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Cisco Bug: CSCul94773 - ASA TCP Proxy can corrupt data, cause ACK storms and session hangs

Last Modified

Apr 16, 2020

Products (1)

  • Cisco ASA 5500-X Series Firewalls

Known Affected Releases

9.1(3)

Description (partial)

Symptom:
ASA TCP Proxy code is not optimal and can cause various issues, such as excessive retransmissions, ACK storms, hangs and data corruption.

Conditions:
This is a very rare occurrence, although some decrease in transmission speed is expected with the current implementation.
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  • Status
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