CIS 5.5.2 Ensure system accounts are secured about content HOT 5 CLOSED

Hi @marcofortina , looks like this rule was changed in CIS v2.0.0 to not allow /bin/false:

5.4.2.7 Ensure system accounts do not have a valid login shell

That said, since we do not support CIS v2.0.0 yet, I think the best thing to do is to temporarily patch the OVAL for Ubuntu.

from content.

Version 0.1.72 does not report this error:

Title   Ensure that System Accounts Do Not Run a Shell Upon Login
Rule    xccdf_org.ssgproject.content_rule_no_shelllogin_for_systemaccounts
Result  pass

master branch (commit 59013f6):

Title   Ensure that System Accounts Do Not Run a Shell Upon Login
Rule    xccdf_org.ssgproject.content_rule_no_shelllogin_for_systemaccounts
Result  fail

It seams the issue was introduced after 0.1.72 release.

from content.

Last good commit c35978f:

Title   Ensure that System Accounts Do Not Run a Shell Upon Login
Rule    xccdf_org.ssgproject.content_rule_no_shelllogin_for_systemaccounts
Result  pass

From commit a936357:

Title   Ensure that System Accounts Do Not Run a Shell Upon Login
Rule    xccdf_org.ssgproject.content_rule_no_shelllogin_for_systemaccounts
Result  fail

from content.

PR #11896 broke pass result on Ubuntu 22.04

I agree on the usage of /usr/sbin/nologin instead of /bin/false, but only after all packages change their own users in /etc/passwd and only after changes are reported on official CIS guide. Right now OSCAP should validate what is on official guide:

5.5.2 Ensure system accounts are secured (Automated) - Page: 714:

Audit:

Run the following commands and verify no results are returned:

awk -F: '$1!~/(root|sync|shutdown|halt|^\+)/ && $3<'"$(awk '/^\s*UID_MIN/{print $2}' /etc/login.defs)"' && $7!~/((\/usr)?\/sbin\/nologin)/ && $7!~/(\/bin)?\/false/ {print}' /etc/passwd

awk -F: '($1!~/(root|^\+)/ && $3<'"$(awk '/^\s*UID_MIN/{print $2}' /etc/login.defs)"') {print $1}' /etc/passwd | xargs -I '{}' passwd -S '{}' | awk '($2!~/LK?/) {print $1}'

Here /bin/false is not reported as not secure.

My option is PR #11896 should be rollback and if needed for other kind of recommendations (eg STIG. PCI-DSS and so on) write a patch that is compliant with everyone and that does not create regressions with those indicated by CIS.

from content.

Same issue also on SLES15

from content.