Out of the frying pan and into a better fire…

A great deal has changed in the last two months for the better.  My family has completed our move to the South Carolina and we are loving all of it.  There is still a good amount of adjustment to do, but we are getting by.  My only regret at this point is not being able to get my boat in the water just yet.

My career seems to be shaping up as well.  My plan from last year has mostly become reality after accepting my first ‘real’ management job as Director of Data Security at a local financial institution.  Currently a “department of one” as my boss likes to say, there will be plenty of potential to grow and develop.  My next goal is to get out there and meet some like-minded infosec people in the area, find some meet ups, and just get to know people.

The one outstanding task is finishing my GPEN certificate.  I have been unable to finish the course completely, but have started putting together my index.  I really want to finish the class and pass the cert, but other things have taken priority.  Let’s see if I can buckle down and get through this too.

Lessons Learned from a NERC CIP Audit

Lesson 1 – NERC CIP auditors are not normal auditors.  They are industry veterans from various aspects of the utility industry, and they know their stuff.  They also know the standards inside and out.

Lesson 2 – Be prepared.  This goes hand-in-hand with lesson one.  If you do not know what you are talking about, they are going to figure that out very quickly.  Make sure everyone involved in the audit is in the sessions they need to be, and available to be called in if needed.  Review your data request answers and evidence.

Lesson 3 – If you fixed something outside the audit period, it doesn’t count.

Lesson 4 – If you fixed something, you better have documented it appropriately or it doesn’t count.

Lesson 5 – Proof read your documentation, policies, and other evidence multiple times before you submit it.  If your wording is off, a copy/paste is wrong, or you cite the wrong standards it will confuse the auditors.  If they are confused, you are going to spend a fair amount of time explaining what you meant to say.  If you have to explain it to them, are your policies good enough from employees to understand?

Lesson 6 – Do not use ‘passed’ on your vulnerability assessment lightly.  If you performed the check for compliance, simply say the check was completed and provide the appropriate evidence.  We were advised to use ‘completed’ instead of ‘passed.’

Lesson 7 – Remove your notes and other excess information from the vulnerability assessment sheet.  I neglected to do this which caused me a bit of pain when the auditors encountered a note reading “Nobody seems to know what this is for” on a firewall rule.  Additionally, we included the entire firewall rule set instead of just the rules related to the electronic security perimeter (ESP), which caused a bit of confusion for the auditors.

Lesson 8 – Restrict the vulnerability assessment results you present the auditors with to CIP-005, CIP-007, and CIP-010 only.  You may choose to do a normal security risk assessment across the entire SCADA infrastructure, but this should be scrubbed down to a NERC CIP specific VA report before submission to the auditors.

Lesson 9 – If you use Active Directory in any way to authenticate/authorize access into or within the electronic security perimeter, then it will be considered an EACMS and reviewed accordingly.  Many shops will setup a SCADA specific AD environment to prevent NERC CIP scope creep.

Lesson 10 – They auditors are going to find something…that is what they do.  Your job is to ensure you have minimized the impact of whatever they find, and to demonstrate you are the subject matter expert(s) that you claim to be.  Do not take it personally.

Is Making Telco Monopolies Wholesale To Their Competitors Harmful?

It looks like big telco is trying to break up wholesale subsidies, according to an article in ArsTechnica.

I’m split in my opinion on the one.  On one hand we need competition and smaller providers. Smaller providers often offer a variety of services that SMB’s can leverage as they expand and grow for a better price than competitors. They often will work directly with customers who have a few big customer needs without the ability to pay big customer prices.  These lower wholesale prices help small providers punch well above their weight class, which still compensating large providers for the use of the infrastructure investment.

On the other hand, I’ve seen what happens when regulated monopolies are forced to open their infrastructure to their competitors and barely be able to recover costs.  Eventually, the infrastructure lags as the incumbent is unable/unwilling to reinvest in infrastructure upgrades.  This leaves the smaller of the “big” incumbents ripe for takeover, which in turn leads to the new owner simply milking the investment and ditching it later. This is bad for all customers, but worse for residential who bear the brunt of the costs for ‘service of last resort’ in rural areas.

