br> * Cisco 2503 with IOS 11.2(26a)
* Cisco 2503 with IOS 11.3(11b)
* Cisco 2503 with IOS 12.0(19)
Description:
ICMP redirect messages are used in IP networks to inform a sending device
about inefficient routing. Cisco IOS software stores redirect messages it
receives in memory for further consultation. They do not become part of
the normal routing table.
When generating ICMP redirect messages with random IP addresses in the
"offending packet" section of the ICMP frame, IOS will include this IP
address in its ICMP redirection table. In the vulnerable versions of IOS,
this table has no size limit. Later versions of IOS enforce a limit of
16000 redirects and therefore limit the amount of used memory to
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