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Showing 43 results for the search term "linux boot".


Voltage Fluctuations, Heat, and Other Side-Channel Attacks

A presentation at the recent Black Hat meeting discussed a side-channel attack on web servers. Variations in supply voltage and CPU temperature can cause errors which leak information about the server’s RSA secret key. Full details are in their paper “Fault-Based Attack of RSA Authentication.” This is another case where cloud provider infrastructure could provide […]



Circles are Bad. OVAL is Good.

In information assurance, it is critical to have the best reporting about your vulnerabilities.  Vulnerabilities, as you may recall from an earlier blog, are software flaws that may leave a system open to exploitation.  There are tools that help identify and assess vulnerabilities.  They are called vulnerability scanners, or VA tools. These are tools designed […]



Patching the Cloud

Vulnerability CVE-2012-0056 is a nasty one if you’re running a Linux kernel release 2.6.39 through 3.2.1. The exploit is a privilege escalation attack, meaning that the attacker has to get a foothold on your system. But once the attack has an unprivileged process on your system, its privileges can be elevated to root. Game over. […]


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