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SECURITY BULLETIN: November 2020 Security Bulletin for Trend Micro Worry-Free Business Security

    • Updated:
    • 17 Nov 2020
    • Product/Version:
    • Worry-Free Business Security Advanced 10.0
    • Worry-Free Business Security Standard 10.0
    • Platform:
Summary
Release Date: November 16, 2020
CVE Identifier(s): CVE-2020-24563 through 24565; CVE-2020-25770 through CVE-2020-25772; CVE-2020-28574
Platform(s): Windows
CVSS 3.0 Score(s): 3.3 - 10.0
Severity Rating(s): Low - Critical

Trend Micro has released a new patch for Trend Micro Worry-Free Business Security. This patch resolves multiple vulnerabilities related to out-of-bounds read information disclosure, authentication bypass and a CRITICAL one related to unauthenticated path traversal arbitrary remote file deletion.

Details
Public

Affected Version(s)

ProductAffected Version(s)PlatformLanguage(s)
Worry-Free Business Security (WFBS) 10 SP1WindowsEnglish


Solution

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

ProductUpdated versionNotesPlatformAvailability
WFBS10 SP1 Patch 2260 *ReadmeWindowsNow Available

*Please note that some of the vulnerabilities were actually addressed in a previous patch (2245); however, since a critical one is included in 2260, it is highly recommended that customers obtain the latest version to ensure coverage of all vulnerabilities.

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-2020-24563Authentication Bypass Vulnerability
CVSSv3: 7.8: AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
A vulnerability in Trend Micro Worry-Free Business Security 10 SP1 may allow a local attacker to manipulate the process of the security agent unload option (if configured), which then could be manipulated to gain a privilege escalation and code execution.

An attacker must first obtain the ability to execute low-privileged code on the target in order to exploit this vulnerability.

CVE-2020-24564, CVE-2020-24565, CVE-2020-25770, CVE-2020-25771, CVE-2020-25772Out-of-Bounds Read Information Disclosure Vulnerabilities
CVSSv3: 5.6: AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:H/E:P/CR:L/IR:L/AR:L
Several out-of-bounds read information disclosure vulnerabilities in Trend Micro Worry-Free Business Security 10 SP1 may allow a local attacker to disclose sensitive information to an unprivileged account on vulnerable installations of the product.

An attacker must first obtain the ability to execute low-privileged code on the target in order to exploit these vulnerabilities.

CVE-2020-28574Unauthenticated Path Traversal Arbitrary Remote File Deletion Vulnerability  
CRITICAL CVSSv3: 10.0: AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H 
A unauthenticated path traversal arbitrary remote file deletion vulnerability in Trend Micro Worry-Free Business Security 10 SP1 could allow an unauthenticated attacker to exploit the vulnerability and modify or delete arbitrary files on the product's management console. 


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.

Newer versions of the operating system (e.g. Windows 10) may protect against some vulnerabilities such as hard link privilege escalations.

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/organizations for responsibly disclosing these issues and working with Trend Micro to help protect our customers:


External Reference(s)

The following advisories may be found at Trend Micro's Zero Day Initiative Published Advisories site:
  • ZDI-20-1218
  • ZDI-20-1219
  • ZDI-20-1220
  • ZDI-20-1221
  • ZDI-20-1222
  • ZDI-20-1223
Other References
  • Tenable TRA-2020-62
Premium
Internal
Partner
Rating:
Category:
Update
Solution Id:
000281948
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