3.2.2.1: Unix: Difference between revisions

From HORSE - Holistic Operational Readiness Security Evaluation.
Jump to navigation Jump to search
No edit summary
No edit summary
 
(5 intermediate revisions by the same user not shown)
Line 1: Line 1:
<blockquote style="background: #C8CDC7; padding: 1em; margin-left: 0.5em;">
<blockquote style="background: #C8CDC7; padding: 1em; margin-left: 0.5em;">
'''7. Risk: Unidentifiable users may compromise critical business processes and data.'''<br>
'''1 Risk: Unauthorized access attempts go unnoticed.'''<br>
:a. SOX.4.2.1.7: The UNIX system will not allow identical administrator IDs.<br>
:a. [[SOX.4.2.1.1:|'''SOX.4.2.1.1''']] UNIX authentication attempts are limited to attempts specified by the Corporate IT standard.<br>
</blockquote>
</blockquote>


'''Testing Procedures'''
<blockquote style="background: white; border: 1px solid black; padding: 1em;">
Obtain a copy of the user control file from the system and verify that there are no duplicate system accounts.<br>


An example of this might be one of the following:<br>
<blockquote style="background: #C8CDC7; padding: 1em; margin-left: 0.5em;">
'''2. Risk: Unauthorized execution of privileged system commands may disrupt business processes, and corrupt critical business data stores.'''<br>
:a. [[SOX.4.2.1.2:|'''SOX.4.2.1.2''']] UNIX administrator level access is password restricted and is limited to the designated UNIX administrators only.<br>
</blockquote>


*Solaris Unix: etc/passwd<br>
 
*AIX Unix: etc/passwd<br>
<blockquote style="background: #C8CDC7; padding: 1em; margin-left: 0.5em;">
*Linux Unix: etc/passwd<br>
'''3. Risk: Unscheduled access by support vendors may result in business process interruptions or loss of production data.'''<br>
<br>
:a. [[SOX.4.2.1.3:|'''SOX.4.2.1.3''']] UNIX access by support vendors is granted through a service request.<br>
</blockquote>
</blockquote>


'''Testing Frequency'''
<blockquote style="background: white; border: 1px solid black; padding: 1em;">
Quarterly validation of all systems within scope.
<br>
</blockquote>


'''Evidence Archive Location'''
<blockquote style="background: #C8CDC7; padding: 1em; margin-left: 0.5em;">
<blockquote style="background: white; border: 1px solid black; padding: 1em;">
'''4. Risk: Unauthorized users might exploit privileged access to critical business processes and data.'''<br>
Insert hyperlink or location of evidence archive.
:a. [[SOX.4.2.1.4:|'''SOX.4.2.1.4''']] New UNIX user accounts are pre-expired.<br>
<br>
</blockquote>
</blockquote>


'''Control Stewards Process Narrative'''
<blockquote style="background: white; border: 1px solid black; padding: 1em;">
<p><font color=#008000>The AIX operating system prevents the addition of duplicate Ids. Furthermore, the regular review of administrator IDs listed above serves as a backstop for this control.</font></p>


<br>
<blockquote style="background: #C8CDC7; padding: 1em; margin-left: 0.5em;">
'''Control Steward – Steve Somebody'''
'''5. Risk: Unauthorized users might exploit unauthorized access to critical business processes and data.'''<br>
<br>
:a. [[SOX.4.2.1.5:|'''SOX.4.2.1.5''']] The UNIX operating application has a session "Time-Out" function enabled.<br>
</blockquote>
</blockquote>


'''Process Illustration'''
<blockquote style="background: white; border: 1px solid black; padding: 1em;">
Replace this test by inserting a process diagram, flowchart or other visual representation to illustrate the process narrative as necessary. Include a brief description of the process illustration.
<br>
</blockquote>


