Go Amavis etc.,
------- Forwarded Message
Date: Tue, 20 Jun 2000 13:08:27 +0000
From: chris.paget at analysys.com
To: BUGTRAQ at SECURITYFOCUS.COM
Subject: NAI WebShield SMTP does not scan base64 encoding
While investigating todays virus outbreak (Stages.Worm), I noticed
that our email virus scanner (NAI WebShield SMTP 4.5, engine 4.0.50,
DAT 4.0.4082, 14/06/00) was not picking up all attachments.
The server is configured to block all SHS, VBS, etc attachments, and
notify the sender. However, when these are sent as Base64 encoding
(rather than 8-bit), they are passed by the server, and could
potentially infect the network. 8-bit attachments are successfully
scanned (and blocked if necessary).
------- End of Forwarded Message
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