[Mimedefang] MIMEDefang 2.21 is released - Important Security Note

[Rich West]

Umm.. I just downloaded and built 2.21, but the mime-tools-patch.txt 
file is not part of the distribution...

-Rich



David F. Skoll wrote:

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>Hi,
>
>MIMEDefang 2.21 is released.  Also, a new version of the patched MIME-tools
>has been put on the MIMEDefang site.  Get everything at:
>
>	http://www.roaringpenguin.com/mimedefang/
>
>Aviram Jenik posted a note on Bugtraq:
>
>	http://online.securityfocus.com/archive/1/291514
>
>detailing how to bypass SMTP security scanners.  MIMEDefang 2.20 and
>earlier are vulnerable to this attack in their default configurations.
>I recommend performing *both* of the following steps
>
>1) Upgrade to the new MIME-Tools suite from my Web site.
>2) Upgrade to MIMEDefang 2.21.  Be sure to upgrade your filter, too;
>   see below.
>
>Note that either step (1) or (2) alone will thwart the attack; I
>still recommend doing both.
>
>If, for some reason, you do not want to upgrade, then put the following
>code in your filter() and filter_multipart() routines:
>
># Block message/partial parts
>if (lc($type) eq "message/partial") {
>    action_quarantine_entire_message("Message quarantined because of message/partial type");
>    return action_discard();
>}
>
>The new sample filter does just that.  Full changelog appended.
>
>Regards,
>
>David.
>2002-09-12  David F. Skoll  <dfs at roaringpenguin.com>
>
>	* Version 2.21 RELEASED
>
>	* Removed mime-tools-patch.txt.  Instead, download the patched
>	MIME-Tools tarball from the MIMEDefang site.
>
>	* Documented $WarningLocation
>
>	* SECURITY UPDATE: Default filter rejects attachments of type
>	"message/partial".  See
>	http://online.securityfocus.com/archive/1/291514
>
>2002-09-10  David F. Skoll  <dfs at roaringpenguin.com>
>
>	* mimedefang-multiplexor.c (statsLog): Do not log the date/time
>	if we log stats using syslog; it's redundant.  We still include
>	a UNIX timestamp.
>
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