'''Control Status and Auditors Commentary'''
<blockquote style="background: #C8CDC7; padding: 1em; margin-left: 0.5em;">
<blockquote style="background: white; border: 1px solid black; padding: 1em;">
'''6. Risk: Unnecessary disruptions to business processes or data corruption may occur.'''<br>
<p><font color=#008000>The control is effective. It is technically impossible to establish identical user accounts on a UNIX operating system.</font></p>
:a. [[SOX.4.2.1.6:|'''SOX.4.2.1.6''']] UNIX rule changes are scheduled during maintenance windows.<br>
<br>
[[Image:greenlock.jpg]]<br>
<br>
Status is acceptable.
<br>
</blockquote>
</blockquote>


'''Control Exception Commentary'''
<blockquote style="background: white; border: 1px solid black; padding: 1em;">
Status is acceptable.
<br>
</blockquote>


'''Remediation Plan'''
<blockquote style="background: #C8CDC7; padding: 1em; margin-left: 0.5em;">
<blockquote style="background: white; border: 1px solid black; padding: 1em;">
'''7. Risk: Unidentifiable users may compromise critical business processes and data.'''<br>
Remediation is not required at this time.
:a. [[SOX.4.2.1.7:|'''SOX.4.2.1.7''']] The UNIX system will not allow identical administrator IDs.<br>
<br>
</blockquote>
</blockquote>


Line 68: Line 43:
<blockquote style="background: #C8CDC7; padding: 1em; margin-left: 0.5em;">
<blockquote style="background: #C8CDC7; padding: 1em; margin-left: 0.5em;">
'''8. Risk: Insufficient security standards may allow unauthorized access to production systems and business data stores.'''<br>
'''8. Risk: Insufficient security standards may allow unauthorized access to production systems and business data stores.'''<br>
:a. SOX.4.2.1.8: UNIX passwords are required for each system ID. Password configuration is based on Corporate IT standards.<br>
:a. [[SOX.4.2.1.8:|'''SOX.4.2.1.8''']] UNIX passwords are required for each system ID. Password configuration is based on Corporate IT standards.<br>
</blockquote>
</blockquote>


'''Testing Procedures'''
<blockquote style="background: white; border: 1px solid black; padding: 1em;">
Obtain a copy of the configuration file enforcing the password parameters as defined by the corporate policy document: '''Technical Standard – Access Controls.'''<br>


An example of this might be one of the following:<br>
<blockquote style="background: #C8CDC7; padding: 1em; margin-left: 0.5em;">
'''9. Risk: Inappropriate administrative actions are executed without accountability measures.'''<br>
:a. [[SOX.4.2.1.9:|'''SOX.4.2.1.9''']] The UNIX operating system application has forensic auditing enabled to enable the monitoring of administrative access related events.<br>
</blockquote>


*Solaris Unix: etc/default/passwd<br>
*AIX Unix: etc/security/user<br>
*Linux Unix: etc/login.defs<br>


<br>
<blockquote style="background: #C8CDC7; padding: 1em; margin-left: 0.5em;">
'''10. Risk: Reactive security monitoring results in data compromise and financial loss or liability.'''<br>
:a. [[SOX.4.2.1.10:|'''SOX.4.2.1.10''']] UNIX administration team is notified when security violations occur.<br>
</blockquote>
</blockquote>


'''Testing Frequency'''
<blockquote style="background: white; border: 1px solid black; padding: 1em;">
Quarterly validation of all systems within scope.
<br>
</blockquote>


'''Evidence Archive Location'''
<blockquote style="background: #C8CDC7; padding: 1em; margin-left: 0.5em;">
<blockquote style="background: white; border: 1px solid black; padding: 1em;">
'''11. Risk: Forensic evidence is not available to resolve malfunctions, compromises or other security compromising incidents.'''<br>
Insert hyperlink or location of evidence archive.
:a. [[SOX.4.2.1.11:|'''SOX.4.2.1.11''']] The UNIX administration team reviews security logs looking for security violations.<br>
<br>
</blockquote>
</blockquote>


