Oracle listener in Oracle 8i on Solaris allows remote attackers to cause a denial of service via a malformed connection packet with a maximum transport data size that is set to 0.
https://exchange.xforce.ibmcloud.com/vulnerabilities/6715
http://xforce.iss.net/alerts/advise82.php
http://otn.oracle.com/deploy/security/pdf/net8_dos_alert.pdf