Metasploit-framework: ssh_login_pubkey does not support ssh key

[mbloms]

Steps to reproduce

msf > use auxiliary/scanner/ssh/ssh_login_pubkey
msf auxiliary(scanner/ssh/ssh_login_pubkey) > set key_path /home/micke/.ssh/cuiteur
key_path => /home/micke/.ssh/cuiteur
msf auxiliary(scanner/ssh/ssh_login_pubkey) > set rhosts 10.0.6.235
rhosts => 10.0.6.235
msf auxiliary(scanner/ssh/ssh_login_pubkey) > set rport 52961
rport => 52961
msf auxiliary(scanner/ssh/ssh_login_pubkey) > set username root
username => root
msf auxiliary(scanner/ssh/ssh_login_pubkey) > run

[*] 10.0.6.235:52961 SSH - Testing Cleartext Keys
[*] Error: 10.0.6.235: NotImplementedError OpenSSH keys only supported if ED25519 is available
net-ssh requires the following gems for ed25519 support:
 * ed25519 (>= 1.2, < 2.0)
 * bcrypt_pbkdf (>= 1.0, < 2.0)
See https://github.com/net-ssh/net-ssh/issues/565 for more information
Gem::LoadError : "ed25519 is not part of the bundle. Add it to your Gemfile."

[*] Scanned 1 of 1 hosts (100% complete)
[*] Auxiliary module execution completed

I tried logging in with ssh after getting hold of the private key.

Expected behavior

I expected to get a ssh session.

Current behavior

I get an error complaining that ed25519 is missing.

System stuff

I tried this on kali linux and then on manjaro. Same behaviour on both. Installed with the official package manager in both cases.
I also tried to install ed25519, but I don't know anything about ruby, so that didn't help.

Metasploit version

4.17.5-dev on Manjaro
4.17.13-dev on Kali

[mbloms]

msf auxiliary(scanner/ssh/ssh_login_pubkey) > run

[*] 10.0.6.235:52961 SSH - Testing Cleartext Keys
[*] Error: 10.0.6.235: NotImplementedError OpenSSH keys only supported if ED25519 is available
net-ssh requires the following gems for ed25519 support:
 * ed25519 (>= 1.2, < 2.0)
 * bcrypt_pbkdf (>= 1.0, < 2.0)
See https://github.com/net-ssh/net-ssh/issues/565 for more information
Gem::LoadError : "ed25519 is not part of the bundle. Add it to your Gemfile."

[*] Scanned 1 of 1 hosts (100% complete)
[*] Auxiliary module execution completed
msf auxiliary(scanner/ssh/ssh_login_pubkey) > version
Framework: 4.17.14-dev
Console  : 4.17.14-dev

Tried updating to latest release, same result.

[AndreasBrommund]

I also experience the same issue

[wvu-r7]

We have ~neither of those gems~ bcrypt_pbkdf but not ed25519. We should add ~them~ it.

[wvu-r7]

msf5 auxiliary(scanner/ssh/ssh_login_pubkey) > run

[*] [redacted]:22 SSH - Testing Cleartext Keys
[*] Error: [redacted]: NotImplementedError OpenSSH keys only supported if ED25519 is available
net-ssh requires the following gems for ed25519 support:
 * ed25519 (>= 1.2, < 2.0)
 * bcrypt_pbkdf (>= 1.0, < 2.0)
See https://github.com/net-ssh/net-ssh/issues/565 for more information
Gem::LoadError : "ed25519 is not part of the bundle. Add it to your Gemfile."

[*] Scanned 1 of 1 hosts (100% complete)
[*] Auxiliary module execution completed
msf5 auxiliary(scanner/ssh/ssh_login_pubkey) >

wvu@kharak:~/metasploit-framework:master$ bundle list | grep -e ed25519 -e bcrypt_pbkdf
  * bcrypt_pbkdf (1.0.0)
wvu@kharak:~/metasploit-framework:master$

[wvu-r7]

I've pushed a fix referenced above. Once that merges, it should work. In the meantime, you may apply the patch manually.