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.
Affected Version(s)
| Product | Affected Version(s) | Platform | Language(s) |
|---|---|---|---|
| Smart Protection Server | Versions 3.1, 3.2 | Linux | English |
Primary Solution
Trend Micro has released the following solutions to address the issue:
| Product | Updated version | Notes | Platform | Availability |
|---|---|---|---|---|
| Smart Protection Server | Version 3.2 B1086 | Readme | Linux | Now |
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)
- Log on to the Smart Protection Server terminal.
- 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
