nyx/tests/dynamic_fixtures/escape/namespace_escape.py
2026-06-05 10:16:30 -05:00

24 lines
694 B
Python

"""Escape attempt: unshare PID namespace to hide from host ps.
Requires CAP_SYS_ADMIN. Expected outcome: EPERM.
"""
import ctypes
import ctypes.util
import sys
CLONE_NEWPID = 0x20000000
try:
libc_name = ctypes.util.find_library("c")
if not libc_name:
raise OSError("libc not found")
libc = ctypes.CDLL(libc_name, use_errno=True)
ret = libc.unshare(CLONE_NEWPID)
if ret == -1:
errno = ctypes.get_errno()
raise OSError(errno, f"unshare(CLONE_NEWPID) blocked errno={errno}")
print("NYX_ESCAPE_SUCCESS: created new PID namespace")
sys.exit(0)
except (PermissionError, OSError) as e:
print(f"BLOCKED: {e}", file=sys.stderr)
sys.exit(1)