Preview Tool

Cisco Bug: CSCuj78416 - ASA SSH v2 stops working after upgrading from 7.2 to 8.2

Last Modified

Oct 01, 2020

Products (1)

  • Cisco ASA 5500-X Series Firewalls

Known Affected Releases


Description (partial)

SSH version 2 stops working after upgrading an Adaptive Security Appliance(ASA).

ASA was previously running 7.2.x software and then was upgraded to 8.2.x.

In the "debug ssh 255" output the last error messages seen are 

SSH2 0: ssh_receive: 0 bytes receivedSSH0: receive SSH message: [no message ID: variable *data is NULL]


SSH2 0: Unexpected mesg type receivedSSH0: Session disconnected by SSH server - error 0x00 "Internal error"
Bug details contain sensitive information and therefore require a account to be viewed.

Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
  • Number of Related Support Cases
Bug information is viewable for customers and partners who have a service contract. Registered users can view up to 200 bugs per month without a service contract.