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

Xen Server Escape Exploit News

Posted September 10, 2012    Jerome Diggs

In today’s ever expanding virtualized data center it’s critical to ensure hypervisors/host systems are properly secured and patched to prevent bleed over into often dense populations of the corporate infrastructure.  According to a recent blog post on Threatpost, French research firm VUPEN security has revealed exploit code that takes advantage of a vulnerability in Xen 4.1.2 based on advisory CVE-2012-0217.  Although the vulnerability was reported in June there are many firms that may have not implemented the patch or worse haven’t identified whether or not they are vulnerable yet.

There are currently 5 audits (as it relates to Xen Server) in our Retina vulnerability scan engine to assist in closing a security vulnerability that can enable an attacker to gain control of the hosting hypervisor system (CVE-2012-0217). These audits have been released with Retina Network Community and the commercial version of Retina Network. Users can include these checks in a general vulnerability scan, or can create a targeted scan to specifically look for these specific vulnerabilities using the following Retina audits:

  • Audit ID 16582 – SUSE-SU-2012:0730: xen – SUSE 11 SP2
  • Audit ID 16583 – SUSE-SU-2012:0730: xen – SUSE 11 SP1
  • Audit ID 16584 – SUSE-SU-2012:0730: xen – SUSE 10 SP4
  • Audit ID 16585 – SUSE-SU-2012:0730: xen – SUSE 10 SP3
  • Audit ID 16586 – SUSE-SU-2012:0730: xen – SUSE 10 SP2

Retina has 3 additional audits dealing with other operating systems (FreeBSD, Red Hat Linux and Windows) affected by the advisory.

  • Audit ID 16587 – FreeBSD-SA-12:04: sysret
  • Audit ID 16579 – Redhat Kernel vulnerabilities (20120612) – RHEL 5
  • Audit ID 16553 – Microsoft Windows Kernel Privilege Escalation (2711167)

If you have concerns of the security posture of your virtualized environments feel free to download and try out our community version to discover, assess and gain remediation guidance in our simple to use standalone scanner. In addition to standard assessment of patches, insecure configurations and zero-days, the Retina solutions also provides in-depth credentialed VMWare scanning (VMWare vCenter, ThinApp and Offline scanning) https://www.eeye.com/purchase/compare-products across your enterprise.

We should also mention that we have a new version of our Retina Network scanner planned for later this month that includes a complete user interface overhaul and allows users to select from a list of built-in profiles to align the product to your specific job function.

Stay tuned…

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Additional articles

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PowerBroker for Mac: A Least-Privileged Apple a Day…

Posted July 27, 2015    Jason Silva

BeyondTrust PowerBroker for Mac reduces the risk of privilege misuse by enabling standard users on Mac OS X to perform administrative tasks successfully without entering elevated credentials.

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On Demand Webinar – Now is the time for Privileged Account Management

Posted July 24, 2015    BeyondTrust Software

In this webinar, SANS Instructor and Founder of Voodoo Security, Dave Shackleford, will revisit several hacking and breach scenarios that involved privileged accounts, and use these as examples while discussing tools and tactics to get this problem under control once and for all.

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Privileged Account Management: The Time is Now

Posted July 22, 2015    Dave Shackleford

There’s plenty of problems we don’t have great options for in InfoSec today. Malware is a pain point that keeps evolving rapidly. 0-day exploits are tough to prepare for. Privileged account management? We got this. We know the root causes, we know how it manifests, we know how to get it under control effectively, and there are great technology solutions that are enterprise-class.

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