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Detecting password protected Microsoft Office and PDF documents in InterScan Messaging Security (IMSx) products

    • Updated:
    • 8 Jul 2021
    • Product/Version:
    • InterScan Messaging Security Virtual Appliance 8.5
    • InterScan Messaging Security Virtual Appliance 9.0
    • Platform:
    • Linux - Red Hat RHEL 4 32-bit
    • Linux - Red Hat RHEL 5 32-bit
    • Windows 2003 Standard
Summary

Know the possibility to set actions on password protected MS Office and PDF documents.
Example of actions are deleting attachments, quarantine messages, etc.

IMSVA has the inbuilt scanning condition to allow for detection of  password protected zip file attachments.
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Using the procedure below it is possible to enable IMSVA to use this scanning condition to also detect password protected Microsoft Office files and password protected PDF's.

Details
Public

Although Virus Scan API (VSAPI) 9.7x can recognize password protected Office files, IMSx products currently does not have the option to take action dedicated for password protected Office files.

However, we can configure IMSVA to treat password protected Office and pdf files in the same way as the password protected zip files.

  1. Set or add the following line in /opt/trend/imss/config/imss.ini file under [general] section:

    emgrEnablePwdOfficeFileDetect=yes


    With this parameter enabled IMVSA will apply the action configured for password protected zip files to password protected MS Office and PDF documents.

    Note: if a password protected Office or pdf document is contained within a zip file (with no password), then the attachment will not trigger the scanning condition.
    To enable IMSVA to detect password protected office and pdf documents that are contained within a zip file add the following line to the General section of imss.ini 

    KeepZipExtractErrorCode=yes

     

  2. Restart the IMSVA services using the command below:

    #/opt/trend/imss/script/imssctl.sh restart

With these hidden keys, IMSVA will treat both password protected office and pdf files in the same way as password protected zip files.

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Rating:
Category:
Configure; Troubleshoot
Solution Id:
1102599
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