ROOTECSTAK🛡️👾
ROOTECSTAK🛡️👾
February 15, 2025 at 12:50 PM
*DID YOU KNOW?* Rowhammer exploits bit flips in DRAM to gain arbitrary memory access, even bypassing Error-Correcting Code (ECC) memory. *Quick Exploit* : Flip Bits via One-Location Rowhammer 1. Map a large chunk of DRAM and repeatedly access adjacent rows: for (int i = 0; i < 1000000; i++) {     *(volatile int*)addr1;     *(volatile int*)addr2; } 2. Check for bit flips in protected memory regions. 3. Use privilege escalation tricks (e.g., flipping sudo permissions in /etc/sudoers). *Mitigation:* 1. Use Target Row Refresh (TRR) memory modules, which block excessive row accesses. 2. Enable DRAM encryption (AMD SME, Intel TME) to prevent Rowhammer-induced bit flips. 3. Deploy CPU-assisted mitigations like ARM PACs (Pointer Authentication Codes).

Comments