MS Office 2007 File Problems

Andrew Bruce abruce at hope-st.ath.cx
Thu Jun 11 01:11:35 IST 2009


Are rules not processed in order?  

Surely an allow line higher in the list would be matched first and the
attachment allowed through, before the deny rule stops them?

AB

On Wed, 10 Jun 2009 18:27:51 -0500, Alex Neuman  wrote:  

Because you have the "double file extension" rule set, and files inside
the compress office docx files have dotsomethingdotsomethinelsedotblah in
them.
On Wed, Jun 10, 2009 at 4:15 PM, Andrew Bruce  wrote:
Hi,

I'm having some trouble with Office 2007 files not being allowed through
MailScanner.

I've got these (applicable) rules in my filename.rules.conf:

# docx
allow .docx$ - -
allow .xml[0-9].rel$ - -

# Allow repeated file extension, e.g. blah.zip.zip
allow (.[a-z0-9]{3})1$ - -

# Deny all other double file extensions. This catches any hidden
filenames.
deny .[a-z][a-z0-9]{2,3}s*.[a-z0-9]{3}$ Found possible filename hiding
Attempt to hide real filename extension

Yet am still seeing results like this:
Report: MailScanner: Attempt to hide real filename extension
(document.xml.rel)
MailScanner: Attempt to hide real filename extension (settings.xml.rel)
Report: MailScanner: Attempt to hide real filename extension
(document.xml1.rel)
MailScanner: Attempt to hide real filename extension (settings.xml1.rel)
Report: MailScanner: Attempt to hide real filename extension
(document.xml1.rel)
Report: MailScanner: Attempt to hide real filename extension
(document.xml.rel)
Report: MailScanner: Attempt to hide real filename extension
(settings.xml.rel)
Report: MailScanner: Attempt to hide real filename extension
(settings.xml1.rel)

I'm running MailScanner version 4.61.7 (yes, I will be upgrading this
when
I can afford the server downtime).

Any idea why this would be?

Thanks,

Andrew
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Links:
------
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