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Vulnerability Score 5.0 5.0
CVE Id CVE-2002-2053
Last Modified 05 Sep 2008 04:32:12
Published 31 Dec 2002 12:00:00
Confidentiality Impact NONE NONE
Integrity Impact NONE NONE
Availability Impact PARTIAL PARTIAL
Access Vector NETWORK
Access Complexity LOW
Authentication NONE



The design of the Hot Standby Routing Protocol (HSRP), as implemented on Cisco IOS 12.1, when using IRPAS, allows remote attackers to cause a denial of service (CPU consumption) via a router with the same IP address as the interface on which HSRP is running, which causes a loop.

Vulnerable Systems

Operating System

  • Cisco Ios 12.1


BID - 4949

XF - cisco-ios-hsrp-loop-dos(9283)

BUGTRAQ - 20020606 Re: Three possible DoS attacks against some IOS versions.

BUGTRAQ - 20020605 Three possible DoS attacks against some IOS versions.

Last Updated: 27 May 2016 10:37:36