'''Control Stewards Process Narrative'''
<blockquote style="background: white; border: 1px solid black; padding: 1em;">
<p><font color=#008000>Passwords on all platforms adhere to the corporate policy document: '''Technical Standard – Access Controls.'''<br>
The password complexity standards include the following:<br>


*Password Length: 8 characters.<br>
<blockquote style="background: #C8CDC7; padding: 1em; margin-left: 0.5em;">
'''12. Risk: Unauthorized access is granted to business systems or data stores.'''<br>
:a. [[SOX.4.2.1.12:|'''SOX.4.2.1.12''']] UNIX access is granted through a service request.<br>
</blockquote>


*Password Complexity: At least one each of alpha (a - z), numeric (0 - 9) and special characters (#, $ and @).<br>


*Passwords may not be reused again for nine months.<br>
<blockquote style="background: #C8CDC7; padding: 1em; margin-left: 0.5em;">
 
'''13. Risk: Unauthorized access may occur resulting in business data compromise or destruction.'''<br>
*Password must be changed every thirteen weeks.<br>
:a. [[SOX.4.2.1.13:|'''SOX.4.2.1.13''']] Terminations are sent through the HR process. An Email is sent from HR with all terminations to the UNIX system administrators.<br>
 
'''Control Steward – Pat Manager'''
<br>
</blockquote>
</blockquote>


'''Process Illustration'''
<blockquote style="background: white; border: 1px solid black; padding: 1em;">
Replace this test by inserting a process diagram, flowchart or other visual representation to illustrate the process narrative as necessary. Include a brief description of the process illustration.
<br>
</blockquote>


'''Control Status and Auditors Commentary'''
<blockquote style="background: #C8CDC7; padding: 1em; margin-left: 0.5em;">
<blockquote style="background: white; border: 1px solid black; padding: 1em;">
'''14. Risk: Insufficient security standards may allow unauthorized access to production systems and business data stores.'''<br>
<p><font color=#008000>The control is effective at this time because the appropriate password parameters are automatically enforced and they meet or exceed corporate information technology password standards.</font></p>
:a. [[SOX.4.2.1.14:|'''SOX.4.2.1.14''']] UNIX password expiration is set to Corporate IT standards.<br>
<br>
[[Image:greenlock.jpg]]<br>
<br>
Continued ongoing random sample testing of all UNIX systems on a quarterly basis is advised.
<br>
</blockquote>
</blockquote>


'''Control Exception Commentary'''
<blockquote style="background: white; border: 1px solid black; padding: 1em;">
Status acceptable. Control exceptions do not exist at this time.
<br>
</blockquote>


'''Remediation Plan'''
<blockquote style="background: #C8CDC7; padding: 1em; margin-left: 0.5em;">
<blockquote style="background: white; border: 1px solid black; padding: 1em;">
'''15. Risk: Security violations or data corruption may occur with no forensic evidence available to resolve the situation.'''<br>
Status acceptable. Remediation not required at this time.
:a. [[SOX.4.2.1.15:|'''SOX.4.2.1.15''']] UNIX rules and logging is applied to everyone equally including system administrators.<br>
<br>
</blockquote>
</blockquote>




<blockquote style="background: #C8CDC7; padding: 1em; margin-left: 0.5em;">
<blockquote style="background: #C8CDC7; padding: 1em; margin-left: 0.5em;">
'''9. Risk: Inappropriate administrative actions are executed without accountability measures.'''<br>
'''16. Risk: Unauthorized access (i.e. terminated employees) may occur.'''<br>
:a. SOX.4.2.1.9: The UNIX operating system application has forensic auditing enabled to enable the monitoring of administrative access related events.<br>
:a. [[SOX.4.2.1.16:|'''SOX.4.2.1.16''']] A semi-annual revalidation of UNIX administrator accounts are performed by security administration.<br>
</blockquote>
</blockquote>


'''Testing Procedures'''
<blockquote style="background: white; border: 1px solid black; padding: 1em;">
Obtain a copy of an automatic notification message produced by the system being tested to verify that the security administrators are being proactively notified of possible access violations.<br>


