The Coalfire Blog

Welcome to the Coalfire Blog, a resource covering the most important issues in IT security and compliance. You'll also find information on Coalfire's insights into the unique cybersecurity issues that impact the industries we serve, including Cloud Service Providers, RetailFinancial Services, Healthcare, Higher Education, Payments, Government, Restaurants, and Utilities.

The Coalfire blog is written by the company's leadership team and our highly-credentialed security assessment experts. We look forward to your comments, so please join the conversation.

  • On Padding Oracle Attacks

    March 22, 2018, John Stickle, Security Consultant, Coalfire

    Poodle is a vulnerability found in late 2014, and it is still occasionally seen during penetration tests. The vulnerability allows an attacker with a man-in-the-middle position to downgrade a secure connection between a client and a server to the vulnerable SSLv3. After the connection is downgraded, the attacker can proceed to perform the padding oracle attack, recover known plaintext, and decrypt the ciphertext.

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  • Takeaways from GAM 2018: Internal Audit Embraces Cybersecurity

    March 21, 2018, Nick Son, Vice President, Cyber Risk Services, Coalfire

    Last week, the Institute of Internal Auditors (IIA) held its 2018 Global Audit Management Conference at the Aria Resort in Las Vegas. With over 1,700 attendees, this was the most well-attended event in the history of the conference. Coalfire was one of the sponsors, and we were delighted to meet with so many forward-thinking audit executives and practitioners.

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  • Icebreaker: Chip Away at Active Directory Passwords, Automatically

    March 16, 2018, Dan McInerney, Senior Security Consultant, Coalfire

    To break the ice with Active Directory and shorten the cycles penetration testers spend on cracking passwords, I developed Icebreaker, a tool that automates network attacks against Active Directory and provides plaintext credentials. Icebreaker performs five network attacks in order...

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  • Introducing Red Baron - Automate the Creation of Resilient, Disposable, Secure, and Agile Infrastructure for Red Teams

    February 06, 2018, Marcello Salvati, Senior Security Researcher, Coalfire Labs

    The need to automate the creation of disposable red-team infrastructure is key to providing effective adversary simulations. As Coalfire Labs continued to grow, our team needed a system to quickly configure and spin up C2 and/or phishing infrastructure, run multiple campaigns at the same time, and recreate infrastructure if some parts got detected and/or blacklisted.

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  • How I discovered CVE-2017-13707

    October 05, 2017, Michael Allen, Senior Consultant, Coalfire Labs

    New Vulnerability Found Using Techniques Taught at Black Hat USA

    One of the topics I teach in Coalfire's Adaptive Penetration Testing course, given most recently at Black Hat 2017, is manual privilege escalation on Linux- and Unix-based systems. I also talk about how common it is to gain an initial foothold in an environment by leveraging default or easily guessable login credentials. During a recent red team engagement, I leveraged both of these techniques – not only to fully compromise the organization's Active Directory environment, but also to discover and exploit a previously unknown vulnerability in the Replibit Linux distribution installed on a server on their network.

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