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Home » Hacking News » Cisco IOS Router Scan Software Reloading Vulnerability

Cisco IOS Router Scan Software Reloading Vulnerability

by platon on June 2nd, 2001 Cisco IOS is the firmware Operating System designed for use on various Cisco hardware. It is maintained by Cisco systems...



A problem in IOS makes it possible to cause an arbitrary reload of the operating system. By initiating a TCP scan against a piece of Cisco hardware 3100-3999, 5100-5999,
7100-7999, and 10100-10999, the router becomes unstable and suffers memory corruption. Upon the next attempt to access the configuration, the router will unexpectedly reload the configuration.

This problem makes it possible for a remote user to cause an arbitrary reload of the router configuration, and potentially deny service to network assets.

There are upgrades available at: http://www.cisco.com

This vulnerability was announced to Bugtraq in a Cisco Security Advisory on May 24, 2001.

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