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What is syzkaller?

Syzkaller is an unsupervised, coverage-guided fuzzer designed to uncover vulnerabilities in kernel environments, and it supports multiple operating systems including FreeBSD, Fuchsia, gVisor, Linux, NetBSD, OpenBSD, and Windows. Initially created to focus on fuzzing the Linux kernel, its functionality has broadened to support a wider array of operating systems over time. When a kernel crash occurs in one of the virtual machines, syzkaller quickly begins the process of reproducing that crash. By default, it utilizes four virtual machines to carry out this reproduction and then strives to minimize the program that triggered the crash. During this reproduction phase, fuzzing activities may be temporarily suspended, as all virtual machines could be consumed with reproducing the detected issues. The time required to reproduce a single crash can fluctuate greatly, ranging from just a few minutes to possibly an hour, based on the intricacy and reproducibility of the crash scenario. This capability to minimize and evaluate crashes significantly boosts the overall efficiency of the fuzzing process, leading to improved detection of kernel vulnerabilities. Furthermore, the insights gained from this analysis contribute to refining the fuzzing strategies employed by syzkaller in future iterations.

What is Honggfuzz?

Honggfuzz is a sophisticated software fuzzer dedicated to improving security through its innovative fuzzing methodologies. Utilizing both evolutionary and feedback-driven approaches, it leverages software and hardware-based code coverage for optimal performance. The tool is adept at functioning within multi-process and multi-threaded frameworks, enabling users to fully utilize their CPU capabilities without the need for launching multiple instances of the fuzzer. Sharing and refining the file corpus across all fuzzing processes significantly boosts efficiency. When the persistent fuzzing mode is enabled, Honggfuzz showcases exceptional speed, capable of running a simple or empty LLVMFuzzerTestOneInput function at an astonishing rate of up to one million iterations per second on contemporary CPUs. It has a strong track record of uncovering security vulnerabilities, including the significant identification of the sole critical vulnerability in OpenSSL thus far. In contrast to other fuzzing solutions, Honggfuzz can recognize and report on hijacked or ignored signals resulting from crashes, enhancing its utility in pinpointing obscure issues within fuzzed applications. With its comprehensive features and capabilities, Honggfuzz stands as an invaluable resource for security researchers striving to reveal hidden weaknesses in software architectures. This makes it not only a powerful tool for testing but also a crucial component in the ongoing battle against software vulnerabilities.

Media

Media

Integrations Supported

FreeBSD
NetBSD
ClusterFuzz
Cygwin
Fuchsia Service Maintenance Software
Google ClusterFuzz
OpenBSD
OpenSSL

Integrations Supported

FreeBSD
NetBSD
ClusterFuzz
Cygwin
Fuchsia Service Maintenance Software
Google ClusterFuzz
OpenBSD
OpenSSL

API Availability

Has API

API Availability

Has API

Pricing Information

Free
Free Trial Offered?
Free Version

Pricing Information

Free
Free Trial Offered?
Free Version

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Company Facts

Organization Name

Google

Company Location

United States

Company Website

github.com/google/syzkaller

Company Facts

Organization Name

Google

Company Location

United States

Company Website

github.com/google/honggfuzz

Categories and Features

Categories and Features

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