08 January 2013 | 1,246 views

CERT Failure Observation Engine (FOE) – Mutational Fuzzing Tool

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The CERT Failure Observation Engine (FOE) is a software testing tool that finds defects in applications that run on the Windows platform. FOE performs mutational fuzzing on software that consumes file input. (Mutational fuzzing is the act of taking well-formed input data and corrupting it in various ways, looking for cases that cause crashes.) The FOE automatically collects test cases that cause software to crash in unique ways, as well as debugging information associated with the crashes. The goal of FOE is to minimize the effort required for software vendors and security researchers to efficiently discover and analyze security vulnerabilities found via fuzzing.

Note: this software package contains both the source code for the distribution and a binary installer package for Windows. The installer package will attempt to install FOE and all of its dependent software packages on the system. If you wish to evaluate the binary installer, it is highly advisable to do so on a non-enterprise system devoted solely to testing. An ISO image is also available for convenient use within a Windows virtual machine instance.

At the CERT/CC, we have already used the FOE infrastructure to find a number of critical vulnerabilities in products such as Adobe Reader, Flash Player, and Shockwave player; Microsoft Office and Windows; Google Chrome; Oracle Outside In; Autonomy Keyview IDOL; Apple QuickTime; and many others.

Note: Because fuzzing can fill temporary directories, put the target application in an unusable state, or trigger other operating-system-level bugs, we recommend that FOE be used in a virtual machine.

You can download FOE here:

http://www.cert.org/vuls/discovery/foe.html



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