scap-security-guide Digest, Vol 25, Issue 74

Saxon, William G CIV SPAWARSYSCEN-ATLANTIC, 58810 bill.saxon at navy.mil
Wed Sep 25 14:40:39 UTC 2013


The CTO to which David is referring is 10-17 (28 July 2010) which mandates that HBSS be deployed on all Linux and Unix systems.

I asked DISA about the HBSS/SELinux conflict and this was their reply:

"SELinux is not compatible with HBSS...you can either use SELinux as is and submit a waiver to Cybercom, disable the SE features and install the required point product(s) (if possible), or migrate to a different OS."

When I contacted the HBSS office to find out how to get a waiver, they told me that a waiver was not necessary and that there was a "verbal understanding" between Cybercom and HBSS to give *nix systems flexibility in their configuration until the HBSS/SELinux conflict is resolved which is why Brain's system made it through IV&V.  

Granted, informal "understandings" within the DoD make me nervous but that is where we are in right now.  So what's the best way to articulate this within a STIG?  Beats me.  I suggest the following for group discussion:

============================
Group ID (Vulid): V-38667
Group Title: SRG-OS-000196
Rule ID: SV-50468r1_rule
Severity: CAT II
Rule Version (STIG-ID): RHEL-06-000285 Rule Title: The system must have a host-based intrusion detection tool and/or a host-based intrusion prevention tool installed.

Vulnerability Discussion: Adding host-based intrusion detection tools can provide the capability to automatically take actions in response to malicious behavior, which can provide additional agility in reacting to network threats. These tools also often include a reporting capability to provide network awareness of the system, which may not otherwise exist in an organization's systems management regime.  For DoD systems, the McAfee Host-based Security System (HBSS) is provided to fulfill this role. Adding host-based intrusion prevention tools increases system security by confining privileged programs and user sessions.  SELinux is provided to fulfill this role.  At this time, HBSS and SELinux are not compatible.  

Check Content:
Inspect the system to determine if intrusion detection software or intrusion prevention software has been installed. Verify the installed software is active.
If neither a host-based intrusion detection tool (For DoD systems, this is HBSS) nor a host-based intrusion prevention tool (SELinux) is installed, this is a finding.

Fix Text: Install either a host-based intrusion detection tool (For DoD systems, install HBSS) or a host-based intrusion prevention tool (SELinux).
========================

William G. (Bill) Saxon, CISSP, GSLC, VIP, Security+, Network+, Master and B.S. CpE, B.S. PHY
CSWF IAM2/IAT2

-----Original Message-----
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Today's Topics:

   1. RE: RHEL5 vs RHEL6 language on HBSS (Moessbauer, David)
   2. Re: RHEL5 vs RHEL6 language on HBSS (Brian Peake)


----------------------------------------------------------------------

Message: 1
Date: Tue, 24 Sep 2013 16:35:29 -0400
From: "Moessbauer, David" <david.moessbauer at progeny.net>
To: "scap-security-guide at lists.fedorahosted.org"
	<scap-security-guide at lists.fedorahosted.org>
Subject: RE: RHEL5 vs RHEL6 language on HBSS
Message-ID:
	<6BC30DD8322F394CB35455E71037B2F61252B95A58 at ES2K7-MBX-1.progeny.net>
Content-Type: text/plain; charset="utf-8"

I am not sure about your comment regarding "[HBSS] isn't *mandated.*"

My experience with the fleet tells me otherwise, as both ODAA during accreditation and deployed platforms are requiring compliance with HBSS of our system.  Additionally, I do believe I have seen a CTO distributed by the Navy that states otherwise, though I can't seem to put my hands on it at the moment.  

Please advise if I am incorrect in this belief.


v/r
 
David Moessbauer
(410) 627-5633 (M)
 
The Information contained in or attached to this communication may be confidential and privileged proprietary intended only for the individual/s or entity to whom/which it is addressed. Any unauthorized use, distribution, copying or disclosure of this information is strictly prohibited. If you have received this communication in error please contact the sender immediately and delete from your system.


