Module is unknown

[jankal]

I ran the installer script and verified the existence of pam_wsl_hello.so in /lib/x86_64-linux-gnu/security/. The file is there. Permissions all seem alright.

For debugging purposes, I added

auth       required   /lib/x86_64-linux-gnu/security/pam_wsl_hello.so

to /etc/pam.d/su.
Even with the absolute path, the same error occurs: su: Module is unknown

Output of uname -a:

Linux LAPTOP-RUJJI7SM 4.4.0-17134-Microsoft #345-Microsoft Wed Sep 19 17:47:00 PST 2018 x86_64 GNU/Linux

Windows version: 10.0.17134 Build 17134
MD5Sum:
8ee75aee1cc9531bafa689d8c12ac9e3 /lib/x86_64-linux-gnu/security/pam_wsl_hello.so

What am I missing here?

[thgeorgiou]

Hello! I've had the same problem on Fedora in WSL. It worked when I compiled pam_wsl_hello.so from source.

1. Install build dependencies: dnf install cargo pam-devel
2. Build only the PAM module make build/pam_wsl_hello.so
3. Copy to the correct directory: sudo cp build/pam_wsl_hello.so /usr/lib64/security/pam_wsl_hello.so
4. Add auth sufficient pam_wsl_hello.so to the top of /etc/pam.d/sudo.