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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


Description (partial)

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

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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