Install fails citing GPG Error

[edrapac]

Steps to reproduce

How'd you do it?

1. Follow the documented steps to installing Metasploit on Linux

curl https://raw.githubusercontent.com/rapid7/metasploit-omnibus/master/config/templates/metasploit-framework-wrappers/msfupdate.erb > msfinstall && \
  chmod 755 msfinstall && \
  ./msfinstall

2. Receive the following error message

 curl https://raw.githubusercontent.com/rapid7/metasploit-omnibus/master/config/templates/metasploit-framework-wrappers/msfupdate.erb > msfinstall && chmod 755 msfinstall && sudo ./msfinstall
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100  6144  100  6144    0     0  33081      0 --:--:-- --:--:-- --:--:-- 33210
Adding metasploit-framework to your repository list..Updating package cache..W: GPG error: http://downloads.metasploit.com/data/releases/metasploit-framework/apt lucid InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY CDFB5FA52007B954
E: The repository 'http://downloads.metasploit.com/data/releases/metasploit-framework/apt lucid InRelease' is not signed.
OK
Checking for and installing update..
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
E: Unable to locate package metasploit-framework

Were you following a specific guide/tutorial or reading documentation?

If yes link the guide/tutorial or documentation you were following here, otherwise you may omit this section.
Yes, the metasploit official docs: https://docs.metasploit.com/docs/using-metasploit/getting-started/nightly-installers.html

Expected behavior

What should happen?
The installer should run successfully

Current behavior

What happens instead?
The installation fails, citing a GPG error

Metasploit version

N/A - I attempted this install on 10 - April - 2024 and 11 - April 2024

Running this on Ubuntu 22.04.4 LTS "jammy"

[nrathaus]

The error you are seeing seems related to you not doing things as expected, see this old issue:
#7336

It specifically talks about your gpg key issue (missing key)

[edrapac]

Hi @nrathaus Could you explain a bit more when you say I am not doing things as expected? As far as I understand it, the steps I outlined to reproduce are the steps outlined by the official documentation to install metasploit-framework

[nrathaus]

Can you verify that this: /usr/share/keyrings/metasploit-framework.gpg

Exists?

This is where the key is stored - it seems this step failed

[nrathaus]

We can close this one - there is no response from @edrapac

[adfoster-r7]

Maybe a regression introduced by rapid7/metasploit-omnibus#192