PuTTY bug gssapi-kfw-crash

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summary: GSSAPI with MIT Kerberos-for-Windows or third-party DLL crashes
class: bug: This is clearly an actual problem we want fixed.
difficulty: fun: Just needs tuits, and not many of them.
priority: high: This should be fixed in the next release.
absent-in: 0.70
present-in: d515e4f1a34b4122195b113ba42ad1c4d2de9085 0.71
fixed-in: 142427afaedd6bbf5a0f409d993c67b7b4b08b75

Attempting to use GSSAPI authentication with MIT Kerberos-for-Windows, or a third-party GSSAPI Windows DLL, would cause PuTTY to crash early in an SSH connection.

Since GSSAPI authentication and key exchange are enabled by default, the mere presence of MIT Kerberos is usually sufficient to cause affected versions of PuTTY to crash.

This bug can be worked around by disabling both of the "Attempt GSSAPI" options on the Connection / SSH / Auth / GSSAPI tab in the PuTTY configuration.

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Audit trail for this bug.
(last revision of this bug record was at 2019-03-22 00:57:23 +0000)