An example might be a monitoring background process that sends an electronic message to the security administrative group automatically when root access occurs. The email message will provide a date, time, source, destination, and responsible entity to satisfy compliance requirements.<br>
<blockquote style="background: #C8CDC7; padding: 1em; margin-left: 0.5em;">
<br>
'''17. Risk: Unauthorized execution of privileged system commands may disrupt business processes, and corrupt critical business data stores.'''<br>
:a. [[SOX.4.2.1.17:|'''SOX.4.2.1.17''']] Root level access is password restricted. This password is know only by system the administrators.<br>
</blockquote>
</blockquote>


'''Testing Frequency'''
<blockquote style="background: white; border: 1px solid black; padding: 1em;">
Semi- Annual validation of all systems within scope.
<br>
</blockquote>


'''Evidence Archive Location'''
<blockquote style="background: #C8CDC7; padding: 1em; margin-left: 0.5em;">
<blockquote style="background: white; border: 1px solid black; padding: 1em;">
'''18. Risk: Unauthorized users could elevate their access to privileged file systems.'''<br>
Insert hyperlink or location of evidence archive.
:a. [[SOX.4.2.1.18:|'''SOX.4.2.1.18''']] The /etc/default/login UMASK 027 parameter is enabled.<br>
<br>
</blockquote>
</blockquote>


'''Control Stewards Process Narrative'''
<blockquote style="background: white; border: 1px solid black; padding: 1em;">
<p><font color=#FF0000>Currently, no active notification of security violations occurs. If there is suspicion of activity, IT Security would work with the Systems Software group to access to security logs on each AIX host.</font></p>


<br>
<blockquote style="background: #C8CDC7; padding: 1em; margin-left: 0.5em;">
'''Control Steward – Steve Somebody'''
'''19. Risk: Unauthorized personnel gain access to the application through remote access.'''<br>
<br>
:a. [[SOX.4.2.1.19:|'''SOX.4.2.1.19''']] The /etc/default/login CONSOLE parameter is enabled.<br>
</blockquote>
</blockquote>


'''Process Illustration'''
<blockquote style="background: white; border: 1px solid black; padding: 1em;">
Replace this test by inserting a process diagram, flowchart or other visual representation to illustrate the process narrative as necessary. Include a brief description of the process illustration.
<br>
</blockquote>


'''Control Status and Auditors Commentary'''
<blockquote style="background: #C8CDC7; padding: 1em; margin-left: 0.5em;">
<blockquote style="background: white; border: 1px solid black; padding: 1em;">
[[Image:Key-control.jpg]]<br>
<p><font color=#FF0000>The control is not effective at this time because automatic system alerts are not being generated to provide effective proactive security event alerts to the security administrators.</font></p>
<br>
[[Image:redlock.jpg]]<br>
<br>
Creating simple monitoring shell scripts or implementing a commercial solution is advised.
<br>
</blockquote>
 
'''Control Exception Commentary'''
<blockquote style="background: white; border: 1px solid black; padding: 1em;">
Status in not acceptable.
<br>
<br>
'''20. Risk: Controls provide reasonable assurance that the systems are appropriately tested and validated prior to being placed into production processes, and associated controls operate as intended and support financial reporting requirements.'''<br>
:a. [[SOX.5.4:|'''SOX.5.4''']] A testing strategy is developed and followed for all significant changes in applications and infrastructure technology, which addresses unit, system, integration and user-acceptance-level testing so that deployed systems operate as intended.<br>
</blockquote>
</blockquote>


'''Remediation Plan'''
--[[User:Mdpeters|Mdpeters]] 09:44, 23 June 2006 (EDT)
<blockquote style="background: white; border: 1px solid black; padding: 1em;">
Implement a CRON driven shell script to monitor activity logs. Alert activity should be proactively forwarded to security administrators as these events occur ideally through electronic mail. The security administrator should investigate suspect activities and document any findings. This action report should be archived for compliance testing purposes.
 
