GithubRepo push to remote not work after upgade gitlab to 16.3.4

[Mascherus]

GithubRepo push to remote not work after upgade gitlab to 16.3.4

[Mascherus]

Fixed.
This problem only appears on Debian12 with libssh2-1 1.10.0-3
If you install the libssh package from Ubuntu (libssh2-1 1.11.0-2), everything works fine

[eoli3n]

This is not a fix, but a workaround, I face that same issue with debian12 - libssh2-1 1.10.0-3 and gitlab.

[rkerr]

I had a similar issue - there's quite a few variables here - gitlab can use OpenSSH or it's own built in ssh server depending on what you have configured, and there are lots of different key types you can use to authenticate for ssh.

What I found in my case was if oxidized is using an RSA key it was attempting to use the older ssh-rsa method (ie RSA with SHA1) but the gitlab end wouldn't accept that and only supports rsa-sha2-256 or rsa-sha2-512. OpenSSH deprecated ssh-rsa in version 8.8 so this should really be dependant on the OpenSSH version not the version of gitlab, but maybe you're running gitlab in a container and the gitlab update updated OpenSSH in the container? or maybe you're using gitlabs own ssh server (not the default).

I didn't dig too much further into what changed to break this. For me there was another easy work around - switching to an ED25519 key which is more secure than RSA anyway and doesn't have this issue.

Also see libssh2/libssh2#536 confirming libssh2 didn't add support for SHA2 with RSA until 1.11.0