Cisco Bug: CSCsz26513 - TCP segment trim to right window edge causing ssl alerts
Feb 22, 2014
- Cisco ACE Application Control Engine Module
Known Affected Releases
Symptom: The customer is using a home-grown application that rides on HTTPS and terminates on the ACE module, then is sent in clear-text to a backend server. When transferring large file the ACE sends an encrypted alert to the client. Just prior to this, it reduces its TCP window to zero, then bumps it up, and after it gets the packet that it was ACK'ing for from the client, it sends the encrypted alert. Conditions: The network is losey with duplicate packets, retransmission and long delays.
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Bug Details Include
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