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Cisco NXOS: decrypt "password 3"-encryption used for BGP

r.heitmann
Level 1
Level 1

Those passwords are stored in encrypted format in the configuration.

https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus9000/sw/9-x/unicast/configuration/guide/l3_cli_nxos/l3_advbgp.html#63308 

but the NXOS-Switch obviously

  • can decrypt them

since it

  • needs the cleartext-password to do the BGP/MD5-Hash

during Session establishment - so this encryption is reversible somehow.

For "Type 6"-(AES-)encrypted passwords an interactive command to display the original password exists.

Does anybody have an idea how to recover those 3DES-encrypted "password 3" BGP-Passwords?

 

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