-----Original Message-----
From: scap-security-guide-bounces at lists.fedorahosted.org [mailto:scap-security-guide-bounces at lists.fedorahosted.org] On Behalf Of Truhn, Chad M CTR NSWCDD, CXA30
Sent: Tuesday, September 24, 2013 4:12 PM
To: scap-security-guide at lists.fedorahosted.org
Subject: (nwl) RE: RHEL5 vs RHEL6 language on HBSS

Shawn,

Reverting back to an email you sent to gov-sec back in June (attached), you said:

" So, even though you've configured your system with all these auditing rules, configured AIDE for integrity checking, *and* have SELinux enforcing, FSO wants you to layer on an *additional* level of host intrusion detection which can provide "complementary or duplicative monitoring, reporting, and reaction capabilities." 

As stated in the STIG, DoD provides McAfee HBSS to perform this function. But it isn't *mandated.*"


Then in ticket #262 from the SSG page:

"HIPS is a category of technology, and while McAfee? is commonly used to meet this, is not tied to a particular product/vendor. Users would be wise to select technology which is certified to run on RHEL6 without disabling key OS level protection mechanisms (e.g., if McAfee? breaks your system, use something else)." [1]

" MPO/FSO/RH: 3rd party products should work with the operating systems they run on, without forcing users to disable security mechanisms. Won't fix."




I have always been confused about this language.  Do we want SELinux enabled *AND* HIPS installed?  Or should it be an *OR*?  One says McAfee HBSS/HIPS is fine, another says it isn't.  I'm confused!!!


[1] https://fedorahosted.org/scap-security-guide/ticket/262




-----Original Message-----
From: scap-security-guide-bounces at lists.fedorahosted.org [mailto:scap-security-guide-bounces at lists.fedorahosted.org] On Behalf Of Shawn Wells
Sent: Tuesday, September 24, 2013 3:21 PM
To: scap-security-guide at lists.fedorahosted.org
Subject: RHEL5 vs RHEL6 language on HBSS

I received the following note from a colleague today, outlining the wording changes between RHEL5 and RHEL6 regarding HBSS. I searched the mailing archives, and can't figure out *why* the language was changed.

- Anyone remember why?
- Objections to reverting to the RHEL5 language?

EMail:
> from the RHEL 6 STIG:
>
> ============================
> Group ID (Vulid): V-38667
> Group Title: SRG-OS-000196
> Rule ID: SV-50468r1_rule
> Severity: CAT II
> Rule Version (STIG-ID): RHEL-06-000285 Rule Title: The system must 
> have a host-based intrusion detection tool installed.
>
> Vulnerability Discussion: Adding host-based intrusion detection tools can provide the capability to automatically take actions in response to malicious behavior, which can provide additional agility in reacting to network threats. These tools also often include a reporting capability to provide network awareness of system, which may not otherwise exist in an organization's systems management regime.
>
> Check Content:
> Inspect the system to determine if intrusion detection software has been installed. Verify the intrusion detection software is active.
> If no host-based intrusion detection tools are installed, this is a finding.
>
> Fix Text: The base Red Hat platform already includes a sophisticated auditing system that can detect intruder activity, as well as SELinux, which provides host-based intrusion prevention capabilities by confining privileged programs and user sessions which may become compromised.
>
> Install an additional intrusion detection tool to provide complementary or duplicative monitoring, reporting, and reaction capabilities to those of the base platform. For DoD systems, the McAfee Host-based Security System is provided to fulfill this role.
> ========================
>
>
> to look more like this from the RHEL 5 STIG:
>
> =========================
> Group ID (Vulid): V-782
> Group Title: GEN006480
> Rule ID: SV-37746r2_rule
> Severity: CAT II
> Rule Version (STIG-ID): GEN006480
> Rule Title: The system must have a host-based intrusion detection tool installed.
>
> Vulnerability Discussion: Without a host-based intrusion detection tool, there is no system-level defense when an intruder gains access to a system or network. Additionally, a host-based intrusion detection tool can provide methods to immediately lock out detected intrusion attempts.
>
> Responsibility: System Administrator
> IAControls: ECID-1
>
> Check Content:
> Ask the SA or IAO if a host-based intrusion detection application is loaded on the system. The preferred intrusion detection system is McAfee HBSS available through Cybercom. If another host-based intrusion detection application, such as SELinux, is used on the system, this is not a finding.
> =========================
>
> People are getting confused and SElinux and HBSS are getting installed with SElinux being disabled to make things work.