Fairpoint (ME/NH/VT) is a great example of this.  When Verizon made the choice to get out of the wires business, they stopped investing in their people and infrastructure in preparation for sale.  Along come Fairpoint, a small conglomerate of municipal level telcos who somehow scraped together the money for this.  The three PUC’s stepped in an strong-armed terms into the deal which required investment in broadband to rural areas, adding to the already debt-heavy deal.  Somewhere along the lines, a VC firm steps in to bail out Fairpoint which had been bleeding money.  The writing was on the wall at this point – Fairpoint is up for sale.  Eventually, Consolidated Communications picked up Fairpoint for likely less than Verizon sold it for.  Who lost out in the end?  Most of rural New England who during Fairpoint’s reign lost their provider of last resort, only recently received even moderate high speed bandwidth, and now suffer during service calls bungled by low cost contract workers.

At the end of the day, the best solution is to maintain the wholesale structure but negotiate a fair price for both sides.  The incumbent should be able to offer the same price service provided across their network as the small guy does reselling their service.  This would force the smaller company to be creative and offer value-adds not found at the incumbent.  Even with this approach, I’m not sure what the end result would be or if this would even be ‘fair’ in today’s environment.  Maybe we should all just get fiber to the home and transition to IP services?

Career update

I’ve made a great deal of progress with my personal goals over the last few months. My CISSP is currently in review waiting for final approval, and my GPEN is in progress. I’ve even managed to post semi-regular blog posts.

We are steadily making progress on our family goals as well. A child enrolled in college, one property sold, another on the market, and an offer placed on our new property. If things keep moving at this pace, 2018 is going to be a great year.

More to come!

Fixing SSL weak cipher & hashing issues in Windows

One of my biggest annoyances with my regular Nessus scans are the continuous medium risks related to weak SSL ciphers. Nartac Software created a simple tool to help admins fix these issues: ISSCrypto.  Simply download the tool, then run it as an administrator on your Windows box. I recommend you take the “Best Practices” template and apply those settings first. Always back up your current settings before changing anything!

Energy Services Group attacked?

I became aware yesterday that several sources are reporting Energy Services Group was “hacked” or “attacked.”  There’s been a little saber rattling about hackers getting control of the US energy markets.  Being that I’ve had some dealings with ESG over the years, I thought I might speak to this.

Here’s what we know at this point:  ESG suffered a massive outage, but the cause is not known.  ESG appears to have gotten some systems related to competitive energy providers back online, however that is all I know at this time.

What does ESG do?  According to their website, the provide various services to the energy industry ranging from data management, retail billing, pipeline and storage management, and market management.  My experience with them to date is as an EDI provider handling the competitive energy provider data communication with utility companies.  They process the enrollments, billing, payment, and usage data sent by the utility to the CEP.  CEP’s operate in a low profit margin market, making outsourcing the backend functions almost mandatory.

The services ESG provides do not equate to them having any direct control over the energy grid (gas or electric) – to my knowledge.  ESG does have access to a treasure trove of PII such as names, addresses, metering and billing information, gas and electric wholesale orders and pricing information.  I do not believe ESG has any direct influence over the ICS systems in use by their customers.  At this time, I think we need to keep FUD to a minimum but ESG needs to inform their customers of the possible risks.

The electric utility companies who serve customers directly impacted by the ESG breach as also victims here – they will undoubtedly have to deal with an influx of customer and regulatory inquires over this matter.  However, they have absolutely no control over who signs up for competitive supply, nor who the supplier uses for their backend systems.  All of these expenses will be passed directly on to the rate payers in the end – both by ESG and the various regulated entities affected by this.

There are a couple scenarios here:  Whatever happened caused ESG to be knocked totally offline – even requiring them to use a Gmail account for communication.  My suspicion is this was a ransomware attack that got out of hand, as they appear to have been able to get back up and running in a relatively short time.  But the company as yet has not released any public information.

Links

 

Why I’m ditching Google

A few months ago, I had moved almost all of my storage into Google Drive, OneDrive, or iCloud depending on the usage.  This allowed me to turn down my old Dell FreeNAS server in an attempt to save on my electric bill.  I’ve never been completely on-board with this model, even though I know I’m keeping some physical backups for emergencies.  It could be that I spend too much time listening to Michael Bazzell and Justin Carroll or the control freak in me, but not having control of my data really bugs me.

