Multiple vulnerabilities in Cisco IOS SSL implementation

Published: 2007-05-22
Last Updated: 2007-05-22 21:38:07 UTC
by Bojan Zdrnja (Version: 1)
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Cisco published an advisory about multiple vulnerabilities in their IOS SSL implementation (
Several SSL messages (ClientHello, ChangeCipherSpec and Finished), when malformed, can cause Cisco IOS devices to crash.

Cisco said that this is only a DoS attack (no code execution seems to be possible) but as there are a lot of affected devices you should either install the patch or follow the workarounds (which are to disable the affected service(s)).

Thanks to Marc, CJ and Jim.
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