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SECURITY BULLETIN: Trend Micro Smart Protection Server (Standalone) 3.x OS Command Injection Vulnerability

    • Updated:
    • 23 Aug 2017
    • Product/Version:
    • Smart Protection Server 3.1
    • Smart Protection Server 3.2
    • Platform:
    • N/A N/A
Summary
Release Date: August 23, 2017
Trend Micro Vulnerability Identifier(s): VRTS-942
CVE Identifier(s): CVE-2017-11395
Platform(s): Linux
CVSS 3.0 Score(s): 3.5
Severity Rating(s): Low

Trend Micro has released a repacked build of Trend Micro Smart Protection Server (Standalone) 3.2.  This build resolves a command injection vulnerability found in the Smart Protection Server (SPS) Administration UI.

Details
Public

Affected Version(s)

ProductAffected Version(s)PlatformLanguage(s)
Smart Protection ServerVersions 3.1, 3.2LinuxEnglish

 

Primary Solution

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

ProductUpdated versionNotesPlatformAvailability
Smart Protection ServerVersion 3.2 B1085ReadmeLinuxNow

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.

 

Alternate Solution

The specific file that contains the vulnerability is unused in later versions of the product can be manually removed via command line if the administrator cannot upgrade the product quickly.

(Must be performed by a user with sufficient privileges)

1. Log on to the Smart Protection Server terminal.

2. Execute the following command to remove the file in question:

rm -f /var/www/AdminUI/php/cm_agent.php 

 

Vulnerability Details

This update resolves a command injection vulnerability found in the Smart Protection Server Administration UI.  In particular, the cm_agent.php script did not sanitize input parameters before executing a system command.

Due to the seriousness of any vulnerability, customers are highly encouraged to update to the latest build as soon as possible.

 

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:

  • Maximiliano Vidal from Core Security Consulting Services

 

External Reference(s)

CVE-2017-11395
Core Security Advisory: CORE-2017-0004
Premium
Internal
Rating:
Category:
Update
Solution Id:
1117933
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