The revelations from the Cambridge Analytica debacle stirred up information on just what Facebook, Google, and Apple store.  I won’t go into detail here, as The Guardian and TechDirt have two great articles on this.  This all left me wondering what Google, Microsoft, and Apple are really doing with all of my files, photos, and email.  All of these companies could hand my information over to the government without warning, or could be breached and I would never know.  It’s definitely time to bring everything back in house.

My initial plan is to bring all of my files back down from the cloud and simply store them on my FreeNAS server.  Once that is done, a NextCloud server should provide me a solid way to sync files across devices as well as online collaboration.

What I’m lacking is a plan to privatize my email.  Do I ramp up my ProtonMail account?  Or do I build my own email server?  Both have their pros and cons, but what is really worrisome is what happens to ProtonMail if it simply disappears?  What if our government decides to block access or make it illegal to store your email in another country?  On the other hand, do I really want to take on managing my own email infrastructure?  In the end, I think I will in-house the majority of my email and rely on ProtonMail for secure backup mail client.

I expect the whole process to take several weeks due to current time constraints.  I have FreeNAS back up and running, however I need to get a solid back strategy in place before moving forward.  Ideally, I would have an encrypted cloud-based backup like RSYNC.NET or Amazon S3 combined with a offline physical copy.  I have some details to iron out yet.

Multiple Cisco IOS/IOS XE vulnerabilities posted

Folks – it’s time to tick everyone off with network maintenance windows!  Cisco PSIRT released 30 vulnerabilities in their router firmware across multiple versions of IOS and IOS EX.  Three critical vulnerabilities include one hard-coded credential affecting all IOS XE routers running IOS XE v16, and two which affect v15 under certain conditions.  Fifteen high risk vulnerabilities run the gamut from denial of service, buffer overflow, and privileged escalation.

A complete list follows, and I will update it as more come in today.

Title Importance Vulnerability Requirements
Cisco IOS and IOS XE Software Smart Install Remote Code Execution Vulnerability Critical Remote Code Execution Only if Smart Install client enabled
Cisco IOS and IOS XE Software Quality of Service Remote Code Execution Vulnerability Critical Remote Code Execution If “show udp” command shows active UDP connection
Cisco IOS XE Software Static Credential Vulnerability Critical Hardcoded Credentials All devices running IOS XE
Cisco IOS XE Software Web UI Remote Access Privilege Escalation Vulnerability High Priviledge Elevation Only affected if HTTP enabled and AAA not configured
Cisco IOS XE Software Simple Network Management Protocol Double-Free Denial of Service Vulnerability High Remote DoS Only if SNMP enabled
Cisco IOS Software Simple Network Management Protocol GET MIB Object ID Denial of Service Vulnerability High Remote DoS Only if SNMP enabled
Cisco IOS and IOS XE Software Smart Install Denial of Service Vulnerability High Remote DoS Only if Smart Install client enabled
Cisco IOS XE Software User EXEC Mode Root Shell Access Vulnerabilities High Priviledge Elevation All devices running IOS XE
Cisco IOS XE Software with Cisco Umbrella Integration Denial of Service Vulnerability High Remote DoS Only if Cisco Umbrella integration active
Cisco IOS, IOS XE, and IOS XR Software Link Layer Discovery Protocol Buffer Overflow Vulnerabilities High Buffer Overflow Only if LLDP is configured
Cisco IOS XE Software for Cisco Catalyst Switches IPv4 Denial of Service Vulnerability High Remote DoS All devices running IOS XE including Catalyst Switches
Cisco IOS and IOS XE Software Internet Key Exchange Version 1 Denial of Service Vulnerability High Remote DoS Only if IKEv1 enabled
Cisco IOS and IOS XE Software Internet Key Exchange Memory Leak Vulnerability High Remote DoS Only if IKE enabled
Cisco IOS XE Software Internet Group Management Protocol Memory Leak Vulnerability High Remote DoS Only if IP Multicast Routing enabled
Cisco IOS XE Software Zone-Based Firewall IP Fragmentation Denial of Service Vulnerability High Remote DoS Only if “zone security” enabled
Cisco IOS Software Integrated Services Module for VPN Denial of Service Vulnerability High Remote DoS Only if Cisco ISM-VPN installed and running
Cisco IOS and IOS XE Software DHCP Version 4 Relay Denial of Service Vulnerability High Remote DoS Only if DHCP Relay Agent (ip helper) running and option 82 insertion/encapsulation configured
Cisco IOS and IOS XE Software DHCP Version 4 Relay Reply Denial of Service Vulnerability High Remote DoS Only if DHCP Relay Agent (ip helper) running and option 82 insertion/encapsulation configured
Cisco IOS and IOS XE Software DHCP Version 4 Relay Heap Overflow Denial of Service Vulnerability High Remote DoS Only if DHCP Relay Agent (ip helper) running and option 82 insertion/encapsulation configured
Cisco IOS and IOS XE Software Bidirectional Forwarding Detection Denial of Service Vulnerability High Remote DoS Only select models of supervisor engine when BFD enabled
Cisco IOS XE Software Arbitrary File Write Vulnerability Medium Write to arbitrary files Only affected if HTTP enabled
Cisco IOS XE Software Web UI Cross-Site Scripting Vulnerabilities Medium Cross-site scripting Only affected if HTTP enabled
Cisco IOS Software Login Enhancements Login Block Denial of Service Vulnerabilities Medium Remote DoS Only if Smart Install client enabled
Cisco IOS XE Software Switch Integrated Security Features IPv6 Denial of Service Vulnerability Medium Local DoS Only certain models w/ integrated switch and IPv6 interface
Cisco IOS XE Software REST API Authorization Bypass Vulnerability Medium Authorization Bypass Affects all IOS XE – but only if REST API used?
Cisco IOS XE Software for Cisco 4000 Series Integrated Services Routers Privileged EXEC Mode Root Shell Access Vulnerability Medium Priviledge Elevation Cisco 4000 series ISRs
Cisco IOS XE Software Privileged EXEC Mode Root Shell Access Vulnerability Medium Priviledge Elevation All devices running IOS XE
Cisco IOS Software 802.1x Multiple-Authentication Port Authentication Bypass Vulnerability Medium Authentication Bypass Only if 802.1X in multi-auth mode
Cisco IOS XE Software CLI Command Injection Vulnerabilities Medium Local Command Injection All devices running IOS XE
Cisco IOS and IOS XE Software Forwarding Information Base Denial of Service Vulnerability Medium Remote DoS All devices running IOS XE