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------------------------------

Message: 2
Date: Tue, 24 Sep 2013 18:00:13 -0400
From: Brian Peake <PEAKE at HIPKLLC.COM>
To: <scap-security-guide at lists.fedorahosted.org>
Subject: Re: RHEL5 vs RHEL6 language on HBSS
Message-ID: <CE678204.7C03%PEAKE at HIPKLLC.COM>
Content-Type: text/plain;	charset="ISO-8859-1"

I believe the current guidance is to have McAfee Agent installed only. At least that is where we are at now, and just went through our IV&V. I also have uvscan installed along with AIDE w/ daily cron jobs for both. HIPS etcŠ are not "required". But again I am not an expert and do not delineate any guidance.

I would have to find the guidance, and am on travel right now, however when I return my ePo/HBSS "guy" can give me the reference.


Very Respectfully,
Brian Peake





On 9/24/13 4:35 PM, "Moessbauer, David" <david.moessbauer at progeny.net>
wrote:

>I am not sure about your comment regarding "[HBSS] isn't *mandated.*"
>
>My experience with the fleet tells me otherwise, as both ODAA during 
>accreditation and deployed platforms are requiring compliance with HBSS 
>of our system.  Additionally, I do believe I have seen a CTO 
>distributed by the Navy that states otherwise, though I can't seem to 
>put my hands on it at the moment.
>
>Please advise if I am incorrect in this belief.
>
>
>v/r
> 
>David Moessbauer
>(410) 627-5633 (M)
> 
>The Information contained in or attached to this communication may be 
>confidential and privileged proprietary intended only for the 
>individual/s or entity to whom/which it is addressed. Any unauthorized 
>use, distribution, copying or disclosure of this information is 
>strictly prohibited. If you have received this communication in error 
>please contact the sender immediately and delete from your system.
>
>
>-----Original Message-----
>From: scap-security-guide-bounces at lists.fedorahosted.org
>[mailto:scap-security-guide-bounces at lists.fedorahosted.org] On Behalf 
>Of Truhn, Chad M CTR NSWCDD, CXA30
>Sent: Tuesday, September 24, 2013 4:12 PM
>To: scap-security-guide at lists.fedorahosted.org
>Subject: (nwl) RE: RHEL5 vs RHEL6 language on HBSS
>
>Shawn,
>
>Reverting back to an email you sent to gov-sec back in June (attached), 
>you said:
>
>" So, even though you've configured your system with all these auditing 
>rules, configured AIDE for integrity checking, *and* have SELinux 
>enforcing, FSO wants you to layer on an *additional* level of host 
>intrusion detection which can provide "complementary or duplicative 
>monitoring, reporting, and reaction capabilities."
>
>As stated in the STIG, DoD provides McAfee HBSS to perform this function.
>But it isn't *mandated.*"
>
>
>Then in ticket #262 from the SSG page:
>
>"HIPS is a category of technology, and while McAfee? is commonly used 
>to meet this, is not tied to a particular product/vendor. Users would 
>be wise to select technology which is certified to run on RHEL6 without 
>disabling key OS level protection mechanisms (e.g., if McAfee? breaks 
>your system, use something else)." [1]
>
>" MPO/FSO/RH: 3rd party products should work with the operating systems 
>they run on, without forcing users to disable security mechanisms. 
>Won't fix."
>
>
>
>
>I have always been confused about this language.  Do we want SELinux 
>enabled *AND* HIPS installed?  Or should it be an *OR*?  One says 
>McAfee HBSS/HIPS is fine, another says it isn't.  I'm confused!!!
>
>
>[1] https://fedorahosted.org/scap-security-guide/ticket/262
>
>
>
>
>-----Original Message-----
>From: scap-security-guide-bounces at lists.fedorahosted.org
>[mailto:scap-security-guide-bounces at lists.fedorahosted.org] On Behalf 
