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Vulnerability Score 5.0 5.0
CVE Id CVE-2001-1533
Last Modified 05 Sep 2008 04:26:47
Published 31 Dec 2001 12:00:00
Confidentiality Impact NONE NONE
Integrity Impact NONE NONE
Availability Impact PARTIAL PARTIAL
Access Vector NETWORK
Access Complexity LOW
Authentication NONE



** DISPUTED * Microsoft Internet Security and Acceleration (ISA) Server 2000 allows remote attackers to cause a denial of service via a flood of fragmented UDP packets. NOTE: the vendor disputes this issue, saying that it requires high bandwidth to exploit, and the server does not experience any instability. Therefore this "laws of physics" issue might not be included in CVE.

Vulnerable Systems


  • Microsoft Isa Server 2000


BID - 3501

XF - isa-udp-flood-dos(7446)

BUGTRAQ - 20051101 RE: Microsoft ISA Server Fragmented Udp Flood Vulnerability

BUGTRAQ - 20011102 Microsoft ISA Server Fragmented Udp Flood Vulnerability

Last Updated: 27 May 2016 10:36:42