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Security in Context: The BeyondTrust Blog

Welcome to Security in Context

Bringing you news and commentary on solutions and strategies for protecting critical IT infrastructure in the context of your business.

sudo authentication bypass when clock is reset

Posted March 7, 2013    Rod Simmons

A recent discovery by a German researcher, Marco Schoepl, found that it is possible for a user to bypass sudo authentication by resetting the clock. To read more about this vulnerability see the articles on seclist.org and threatpost.com. What we have found is that many highly secure customers have already adopted the timestamp_timeout=0 setting which will bypass the default 5 minute password reentry interval and requires authentication for each command.

clock-resetYou could consider this vulnerability a configuration issue but it does highlight a general need to use a solution that provides an option for IO logging. Our PowerBroker Unix & Linux solution is a Command Control solution that also provides a method to perform IO Logging so you can replay a user’s entire session, after all, once they have elevated permissions it becomes vital to securely log the actions of that user.

It is always possible to have a configuration issue in any security system due to flexibility and general complexity of building a secure system. The key principle is to only delegate the rights needed and perform IO logging along with multi-factor authentication as an additional safety measure.

If you require a Sudo replacement, or want to implement greater controls where compliance requires it, PowerBroker Servers can help. Learn more about PowerBroker Servers now!

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Why big data breaches won’t always be so easy

Posted September 19, 2014    Byron Acohido

This blog post is republished with the permission of ThirdCertainty. See the original post here. – By: Byron Acohido, Editor-In-Chief, ThirdCertainty Some day, perhaps fairly soon, it will be much more difficult for data thieves to pull off capers like the headline-grabbing hacks of Home Depot and Target. That’s not a pipe dream. It’s the projected outcome…

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8 Reasons Your Privileged Password Management Solution Will Fail

Posted September 18, 2014    Chris Burd

Leveraging complex, frequently updated passwords is a basic security best practice for protecting privileged accounts in your organization. But if passwords are such a no-brainer, why do two out of three data breaches tie back to poor password management? The fact is that not all privileged password management strategies are created equal, so it’s critical…

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You Change Your Oil Regularly; Why Not Your Passwords?

Posted September 11, 2014    Chris Burd

There are many things in life that get changed regularly:  your car oil, toothbrush and hopefully, your bed sheets.  It’s rare that you give these things much thought – even when you forget to change them. But what if you’re forgetting something that can cost you millions of dollars if left unchanged for long periods…

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