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Blog — Jul 14, 2021

Vulnerable Supply-Chain Software and George Santayana

1 minute read
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“Those who cannot remember the past are condemned to repeat it.”

It’s a fact: All non-trivial software code has bugs so don’t be surprised if vulnerabilities are discovered, and since patches are also non-trivial code, don’t be surprised if vulnerabilities are also discovered within the patches. It’s somewhat of a tautology within the discipline of Software Engineering.

Keeping this in mind, if you’re relying solely on the strength of the software to defend yourself, you’re setting yourself up for a grave mistake, especially if the software has elevated access permissions to your company and/or is critical to your company’s s function.

The Kaseya incident that eSentire investigated in 2018 is an unfortunate example of this. A few years ago, we discovered attackers had figured out how to gain high-level access to VSA instances around the world and had hijacked the process to install Monero cryptocurrency mining software. While we were helping Kaseya investigate the incident (through a responsible vulnerability disclosure methodology), I remember waiting on tenterhooks for the patches to be released; knowing that at any time the attackers could choose to pivot from cryptomining to ransomware. Luckily, at the time, the attackers chose to stay on the cryptomining course without escalating the situation.

When the final patch was released, everyone released a deep sigh of relief, but truly – it wasn’t over. It took years until someone else discovered a vulnerability and then chose to deploy ransomware. The rest, as they say, is recent history.

It’s critical to isolate and monitor all high-impact and/or critical systems within your organization. It’s not sufficient to merely keep them patched and up-to-date; you need to get a sense of what kind of activity is “expected” and have the capability to investigate when something unusual occurs; not so much an “Indicator of Compromise” but more of an “Indicator of Concern”. This is even more important for systems that have externally-facing access from the Internet in general.

Even properly-patched software has bugs, and vulnerabilities not yet discovered and/or exercised. The recent Microsoft Exchange, SolarWinds, and Kaseya events demonstrate this, and if we don’t figure out how to defend ourselves better, as George Santayana stated: “Those who cannot remember the past are condemned to repeat it,” to which I might add, “and it might be even worse the next time around.”

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Eldon Sprickerhoff
Eldon Sprickerhoff Founder and Chief Innovation Officer

Eldon Sprickerhoff is the original pioneer and inventor of what is now referred to as Managed Detection and Response (MDR). In founding eSentire, he responded to the incipient yet rapidly growing demand for a more proactive approach to preventing and investigating information security breaches. Now with over 20 years of tactical experience, Eldon is acknowledged as a subject matter expert in information security analysis. Eldon holds a Bachelor of Mathematics, Computer Science degree from the University of Waterloo.