<br>
</blockquote>

Latest revision as of 13:44, 23 June 2006

1 Risk: Unauthorized access attempts go unnoticed.

a. SOX.4.2.1.1 UNIX authentication attempts are limited to attempts specified by the Corporate IT standard.


2. Risk: Unauthorized execution of privileged system commands may disrupt business processes, and corrupt critical business data stores.

a. SOX.4.2.1.2 UNIX administrator level access is password restricted and is limited to the designated UNIX administrators only.


3. Risk: Unscheduled access by support vendors may result in business process interruptions or loss of production data.

a. SOX.4.2.1.3 UNIX access by support vendors is granted through a service request.


4. Risk: Unauthorized users might exploit privileged access to critical business processes and data.

a. SOX.4.2.1.4 New UNIX user accounts are pre-expired.


5. Risk: Unauthorized users might exploit unauthorized access to critical business processes and data.

a. SOX.4.2.1.5 The UNIX operating application has a session "Time-Out" function enabled.


6. Risk: Unnecessary disruptions to business processes or data corruption may occur.

a. SOX.4.2.1.6 UNIX rule changes are scheduled during maintenance windows.


7. Risk: Unidentifiable users may compromise critical business processes and data.

a. SOX.4.2.1.7 The UNIX system will not allow identical administrator IDs.


8. Risk: Insufficient security standards may allow unauthorized access to production systems and business data stores.

a. SOX.4.2.1.8 UNIX passwords are required for each system ID. Password configuration is based on Corporate IT standards.


9. Risk: Inappropriate administrative actions are executed without accountability measures.

a. SOX.4.2.1.9 The UNIX operating system application has forensic auditing enabled to enable the monitoring of administrative access related events.


10. Risk: Reactive security monitoring results in data compromise and financial loss or liability.

a. SOX.4.2.1.10 UNIX administration team is notified when security violations occur.


11. Risk: Forensic evidence is not available to resolve malfunctions, compromises or other security compromising incidents.

a. SOX.4.2.1.11 The UNIX administration team reviews security logs looking for security violations.


12. Risk: Unauthorized access is granted to business systems or data stores.

a. SOX.4.2.1.12 UNIX access is granted through a service request.


13. Risk: Unauthorized access may occur resulting in business data compromise or destruction.

a. SOX.4.2.1.13 Terminations are sent through the HR process. An Email is sent from HR with all terminations to the UNIX system administrators.


14. Risk: Insufficient security standards may allow unauthorized access to production systems and business data stores.

a. SOX.4.2.1.14 UNIX password expiration is set to Corporate IT standards.


15. Risk: Security violations or data corruption may occur with no forensic evidence available to resolve the situation.

a. SOX.4.2.1.15 UNIX rules and logging is applied to everyone equally including system administrators.


16. Risk: Unauthorized access (i.e. terminated employees) may occur.

a. SOX.4.2.1.16 A semi-annual revalidation of UNIX administrator accounts are performed by security administration.


17. Risk: Unauthorized execution of privileged system commands may disrupt business processes, and corrupt critical business data stores.

a. SOX.4.2.1.17 Root level access is password restricted. This password is know only by system the administrators.


18. Risk: Unauthorized users could elevate their access to privileged file systems.

a. SOX.4.2.1.18 The /etc/default/login UMASK 027 parameter is enabled.


19. Risk: Unauthorized personnel gain access to the application through remote access.

a. SOX.4.2.1.19 The /etc/default/login CONSOLE parameter is enabled.




20. Risk: Controls provide reasonable assurance that the systems are appropriately tested and validated prior to being placed into production processes, and associated controls operate as intended and support financial reporting requirements.

a. SOX.5.4 A testing strategy is developed and followed for all significant changes in applications and infrastructure technology, which addresses unit, system, integration and user-acceptance-level testing so that deployed systems operate as intended.

--Mdpeters 09:44, 23 June 2006 (EDT)

Retrieved from "http://horseproject.wiki/index.php?title=3.2.2.1:_Unix&oldid=2049"