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Security in Context: The BeyondTrust Blog

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

The Key to Controlling Privileged User Activity? Centralize!

Posted April 18, 2012    Peter McCalister

Those of you who follow my blogs know that sudo – and the issues it presents IT organizations – is one of my favorite discussion topics. I suppose that’s because there is no shortage of stories that surface on a regular basis on the problems that can arise with sudo, and I feel compelled to remind our blog readers that the ease of deploying sudo coupled with the speed in which it can quickly spin out of control makes for a risky combination. Just last week I talked to yet another customer who lamented the security and compliance challenges of sudo: he had just discovered that IT admins were adding privileges for their friends to sudoer files across the organization. Not that hard to do when there is a sudoer file on every server, each managed locally, independently, often by multiple administrators.

Centralization truly is a cornerstone for control. Dorothy’s blog from April 2nd introduced BeyondTrust’s latest new product, PowerBroker Servers Enterprise 7.0, and captured how PowerBroker’s centralized approach and granular privileged access control protects against intentional or accidental misuse of privilege that would otherwise allow employees, or hackers through advanced persistent threat (APT) attacks, to execute privileged commands.

In the case of sudo, local sudoer files create a plethora of opportunities for misuse of privilege. Besides the common problem of ad hoc administration of the individual files documenting user privileges, there is also the issue of local, unencrypted logs. Such logs can easily be tampered with by the local user, eliminating any evidence of damage done through privileged access – intentional or not. As Dorothy pointed out, managing privileged access on all your Linux and UNIX systems, whether physical, virtual, or deployed in the cloud, is critical to ensuring only valid users run privileged commands on your servers.

PBSE provides the means for controlling privileged access on Linux and UNIX systems through:
Centralized policy files for managing user privileges, implemented through a simple-to-use graphical interface
Active Directory integration for centralized user management
Out-of-the-box reports on all privileged activity as well as regulation-specific compliance reports

There’s no doubt about it: a centralized approach to managing privileged access is proven to significantly reduce operational complexity and costs, protect critical assets from misuse of privileged access, and demonstrate compliance.

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Additional articles

How To Implement The Australian Signals Directorate’s Top 4 Strategies

Posted October 20, 2014    Morey Haber

The Australian Signals Directorate (ASD), also known as the Defence Signals Directorate, has developed a list of strategies to mitigate targeted cyber intrusions. The recommended strategies were developed through ASD’s extensive experience in operational cyber security, including responding to serious security intrusions and performing vulnerability assessments and penetration testing for Australian government agencies. These recommendations…

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Exploiting MS14-059 because sometimes XSS is fun, sometimes…

Posted October 17, 2014    BeyondTrust Research Team

This October, Microsoft has provided a security update for System.Web.Mvc.dll which addresses a ‘Security Feature Bypass’. The vulnerability itself is in ASP.NET MVC technology and given its wide adoption we thought we would take a closer look. Referring to the bulletin we can glean a few useful pieces of information: “A cross-site scripting (XSS) vulnerability exists…

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Four Best Practices for Passing Privileged Account Audits

Posted October 16, 2014    Chris Burd

Like most IT organizations, your team may periodically face the “dreaded” task of being audited. Your process for delegating privileged access to desktops, servers, and infrastructure devices is a massive target for the auditor’s microscope. An audit’s findings can have significant implications on technology and business strategy, so it’s critical to make sure you’re prepared…

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