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SECURITY BULLETIN: July 28, 2021, Security Bulletin for Worry-Free Business Security

    • Updated:
    • 28 Jul 2021
    • Product/Version:
    • Worry-Free Business Security Advanced 10.0
    • Platform:
Summary
Release Date: July 28, 2021
CVE Identifier(s): CVE-2021-36741, CVE-2021-36742
Platform(s): Windows
CVSS 3.0 Score(s): 7.1 - 7.8
Severity Rating(s): High

Trend Micro has released a new patch for Trend Micro Worry-Free Business Security 10.0 SP1. This patch resolves multiple vulnerabilities related to arbitrary file upload and local privilege escalation.

 
Please note - Trend Micro has observed an active attempt of exploitation against two of these vulnerabilities (chained) in-the-wild (ITW) in a very limited number of instances, and we have been in contact with these customers already. All customers are strongly encouraged to update to the latest versions as soon as possible.
 
Details
Public

Affected Version(s)

ProductAffected Version(s)PlatformLanguage(s)
Worry-Free Business Security10.0 SP1WindowsEnglish


Solution

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

ProductUpdated versionNotesPlatformAvailability
Worry-Free Business Security10.0 SP1 Patch 2329ReadmeWindowsAvailable Now

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.

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-2021-36741: Arbitrary File Upload Vulnerability
CVSSv3: 7.1: AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
An improper input validation vulnerability in Trend Micro Worry-Free Business Security 10.0 SP1 allows a remote attached to upload arbitrary files on affected installations.

Please note: an attacker must first obtain the ability to logon to the product’s management console 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 in connection with CVE-2021-36742.
 

CVE-2021-36742: Local Privilege Escalation Vulnerability
CVSSv3: 7.8: AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
A improper input validation vulnerability in Trend Micro Worry-Free Business Security 10.0 SP1 allows a local attacker to escalate privileges on affected installations.

Please note: an attacker must first obtain the ability to execute low-privileged code 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 in connection with CVE-2021-36741.
 


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.

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


External Reference(s)

Premium
Internal
Partner
Rating:
Category:
Update
Solution Id:
000287820
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