>Of Shawn Wells
>Sent: Tuesday, September 24, 2013 3:21 PM
>To: scap-security-guide at lists.fedorahosted.org
>Subject: RHEL5 vs RHEL6 language on HBSS
>
>I received the following note from a colleague today, outlining the 
>wording changes between RHEL5 and RHEL6 regarding HBSS. I searched the 
>mailing archives, and can't figure out *why* the language was changed.
>
>- Anyone remember why?
>- Objections to reverting to the RHEL5 language?
>
>EMail:
>> from the RHEL 6 STIG:
>>
>> ============================
>> Group ID (Vulid): V-38667
>> Group Title: SRG-OS-000196
>> Rule ID: SV-50468r1_rule
>> Severity: CAT II
>> Rule Version (STIG-ID): RHEL-06-000285 Rule Title: The system must 
>> have a host-based intrusion detection tool installed.
>>
>> Vulnerability Discussion: Adding host-based intrusion detection tools 
>>can provide the capability to automatically take actions in response 
>>to malicious behavior, which can provide additional agility in 
>>reacting to network threats. These tools also often include a 
>>reporting capability to provide network awareness of system, which may 
>>not otherwise exist in an organization's systems management regime.
>>
>> Check Content:
>> Inspect the system to determine if intrusion detection software has 
>>been installed. Verify the intrusion detection software is active.
>> If no host-based intrusion detection tools are installed, this is a 
>>finding.
>>
>> Fix Text: The base Red Hat platform already includes a sophisticated 
>>auditing system that can detect intruder activity, as well as SELinux, 
>>which provides host-based intrusion prevention capabilities by 
>>confining privileged programs and user sessions which may become compromised.
>>
>> Install an additional intrusion detection tool to provide 
>>complementary or duplicative monitoring, reporting, and reaction 
>>capabilities to those of the base platform. For DoD systems, the 
>>McAfee Host-based Security System is provided to fulfill this role.
>> ========================
>>
>>
>> to look more like this from the RHEL 5 STIG:
>>
>> =========================
>> Group ID (Vulid): V-782
>> Group Title: GEN006480
>> Rule ID: SV-37746r2_rule
>> Severity: CAT II
>> Rule Version (STIG-ID): GEN006480
>> Rule Title: The system must have a host-based intrusion detection 
>>tool installed.
>>
>> Vulnerability Discussion: Without a host-based intrusion detection 
>>tool, there is no system-level defense when an intruder gains access 
>>to a system or network. Additionally, a host-based intrusion detection 
>>tool can provide methods to immediately lock out detected intrusion attempts.
>>
>> Responsibility: System Administrator
>> IAControls: ECID-1
>>
>> Check Content:
>> Ask the SA or IAO if a host-based intrusion detection application is 
>>loaded on the system. The preferred intrusion detection system is 
>>McAfee HBSS available through Cybercom. If another host-based 
>>intrusion detection application, such as SELinux, is used on the 
>>system, this is not a finding.
>> =========================
>>
>> People are getting confused and SElinux and HBSS are getting 
>>installed with SElinux being disabled to make things work.
>
>
>
>_______________________________________________
>scap-security-guide mailing list
>scap-security-guide at lists.fedorahosted.org
>https://lists.fedorahosted.org/mailman/listinfo/scap-security-guide
>_______________________________________________
>scap-security-guide mailing list
>scap-security-guide at lists.fedorahosted.org
>https://lists.fedorahosted.org/mailman/listinfo/scap-security-guide
>




------------------------------

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