Hi,
I have to say I'm particularly unfortunate with the rootcheck daemon...am I
the only one who keeps running into those problems?
On my manager I was checking against the system_audit_ssh.txt that checks
the sshd_config.
I first started with the following unresolved issues
[root@manager bin]# ./rootcheck_control -q -i 000
Policy and auditing events for local system 'manager - 127.0.0.1':
Outstanding events:
2016 Apr 02 18:31:43 (first time detected: 2016 Apr 02 18:31:43)
System Audit: System Audit: SSH Hardening - 5: Password Authentication {
PCI_DSS: 2.2.4}. File: /etc/ssh/sshd_config. Reference: 5 .
2016 Apr 02 18:31:43 (first time detected: 2016 Apr 02 18:31:43)
System Audit: System Audit: SSH Hardening - 7: Rhost or shost used for
authentication {PCI_DSS: 2.2.4}. File: /etc/ssh/sshd_config. Reference: 7 .
2016 Apr 02 18:31:43 (first time detected: 2016 Apr 02 18:31:43)
System Audit: System Audit: SSH Hardening - 8: Wrong Grace Time {PCI_DSS:
2.2.4}. File: /etc/ssh/sshd_config. Reference: 8 .
2016 Apr 02 18:31:43 (first time detected: 2016 Apr 02 18:31:43)
System Audit: System Audit: SSH Hardening - 9: Wrong Maximum number of
authentication attempts {PCI_DSS: 2.2.4}. File: /etc/ssh/sshd_config.
Reference: 9 .
So far, so good.
I set the correct values inside sshd_config, restarted the sshd service
and waited until the rootcheck run ran again... For the troubleshooting
sake I set the interval to 5 minutes.
But for some reason it didn't update the Outstanding events..... only
updated the time.
[root@manager bin]# ./rootcheck_control -q -i 000
Policy and auditing events for local system 'manager - 127.0.0.1':
Outstanding events:
2016 Apr 02 18:56:36 (first time detected: 2016 Apr 02 18:31:43)
System Audit: System Audit: SSH Hardening - 5: Password Authentication {
PCI_DSS: 2.2.4}. File: /etc/ssh/sshd_config. Reference: 5 .
2016 Apr 02 18:31:43 (first time detected: 2016 Apr 02 18:31:43)
System Audit: System Audit: SSH Hardening - 7: Rhost or shost used for
authentication {PCI_DSS: 2.2.4}. File: /etc/ssh/sshd_config. Reference: 7 .
2016 Apr 02 18:56:36 (first time detected: 2016 Apr 02 18:31:43)
System Audit: System Audit: SSH Hardening - 8: Wrong Grace Time {PCI_DSS:
2.2.4}. File: /etc/ssh/sshd_config. Reference: 8 .
2016 Apr 02 18:31:43 (first time detected: 2016 Apr 02 18:31:43)
System Audit: System Audit: SSH Hardening - 9: Wrong Maximum number of
authentication attempts {PCI_DSS: 2.2.4}. File: /etc/ssh/sshd_config.
Reference: 9 .
I checked the syntax of the system_audit_ssh.txt but this seemed good to me
For instance the MaxAuthTries has this syntax
# MaxAuthTries 3
# The MaxAuthTries parameter specifices the maximum number of
authentication attempts permitted per connection. Once the number of
failures reaches half this value, additional failures are logged.
# This should be set to 3.
[SSH Hardening - 9: Wrong Maximum number of authentication attempts {PCI_DSS
: 2.2.4}] [any] [9]
f:$sshd_file -> !r:^# && r:MaxAuthTries && !r:3\s*$;
f:$sshd_file -> r:^#\s*MaxAuthTries;
f:$sshd_file -> !r:MaxAuthTries;
my sshd_config has exact this value set "MaxAuthTries 3"
At the end I simply ran
[root@manager bin]# ./rootcheck_control -u 000
and waited for another rootcheck run.
Unfortunately it needed a full ossec restart, because simply running
returned nothing except an empty database
[root@manager bin]# ./rootcheck_control -L -i 000
Policy and auditing events for local system 'manager - 127.0.0.1':
Can someone maybe explain this behavior to me?
Why does it need an ossec restart, when a regular rootcheck run is not able
to update the Outstanding events successfully
or in other words:
Why is OSSEC not able to update the database even after it was flushed
using rootcheck_control - u 000
leaving the database empty until I restart OSSEC completely??
Maybe this is just another "Pebkac" error and me being just too stupid to
get it properly working...
anyway, I would love to hear your experiences with rootcheckd and
rootcheck_control
I'm using VERSION="v2.9.0" at the moment, pulled from github.
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