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List:       bugtraq
Subject:    Trend Micro Security 2019 (Consumer) Multiple Products Security Bypass Protected Service Tampering C
From:       apparitionsec () gmail ! com
Date:       2020-01-21 1:18:30
Message-ID: 202001210118.00L1IUxk006058 () ip-100-122-145-1 ! us-east-1 ! ec2 ! aws ! symcpe ! net
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[+] Credits: John Page (aka hyp3rlinx)		
[+] Website: hyp3rlinx.altervista.org
[+] Source:  http://hyp3rlinx.altervista.org/advisories/TREND-MICRO-SECURITY-CONSUMER-SECURITY-BYPASS-PROTECTED-SERVICE-TAMPERING.txt
 [+] ISR: ApparitionSec          


[Vendor]
www.trendmicro.com


[Product]
Trend Micro Security 2019 (Consumer) Multiple Products


Trend Micro Security provides comprehensive protection for your devices.
This includes protection against ransomware, viruses, malware, spyware, and identity \
theft.


[Vulnerability Type]
Security Bypass Protected Service Tampering


[CVE Reference]
CVE-2019-19697


[Security Issue]
Trend Micro Maximum Security is vulnerable to arbitrary code execution as it allows \
for creation of registry key to target a process running as SYSTEM. This can allow a \
malware to gain elevated privileges to take over and shutdown services that require \
SYSTEM privileges like Trend Micros "Asmp" service "coreServiceShell.exe" which does \
not allow Administrators to tamper with them.

This could allow an attacker or malware to gain elevated privileges and tamper with \
protected services by disabling or otherwise preventing them to start. Note \
administrator privileges are required to exploit this vulnerability.


[CVSS 3.0 Scores: 3.9]


[Affected versions]
Platform Microsoft Windows
Premium Security 2019 (v15)
Maximum Security 2019 (v15)
Internet Security 2019 (v15)
Antivirus + Security 2019 (v15)


[References]
https://esupport.trendmicro.com/en-us/home/pages/technical-support/1124090.aspx


[Exploit/POC]
1) Create a entry for the following registry key targeting "PtWatchdog.exe" and set \
the debugger string value to an arbitrary executable to gain SYSTEM privs. \
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution \
Options\PtWatchdog.exe

2) Create a string named "debugger" under the reg key and give it the value of the \
executable you wish to run as SYSTEM.

3) Restart the machine or wait until service is restart then you get SYSTEM and can \
now disable Trend Micro endpoint security coreServiceShell.exe service


[Network Access]
Local


[Severity]
Low


[Disclosure Timeline]
Vendor Notification: October 8, 2019
Vendor confirms issue: October 28, 2019
Vendor release date: January 14, 2020
January 16, 2020 : Public Disclosure


[+] Disclaimer
The information contained within this advisory is supplied "as-is" with no warranties \
or guarantees of fitness of use or otherwise. Permission is hereby granted for the \
redistribution of this advisory, provided that it is not altered except by \
reformatting it, and that due credit is given. Permission is explicitly given for \
insertion in vulnerability databases and similar, provided that due credit is given \
to the author. The author is not responsible for any misuse of the information \
contained herein and accepts no responsibility for any damage caused by the use or \
misuse of this information. The author prohibits any malicious use of security \
related information or exploits by the author or elsewhere. All content (c).

hyp3rlinx


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