full-disclosure - Sapphire SQL Worm Analysis Complete

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From: mattmurphy at kc.rr.com (Matthew Murphy)
Subject: Sapphire SQL Worm Analysis Complete

I've completed an analysis of the 'Sapphire' SQL worm targeting MS-SQL
servers.  Some have reported massive slowdowns.  An interesting part of this
worm results from its use of UDP.  Attacked hosts/networks may generate ICMP
Host/Port Unreachable messages in response to a Sapphire attack, amplifying
the attack's strength.  One other reason that this attack is worse for users
of home systems, etc. that don't run any servers, is because Sapphire sends
the entire 400 bytes or so in the initial packet, where scans from Code Red
and bretheren only prompted a 26 byte (or so) TCP SYN packet.

The full analysis is available at:
http://www.techie.hopto.org/sqlworm.html