kkaanozturk/HyperOS-Directory-Traversal-Analysis

## 📖 关于本项目 本代码库包含了对小米 **HyperOS AVCodec** 媒体处理框架中发现的严重 **Use-After-Free (UAF)** 漏洞 **CVE-2025-21082** 的深度技术分析、攻击机制模拟以及修复建议。 该漏洞的根本原因是，在 AVCodec 的异步回调机制中，当 worker thread 仍在运行时，codec context 就被释放。这种情况会导致经典的 **Use-After-Free race condition**，并在理论上提供 **远程代码执行 (RCE)** 的可能性。 本项目包含：使用 Rust 编写的安全 UAF 模拟、全面的技术文档、GitHub Actions CI pipeline 自动化，以及基于浏览器的交互式可视化。 ## 📂 仓库结构 ``` HyperOS-Directory-Traversal-Analysis/ │ ├── 📁 .github/ # GitHub topluluk ve CI/CD iş akışları │ ├── 📁 ISSUE_TEMPLATE/ # Hata ve özellik talep şablonları │ │ ├── 📄 config.yml # Issue şablon yapılandırması ve bağlantılar │ │ ├── 📄 hata-raporu.yml # Hata raporu formu (YAML Forms) │ │ └── 📄 ozellik-istegi.yml # Özellik isteği formu (YAML Forms) │ ├── 📁 workflows/ │ │ ├── 📄 rust.yml # Rust CI — Derleme, test ve lint pipeline │ │ ├── 📄 pages.yml # GitHub Pages otomatik yayınlama │ │ ├── 📄 security.yml # Güvenlik taraması (cargo-audit, CodeQL) │ │ └── 📄 docs.yml # Dokümantasyon lint ve bağlantı kontrolü │ ├── 📄 dependabot.yml # Otomatik bağımlılık güncelleme │ ├── 📄 FUNDING.yml # GitHub Sponsors yapılandırması │ ├── 📄 mlc_config.json # Markdown link checker ayarları │ ├── 📄 PULL_REQUEST_TEMPLATE.md │ └── 📄 SECURITY.md # Güvenlik politikası │ ├── 📁 assets/ # Logo ve görsel dosyalar │ └── 🖼️ isu-logo.png # İstinye Üniversitesi logosu │ │ ├── 📁 docs/ # Teknik dokümantasyon │ ├── 📄 zafiyet-analizi.md # Zafiyet analizi ve CVSS skorlaması │ ├── 📄 mimari-analiz.md # HyperOS AVCodec mimari şeması │ ├── 📄 cozum-onerileri.md # Çözüm önerileri ve C++ yamaları │ └── 📄 README.md # Dokümantasyon rehber indeksi │ ├── 📁 research_results/ # Ödev araştırma sonuçları │ ├── 📄 Cevaplarım.md # 10 ileri düzey sorunun cevapları │ ├── 📄 SORULAR.md # Ödev soruları │ ├── 📄 yorum.md # Kişisel analiz ve yorum │ ├── 📄 simple.md # Basit açıklamalar (50 adım) │ ├── 🌐 infographic.html # Görsel zafiyet rehberi │ └── 📄 README.md # Araştırma sonuçları indeksi │ ├── 📁 poc_python/ # Python analiz araçları (Referans) │ ├── 📄 exploit.py # CVE-2025-2844 Directory Traversal PoC │ └── 📄 requirements.txt │ ├── 📁 poc_rust/ # Rust UAF simülasyonu (Ana PoC) │ ├── 📁 src/ │ │ └── 📄 main.rs # Unsafe Rust ile UAF simülasyon mantığı │ └── 📄 Cargo.toml │ ├── 🌐 simulation.html # İnteraktif web simülasyon paneli (5 sahne) ├── 📄 README.md # Bu dosya ├── 📄 CODE_OF_CONDUCT.md # Topluluk davranış kuralları ├── 📄 CONTRIBUTING.md # Katkıda bulunma rehberi ├── � TODO.md # Görev takip listesi └── ⚖️ LICENSE # MIT Lisansı ``` ## 🧠 漏洞概览 | 特性 | 详情 | | :--- | :--- | | **CVE 编号** | CVE-2025-21082 | | **漏洞类型** | Use-After-Free (CWE-416) | | **受影响组件** | Xiaomi HyperOS AVCodec Framework | | **CVSS v3.1 评分** | **8.1 (High)** | | **攻击向量** | Network | | **影响** | 潜在的远程代码执行 (RCE) | | **发现日期** | 2025年2月10日 | | **补丁日期** | 2025年2月20日 | ### 漏洞本质 ``` [Ana Thread] processFrameAsync() → Worker thread başlatılır ↓ release() çağrılır → Bellek SERBEST BIRAKILIR ⚠️ ↓ [Worker Thread] Serbest bırakılan belleğe erişmeye devam eder → UAF 💥 ``` ## 🎬 演示 您可以在下方观看展示项目编译、运行以及 Use-After-Free 模拟输出的录屏： ## 🚀 快速开始 ### 前置要求 - **Rust** 1.70 或更高版本 → [rustup.rs](https://rustup.rs/) - **Python** 3.8 或更高版本 - 现代浏览器 (Chrome, Firefox, Edge) ### 1. Rust PoC — UAF 模拟 ``` # 克隆项目 git clone https://github.com/kkaanozturk/HyperOS-Directory-Traversal-Analysis.git cd HyperOS-Directory-Traversal-Analysis/poc_rust # 以 Release 模式编译 cargo build --release ``` #### 🔴 漏洞场景 (演示 Race Condition & UAF) ``` # Windows .\target\release\cve_2025_21082_uaf_poc.exe --mode vulnerable --verbose # Linux / macOS ./target/release/cve_2025_21082_uaf_poc --mode vulnerable --verbose ``` **预期输出：** ``` 🔬 CVE-2025-21082: HyperOS AVCodec UAF PoC Mode: vulnerable ⚠️ Running vulnerable scenario... CodecContext allocated in Arc> 🧵 Starting worker thread... 🗑️ Main thread releasing codec context (UAF trigger)... Memory corrupted to simulate UAF 🔄 Worker thread accessing codec context... 🚨 UAF detected! Magic number corrupted: 0xFEEDFACE 💥 UAF vulnerability triggered on frame 0! 🚨 Vulnerable scenario completed - UAF demonstrated! ⚠️ In a real exploit, this could lead to RCE ``` #### 🟢 补丁场景 (安全同步) ``` # Windows .\target\release\cve_2025_21082_uaf_poc.exe --mode patched --verbose # Linux / macOS ./target/release/cve_2025_21082_uaf_poc --mode patched --verbose ``` **预期输出：** ``` 🔬 CVE-2025-21082: HyperOS AVCodec UAF PoC Mode: patched ✅ Running patched scenario... CodecContext allocated safely in Arc> 🧵 Starting worker thread... ⏳ Waiting for worker thread to complete (patch applied)... 🔄 Worker thread processing frames safely... ✅ Frame 0 processed successfully ✅ Frame 1 processed successfully ✅ Frame 2 processed successfully ✅ Frame 3 processed successfully ✅ Frame 4 processed successfully ✅ Worker thread completed safely 🗑️ Safely releasing codec context... ✅ Patched scenario completed - No UAF occurred! 🛡️ Proper synchronization prevents the vulnerability ``` ### 2. 