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Vulnerability Score 5.0 5.0
CVE Id CVE-1999-1075
Last Modified 05 Sep 2008 04:18:39
Published 18 Mar 1998 12:00:00
Confidentiality Impact NONE NONE
Integrity Impact NONE NONE
Availability Impact PARTIAL PARTIAL
Access Vector NETWORK
Access Complexity LOW
Authentication NONE



inetd in AIX 4.1.5 dynamically assigns a port N when starting ttdbserver (ToolTalk server), but also inadvertently listens on port N-1 without passing control to ttdbserver, which allows remote attackers to cause a denial of service via a large number of connections to port N-1, which are not properly closed by inetd.

Vulnerable Systems

Operating System

  • Ibm Aix 4.1.5


BUGTRAQ - 19980318 AIX 4.1.5 DoS attack (aka "Port 1025 problem")

Last Updated: 27 May 2016 10:35:16