R-246: Multiple Vulnerabilities in Cisco IOS while Processing SSL Packets

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12-24-2007

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R-246: Multiple Vulnerabilities in Cisco IOS while Processing SSL Packets

Cisco IOS device may crash while processing malformed Secure Sockets Layer (SSL) packets. The risk is LOW. Successful exploitation of any vulnerability listed in this advisory may result in the crash of the affected device.

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aggregate-ios

AGGREGATE-IOS(1)                                              General Commands Manual                                             AGGREGATE-IOS(1)

NAME

       aggregate-ios - optimise a concatenated set of cisco/IOS prefix filters to help make them nice and short.

SYNOPSIS

       aggregate-ios <source_config >optimised_config

DESCRIPTION

       Takes  cisco IOS configuration on stdin, and optimises any prefix filters found using aggregate(1).  Optimised filters are produced on std-
       out.

OPTIONS

       None.

DIAGNOSTICS

       Any diagnostics produced by aggregate(1) are passed through on stderr.

EXAMPLES

       The following configuration fragment:

         ip prefix-list AS65530 description Foo, Inc
         ip prefix-list AS65530 permit 10.1.0.0/16
         ip prefix-list AS65530 permit 10.2.0.0/16
         ip prefix-list AS65530 permit 10.2.1.0/24
         ip prefix-list AS65530 permit 10.3.0.0/16
         ip prefix-list AS65531 description Bar.Com
         ip prefix-list AS65531 seq 5 permit 192.168.1.0/24
         ip prefix-list AS65531 seq 10 permit 192.168.2.0/24
         ip prefix-list AS65531 seq 15 permit 192.168.0.0/19

       is optimised as follows:

         ip prefix-list AS65530 permit 10.1.0.0/16 le 24
         ip prefix-list AS65530 permit 10.2.0.0/15 le 24
         ip prefix-list AS65531 permit 192.168.0.0/19 le 24

SEE ALSO

       aggregate(1)

HISTORY

       Aggregate-ios was written by Joe Abley <jabley@mfnx.net>.

BUGS

       All those in aggregate(1) and then some :)

Joe Abley                                                        2000 November 27                                                 AGGREGATE-IOS(1)

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