Changing the default of ldap_tls_reqcert to anything but 'demand' is a
security vulnerability. Period.

Setting it to "allow" means that certificates for which you do not have
complete trust (i.e. self-signed or malicious certificates) are blindly
allowed to be used for the encrypted communication. This means that you
are highly vulnerable to a man-in-the-middle attack which could steal
passwords and user data.

I agree with Jakub. It looks to me like the issue is not in SSSD itself
but in one of its dependencies. I'd still prefer to see a complete
backtrace, though. I wish we had a complete core or 'bt full' to look
at.

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https://bugs.launchpad.net/bugs/957003

Title:
  sssd_be crashed with SIGABRT

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