Updated libpq5 packages cause connection errors on postgresql 9.2

One of our servers is currently running on postgres 9.2 using the 9.2.9-1.pgdg70+1 packages from pgdg.

After an apt update this morning which brought in the libpq5 package version 9.4.0-1.pgdg70+1, connections to the
databasestarted failing with SSL errors logged on the server: 

   [unknown] [unknown] LOG:  could not accept SSL connection: digest too big for rsa key

Rolling back the server and client to libpq5 version 9.3.5-2.pgdg70+1 fixed it.

This is running on an otherwise up-to-date Debian Wheezy. The SSL certificate is locally issued using an internal CA
whichhas been added to the local trust store. SSL-related config options are left set to the defaults. 

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Chris Butler
Zedcore Systems Ltd

Telephone: 0114 303 0666
Direct dial: 0114 303 0572