CVE-2019-0567 is a remote code execution vulnerability in the Chakra scripting engine used by Microsoft Edge and ChakraCore. The vulnerability arises from improper handling of objects in memory, which can lead to memory corruption. An attacker who successfully exploits this vulnerability could execute arbitrary code in the context of the current user by convincing them to visit a specially crafted website.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos (1 hidden).
This repository is a JavaScript-based exploit framework targeting the Microsoft Chakra JavaScript engine, specifically leveraging a type confusion vulnerability (e.g., CVE-2019-0555) to achieve sandbox escape and arbitrary code execution on Windows. The structure is modular, with each file implementing a component of the exploit chain: - `src/framework.js` contains the main exploit logic, including the vulnerability trigger (type confusion), memory primitives, and the exploit orchestrator. - `src/sandbox_escape.js` implements sandbox escape classes for different CVEs, with a detailed implementation for CVE-2019-0555. This class uses Windows COM APIs to instantiate objects and execute arbitrary commands via XSLT and ActiveX. - `src/aslr.js`, `src/memory_manager.js`, `src/rop.js`, and `src/primitive.js` provide low-level primitives for memory manipulation, ROP chain construction, and address resolution within the Chakra process. - `src/winapi.js` abstracts WinAPI calls, allowing the exploit to dynamically resolve and invoke Windows API functions. - `src/pattern_scan.js` is used for scanning the Chakra binary for ROP gadgets. - `src/index.html` is the browser entry point, providing a UI to trigger the exploit in a browser context. The exploit achieves arbitrary read/write in the browser process, constructs a ROP chain to call Windows APIs, and leverages COM to escape the browser sandbox and execute arbitrary commands (e.g., launching calc.exe). The code is operational and demonstrates a full exploit chain from browser memory corruption to sandbox escape and code execution. The main attack vector is via a malicious web page loaded in a vulnerable browser. The code is modular and can be adapted for other similar vulnerabilities in Chakra or other browser engines.
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1 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
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