[NEWS] Fore/Marconi ATM Switch 'land' Vulnerability

From: support@securiteam.com
Date: 06/15/02 

From: support@securiteam.com
To: list@securiteam.com
Date: Sat, 15 Jun 2002 21:32:51 +0200 (CEST)

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  Fore/Marconi ATM Switch 'land' Vulnerability
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SUMMARY

Marconi ATM switches has been found to contain a security vulnerability
that would allow a remote attacker able to access the telnet port open by
default on the switch, to cause a denial of service attack.

DETAILS

Vulnerable systems:
 * Marconi ForeThought version 6.1.1
 * Marconi ForeThought version 7.0.1

Libratory testing indicates that a single 'land' packet sent to the telnet
port (23) of either the inbound or outbound interface will cause the
device to stop responding to ip traffic. Over the course of 6-1/2 minutes,
all CPU will be consumed and device reboots.

Basically a packet is forged with the source and destination IP address
and ports identical.

Vendors status:
The vendor was informed 1 year ago.

ADDITIONAL INFORMATION

The information has been provided by <mailto:seeker_sojourn@hotmail.com>
Seeker of Truth.

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