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Cisco Bug: CSCuo93850 - ASA 80 Byte Block leak impacting HTTPS connections

Last Modified

Feb 23, 2018

Products (1)

  • Cisco ASA 5500-X Series Firewalls

Known Affected Releases

9.0(4)

Description (partial)

Symptom:
Inability to manage the ASA with ASDM. They also have problem with users trying to connect with AnyConnect.

SVC and ASDM failed to connect. 

We would see a connection get established but after about 30 seconds it would be terminated by a FIN from the ASA itself sent towards the client.

"show processes" no longer lists out "emweb/https" because this process has crashed

Conditions:
Customer running 9.0(4)5
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