[NT] Microsoft ISA Server 2000 DoS

2005-06-02T00:00:00
ID SECURITYVULNS:DOC:8780
Type securityvulns
Reporter Securityvulns
Modified 2005-06-02T00:00:00

Description

The following security advisory is sent to the securiteam mailing list, and can be found at the SecuriTeam web site: http://www.securiteam.com - - promotion

The SecuriTeam alerts list - Free, Accurate, Independent.

Get your security news from a reliable source. http://www.securiteam.com/mailinglist.html


Microsoft ISA Server 2000 DoS

SUMMARY

" <http://www.microsoft.com/isaserver/default.mspx> Microsoft Internet Security and Acceleration (ISA) Server is the advanced stateful packet and application-layer inspection firewall, virtual private network (VPN), and Web cache solution that enables enterprise customers to easily maximize existing information technology (IT) investments by improving network security and performance."

Microsoft Internet Security and Acceleration Server's Firewall crashes when heavy network traffic is received from a SecureNAT client.

DETAILS

Vulnerable Systems: * SA Server 2000 and ISA Server 2000 Service Pack 2 (SP2) Wspsrv.exe version 3.0.1200.411 and prior

Workaround: Limit the size of traffic being handled by the ISA server for each SecureNAT client contacting it.

Disclosure Timeline: 01-06-2005 - Vulnerability researched 02-06-2005 - Security companies and several CERT units contacted, advisory published, link to advisory sent to security companies and several CERT units

ADDITIONAL INFORMATION

The information has been provided by <mailto:juha-matti.laurio@netti.fi> Juha-Matti Laurio . The original article can be found at:
<http://www.networksecurity.fi/advisories/windows-isa-firewall.html> http://www.networksecurity.fi/advisories/windows-isa-firewall.html The vendor advisory can be found at :
<http://support.microsoft.com/kb/894864/EN-US/> http://support.microsoft.com/kb/894864/EN-US/

========================================

This bulletin is sent to members of the SecuriTeam mailing list. To unsubscribe from the list, send mail with an empty subject line and body to: list-unsubscribe@securiteam.com In order to subscribe to the mailing list, simply forward this email to: list-subscribe@securiteam.com

====================

DISCLAIMER: The information in this bulletin is provided "AS IS" without warranty of any kind. In no event shall we be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages.