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Cisco Bug: CSCsz57920 - SSL: Crash with FE SSL test with an invalid rehandshake

Last Modified

Feb 06, 2017

Products (1)

  • Cisco ACE 4700 Series Application Control Engine Appliances

Known Affected Releases

3.0(0)A3(2.2.40)

Description (partial)

Symptom:
When configured for SSL termination, the ACE appliance may become unresponsive if it receives a large number of invalid rehandshake requests from a client. 

This condition can be identified by a large number of total tried connections in the SSL stats on the ACE appliance (on the order of 100,000 connections).

Conditions:
This occurs when the ACE appliance is configured to perform SSL termination and it receives invalid rehandshake requests from the client. The ACE appliance will send a fatal alert and close the connection, as expected. After these steps are repeated a certain number of times, however, the appliance will crash.
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Bug Details Include

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