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Affected Version(s)

ProductAffected Version(s) Platform Language(s) 
Apex One 2019 (On-prem)WindowsEnglish
Apex One as a Service SaaSWindowsEnglish
Worry-Free Business Security 
(WFBS)
10.0 SP1WindowsEnglish
Worry-Free Business Security Services 
(WFBSS)
SaaSWindowsEnglish


Solution

Trend Micro has released the following solutions to address the issue:

ProductUpdated Version* NotesPlatform Availability 
Apex One SP1 Patch 1 (B12380)  Readme  WindowsNow Available 
Apex One as a Service July 2023 Monthly Patch (202307)
Agent Version:  14.0.12637
ReadmeWindowsNow Available
WFBS10.0 SP1 Patch 2495Readme  WindowsNow Available
WFBSSJuly 31, 2023
Monthly Maintenance Release
Agent Version: 6.7.3578 / 14.3.1105 
 WindowsNow Available

These are the minimum recommended version(s) of the patches and/or builds required to address the issue. Trend Micro highly encourages customers to obtain the latest version of the product if there is a newer one available than the one listed in this bulletin.
 

* Please note that the vulnerability listed below may have been addressed in an earlier monthly SaaS update that the one currently available, but Trend Micro strongly recommends that Apex One as a Service and WFBSS customers always have the latest version deployed to ensure all issues are properly resolved.
 
Customers are encouraged to visit Trend Micro’s Download Center to obtain prerequisite software (such as Service Packs) before applying any of the solutions above.

 


Vulnerability Details

CVE-2023-41179Arbitrary Code Execution Vulnerability
CVSSv3: 9.1: AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
A vulnerability in the 3rd party AV uninstaller module contained in Trend Micro Apex One, Worry-Free Business Security and Worry-Free Business Security Services could allow an attacker to manipulate the module to execute arbitrary commands on an affected installation.

Note that an attacker must first obtain administrative console access on the target system in order to exploit this vulnerability.
 
ITW Alert: Trend Micro has observed at least one active attempt of potential exploitation of this vulnerability in the wild.
 


Mitigating Factors

Exploiting these type of vulnerabilities generally require that an attacker has access (physical or remote) to a vulnerable machine. In addition to timely application of patches and updated solutions, customers are also advised to review remote access to critical systems and ensure policies and perimeter security is up-to-date.

Customers may also consider restricting access to the product management console.

However, even though an exploit may require several specific conditions to be met, Trend Micro strongly encourages customers to update to the latest builds as soon as possible.


Acknowledgement

Trend Micro would like to thank the following individuals for responsibly disclosing these issues and working with Trend Micro to help protect our customers:

  • Trend Micro Research (Internal)