OpenSSH maintenance update breaks GSSAPI login

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Environment

SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Desktop 15

Situation

After installation of the OpenSSH 7.6p1-9.3.1 maintenance update package, the SSH client will hang when trying a GSSAPI interactive login to a remote machine.

Resolution

An emergency update for OpenSSH that fixes this issue is being worked on. In the meantime, installing the previous version 7.6p1-7.8_9.3.1, for example with "zypper in --oldpackage openssh-7.6p1-7.8_9.3.1" can be used as a workaround. Alternatively, a PTF package with the fix may be requested from SUSE Linux Support.

Cause

An incomplete patch accidentally disables GSSAPI authentication of the client.

Additional Information

Disclaimer

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