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Merge pull request #52488 from flokli/pam_account_unix_required

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security.pam: make pam_unix.so required, not sufficient
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Florian Klink 2018-12-21 17:49:19 +01:00 committed by GitHub
commit 9c86e8faf5
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2 changed files with 17 additions and 1 deletions
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16
nixos/doc/manual/release-notes/rl-1903.xml
View File

@ -318,6 +318,22 @@
case.
</para>
</listitem>
<listitem>
<para>
The <literal>pam_unix</literal> account module is now loaded with its
control field set to <literal>required</literal> instead of
<literal>sufficient</literal>, so that later pam account modules that
might do more extensive checks are being executed.
Previously, the whole account module verification was exited prematurely
in case a nss module provided the account name to
<literal>pam_unix</literal>.
The LDAP and SSSD NixOS modules already add their NSS modules when
enabled. In case your setup breaks due to some later pam account module
previosuly shadowed, or failing NSS lookups, please file a bug. You can
get back the old behaviour by manually setting
<literal><![CDATA[security.pam.services.<name?>.text]]></literal>.
</para>
</listitem>
</itemizedlist>
</section>

2
nixos/modules/security/pam.nix
View File

@ -269,7 +269,7 @@ let
text = mkDefault
(''
# Account management.
account ${if cfg.sssdStrictAccess then "required" else "sufficient"} pam_unix.so
account required pam_unix.so
${optionalString use_ldap
"account sufficient ${pam_ldap}/lib/security/pam_ldap.so"}
${optionalString (config.services.sssd.enable && cfg.sssdStrictAccess==false)