Public bug reported:
An update to Vivid, Wily and Trusty appears to install a new security
demon called sssd. This adds itself to /etc/nsswitch.conf and alters
/etc/pam.d/common-account in such away that causes NIS user accounts to
be unable to login on a graphical console or via SSH.
When su is used to this user, the following message appears:
su: authentication service cannot retrieve authentication info (ignored)
An attempt to login with the correct password via ssh will result in a
very uninformative:
connection closed by xxx.xxx.xxx.xxx
In /var/log/auth.log, the following is recorded:
Nov 6 07:03:15 yakut lightdm: pam_succeed_if(lightdm:auth): requirement
"user ingroup nopasswdlogin" not met by user "user"
Nov 5 20:33:17 yakut lightdm: pam_succeed_if(lightdm:auth): requirement "user
ingroup nopasswdlogin" not met by user "user"
Nov 5 20:33:20 yakut lightdm: pam_unix(lightdm:auth): authentication failure;
logname= uid=0 euid=0 tty=:0 ruser= rhost= user=user
I could not block the installation of sssd using apt-mark because the
package is not yet installed. This means it will spread to other
clients when the next update is done.
** Affects: unity (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1514049
Title:
Update that installs SSSD breaks NIS user login
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