Lab setup

The draft for this project has changed three times since starting – mostly due to resource constraints on my end.  I’ve bounced between hardware, hypervisors, and focus but I’ve settled on an approach.  My immediate needs outweighed the need for a full VMWare stack.  What I really needed was a FreeNAS replacement, and after trying a few different options I’ve ended up right back on FreeNAS 11.  This platform will support most of my storage, media, and VM needs for a year or so.  It will also support several options for backing up and securing my data, allowing me to get off the cloud as much as possible.

The entire system is setup on a Dell Precision T7500 currently running 2 Intel Xeon E5520, 12 GB RAM, and almost 2 TB of storage across 6 SATA hard drives.  This hardware comes with some downsides however:  the server is so physically large it has it’s own gravity; the processors lack the UG functionality required by bhyve to support virtualization; and the hardware draws a fair amount of power under the current configuration; and the hardware is old.  I’m correcting the UG support issue by ordering a couple E5620 processors, and possibly add additional RAM at a later date.  I might be able to cut power usage by configuring FreeNAS power management and migrating to smaller drives or SSD’s as well.

As a side note, I had considered going with an online lab or picking up an Intel NUC.  Both would have saved me a fair amount on my electrical bill, however at the end of the day I have two drivers.  The first was to ensure a minimum impact to my checking account right now, the second was to ensure a solid platform platform to ensure the privacy and security of my family files.  Since everything in this lab has been cobbled together from discarded hardware, I have little investment other than time.  Additionally, there is more than enough support bringing all of my information back down from the cloud. Once things get situated, I’ll likely migrate to a Intel NUC platform and a Synology NAS.

My current plan is to migrate everything hosted on other machines back on to either a FreeNAS jail until the CPU upgrade is complete.  This should be fairly straightforward as I am only migrating a Plex server and VPN gateway.  I also want to setup a Splunk jail for log collection, but I am debating on setting up ELK instead as a learning experience.  Once these are done and operational, I will be configuring at few different lab machines depending on what skills I am trying to hone.

After the consolidation is complete, I’ll have just the pfSense and FreeNAS physical boxes instead of four different machines.  I am assuming my security will be more robust as some functions are running on one box instead of a VM or jail.  The setup won’t help my power bills much but I can fix that by moving to newer hardware later.  I’ll document the process as I go.