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Cisco Bug: CSCuq71053 - OOXML files with non-standard file order are mis-detected as zip files

Last Modified

Feb 28, 2020

Products (1)

  • Cisco Email Security Appliance

Known Affected Releases

8.0.1-023 8.5.6-074 9.1.1-051

Description (partial)

Some Office 2010 and above documents, such as .docx or .xslx files may be detected incorrectly as ZIP files by the "Attachment File Info" -> "File type is" content filter condition or the 'attachment-filetype' message filter rule.

This has been identified as caused by files whose internal file order is non-standard, where the '[Content_Types].xml' file is not the first file in the archive.

Related Community Discussions

ED Availability of AsyncOS 9.1.0-032 for ESA
Cisco is pleased to announce a new major release of AsyncOS 9.1.0 for Email.  This release applies to all our Email Security Appliances (C-Series, X-Series, and virtual appliances) with 8GB of RAM, and the C170 appliance.   Please note that the following hardware is  NOT  supported for this release: C160, C360, C660, and X1060    New Enhancements in AsyncOS 9.1.0 for Email File Analysis quarantine improvements:  Messages can now be automatically released or deleted from the centralized File Analysis ...
Latest activity: Apr 30, 2015
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