[56873] in North American Network Operators' Group

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VU#464113 - TCP/IP implementations handle unusual flag combinations

daemon@ATHENA.MIT.EDU (Ian Finlay)
Thu Mar 20 12:46:24 2003

Date: Thu, 20 Mar 2003 12:45:12 -0500 (EST)
From: Ian Finlay <iaf@cert.org>
To: nanog@merit.edu
Errors-To: owner-nanog-outgoing@merit.edu


Hello,

This may be old news to many, but I wanted to follow-up to the message I 
sent last October on this subject:

<http://www.merit.edu/mail.archives/nanog/2002-10/msg00519.html>

We have now published information about this issue here:

<http://www.kb.cert.org/vuls/id/464113>

We also have a few reports of possible exploitation. 

If you have feedback, please send mail to cert@cert.org with VU#464113 in 
the subject header. 

Thanks to the NANOG community for prior feedback on this issue.

Regards,
Ian

Ian Finlay
Internet Systems Security Analyst - CERT/CC Operations 
Networked Systems Survivability Program
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CERT (R) Coordination Center             Email: cert@cert.org
Software Engineering Institute           WWW: http://www.cert.org
Carnegie Mellon University               Hotline: +1-412-268-7090
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