with globaltxfc in buffer switching The function mvpp2bmswitchbuffers mvpp2bmpoolupdateprivfc when switching between per-cpu and shared buffer pool modes. This function programs the CM3 flow...

Astra Linux – Vulnerability in Node.js

A memory leak occurs in Node.js HTTP/2 servers when a client sends WINDOWUPDATE frames on stream 0 connection-level that cause the flow control window to exceed the maximum value of 2³¹-1. The server correctly sends a GOAWAY frame, but the Http2Session object is never cleaned up. This vulnerabili...

CVE-2026-74836

Allocation of Resources Without Limits or Throttling vulnerability in mtrudel bandit allows an unauthenticated remote attacker to pin an unbounded number of HTTP/2 stream processes indefinitely via connection-level flow control. When a stream's response body outruns the HTTP/2 connection-level se...

EUVD-2026-63660

Allocation of Resources Without Limits or Throttling vulnerability in mtrudel bandit allows an unauthenticated remote attacker to pin an unbounded number of HTTP/2 stream processes indefinitely via connection-level flow control. When a stream's response body outruns the HTTP/2 connection-level se...

CVE-2026-74836 HTTP/2 connection-window starvation pins Plug processes indefinitely in Bandit

Allocation of Resources Without Limits or Throttling vulnerability in mtrudel bandit allows an unauthenticated remote attacker to pin an unbounded number of HTTP/2 stream processes indefinitely via connection-level flow control. When a stream's response body outruns the HTTP/2 connection-level se...

CVE-2026-74836 HTTP/2 connection-window starvation pins Plug processes indefinitely in Bandit

Allocation of Resources Without Limits or Throttling vulnerability in mtrudel bandit allows an unauthenticated remote attacker to pin an unbounded number of HTTP/2 stream processes indefinitely via connection-level flow control. When a stream's response body outruns the HTTP/2 connection-level se...

EEF-CVE-2026-74836 HTTP/2 connection-window starvation pins Plug processes indefinitely in Bandit

Summary Allocation of Resources Without Limits or Throttling vulnerability in mtrudel bandit allows an unauthenticated remote attacker to pin an unbounded number of HTTP/2 stream processes indefinitely via connection-level flow control. When a stream's response body outruns the HTTP/2...

CVE-2026-74836

CVE-2026-74836 is an unbounded resource exhaustion vulnerability in mtrudel/bandit (Erlang HTTP/2 server library), affecting versions 0.3.4 through before 1.12.5 . When a stream's response body exceeds the HTTP/2 connection-level send window (default 65,535 bytes), the stream process blocks indef...