交互式 Web 模拟 如果您不想设置本地服务器，可以直接点击 **[GitHub Pages 实时预览](https://kkaanozturk.github.io/HyperOS-Directory-Traversal-Analysis/simulation.html)** 链接在浏览器中体验模拟。 如果您想在本地运行： ``` # 在项目根目录下 py -m http.server 8000 # 在浏览器中打开：http://localhost:8000/simulation.html ``` 模拟包含 **5 个场景**： 1. 🧪 **实验室环境** — AVCodec pipeline 介绍 2. 🏗️ **Context 创建** — Heap 内存布局 3. ⚡ **Race Condition** — 时间线和漏洞窗口 4. 💥 **UAF 利用** — Heap 回收和 dangling pointer 5. 🛡️ **补丁对比** — 漏洞代码 vs. 补丁代码 ### 3. Python 分析工具 (旧版 PoC — 仅供参考) ``` cd poc_python py -m pip install -r requirements.txt py exploit.py -u http://hedef:5000 -f etc/shadow ``` ## 📚 技术文档 | 文档 | 内容 | | :--- | :--- | | 📊 [漏洞分析](docs/zafiyet-analizi.md) | CVE-2025-21082 技术分析，CVSS 评分，攻击场景，HyperOS 与 AOSP 的对比 | | 🏗️ [架构图](docs/mimari-analiz.md) | AVCodec async pipeline，组件图，race condition 流程图 | | 🛡️ [修复建议](docs/cozum-onerileri.md) | 漏洞/补丁 C++ 代码示例，RAII pattern，MTE，CFI，ASan 集成 | | 📋 [研究结果](research_results/README.md) | 作业问题，10 个高级问题的解答，个人分析与视觉指南 | ## 🔬 技术细节 ### 漏洞代码模式 (C++) ``` class AVCodecContext { void processFrameAsync() { worker_thread_ = std::thread([this]() { buffer_->processFrame(); // Worker thread çalışıyor }); // ❌ join() yok — race condition! } void release() { delete buffer_; // ❌ Worker hâlâ çalışırken bellek serbest bırakılıyor buffer_ = nullptr; } }; ``` ### 补丁代码模式 (C++) ``` class AVCodecContext { void release() { shutdown_requested_ = true; worker_cv_.notify_all(); if (worker_thread_.joinable()) { worker_thread_.join(); // ✅ Thread tamamlanana kadar bekle } delete buffer_; // ✅ Güvenli temizlik } }; ``` ### Rust 模拟 — UAF 检测 ``` unsafe fn process_frame(&mut self) -> bool { // Magic number bozulduysa UAF gerçekleşmiş demektir if self.magic != 0xDEADBEEF { println!("🚨 UAF tespit edildi! Magic: 0x{:08X}", self.magic); return false; } self.frame_counter += 1; true } ``` ## 🛡️ 防御策略 | 方法 | 描述 | 有效性 | | :--- | :--- | :---: | | **Thread 同步** | 使用 `join()` 等待 thread 完成 | ⭐⭐⭐⭐⭐ | | **引用计数** | 使用 `shared_ptr` 进行自动生命周期管理 | ⭐⭐⭐⭐⭐ | | **RAII Pattern** | 使用 Destructor 进行自动资源清理 | ⭐⭐⭐⭐ | | **AddressSanitizer** | 编译时 UAF 检测 | ⭐⭐⭐⭐ | | **MTE (ARM64)** | 硬件级内存标记 | ⭐⭐⭐⭐⭐ | | **CFI** | 控制流完整性保护 | ⭐⭐⭐ | ## ⚠️ 免责声明 ## 📄 许可证 本项目基于 **MIT License** 授权。详情请查看 [LICENSE](LICENSE) 文件。

*本项目专为教育目的而制作* ## 👤 开发者项目信息 | | | | :--- | :--- | | 👤 **姓名** | Mevlit Kaan Öztürk | | 🔢 **学号** | 2520191003 | | 🏛️ **专业** | 信息技术安全 | | 🎓 **机构** | İstinye 大学 | | 📚 **课程/范围** | BGT006 — 渗透测试期末作业 |

标签：Go语言工具, Mutation, Python, Rust, Use-After-Free, 可视化, 可视化界面, 后端开发, 多模态安全, 无后门, 漏洞分析, 网络流量审计, 路径探测, 逆向工具