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Trend Micro InterScan Web Security Virtual Appliance (IWSVA) 6.5 Multiple Vulnerabilities

    • Updated:
    • 10 Aug 2017
    • Product/Version:
    • InterScan Web Security Virtual Appliance 6.5
    • Interscan Web Security Virtual Appliance 6.5
    • Platform:
    • CentOS 6 32-bit
    • CentOS 6 64-bit
Release Date: March 28, 2017
Trend Micro Vulnerability Identifier(s): VRTS-15, 92, 218, 466, 474, 477-479, 483, 484, 488, 489, 491, 493-498, 501-507, 530, 532, 533, 535, 538, 540, 542, 544, 545, 548, 549, 553, 557, 559, 564, 566, 569 
CVE Vulnerability Identifier(s): CVE-2017-6338, CVE-2017-6339, CVE-2017-6340
Platform(s): Virtual Appliance
CVSS 2.0 Score(s): 4.0 - 10
Severity Rating(s): Medium & High

Trend Micro has released a new Critical Patch (CP) for Trend Micro InterScan Web Security Virtual Appliance (IWSVA) 6.5.  This CP resolves multiple vulnerabilities in the product that could potentially allow a remote attacker to execute artibtrary code on vulnerable installations.



Affected Version(s)

ProductAffected Version(s)PlatformLanguage(s)
IWSVAVersion 6.5Virtual ApplianceEnglish


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

ProductUpdated versionNotesPlatformAvailability
IWSVAVersion 6.5 CP 1746*ReadmeVirtual ApplianceNow

* Version 6.5 CP 1746 requires Version 6.5 SP2 Patch 1 (b1707) as a prerequisite and both are required to fully remediate the vulnerabilities covered 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

This update resolves multiple vulnerabilities in Trend Micro InterScan Web Security Virtual Appliance (IWSVA) 6.5 in which a remote attacker could potentially attain code execution.

These include:

  • Command Injection Remote Command Execution (RCE)
  • Directory Traversal
  • Privilege Escalation
  • Authentication Bypass
  • Information Disclosure
  • Stored Cross-Site Scripting (XSS)

Due to the seriousness of these vulnerabilities, customers are highly encouraged to apply this CP 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.


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

  • Steven Seeley of Source Incite working with Trend Micro's Zero Day Initiative
  • Kapil Khot (@Kapil_Khot), Vulnerability Researcher and Signature Developer, Qualys
  • Steffen Ulrich

External Reference(s)

The following advisories may be found at Trend Micro's Zero Day Initiative Published Advisories site:


In addition, the following CVEs have been reserved and/or issued:
Solution Id:
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