Oxeye Releases Ox4Shell
January 12, 2022

Oxeye unveiled an open-source initiative with the introduction of Ox4Shell.

The powerful and free open-source payload deobfuscation tool is in a series of solutions to be developed by Oxeye to assist developers, AppSec professionals, and the open-source community. Ox4Shell is designed to confront what some are calling the “Covid of the Internet,” known as the Log4Shell zero-day vulnerability. To counter a very effective obfuscation tactic used by malicious actors, Oxeye’s new open-source tool (available on GitHub) exposes hidden payloads which are actively being used to confuse security protection tools and security teams.

As reported by experts, organizations globally continue to experience remote code attacks and the exposure of sensitive data due to the pervasive Log4Shell vulnerability. Discovered in Apache’s Log4J, a logging system in widespread use by web and server application developers, the threat makes it possible to inject text into log messages or log message parameters, then into server logs which can then load code from a remote server for malicious use. Apache has given Log4Shell a CVSS severity rating of 10 out of 10, the highest possible score. Since then, researchers found a similar vulnerability in the popular H2 database. The exploit is simple to execute and is estimated to affect hundreds of millions of devices.

As part of a new open-source initiative for 2022, Oxeye is unveiling this in a series of contributions designed to strengthen security efforts by deobfuscating payloads often coupled with Log4J exploits. Ox4Shell exposes obscured payloads and transforms them into more meaningful forms to provide a clear understanding of what threat actors are trying to achieve, allowing the concerned parties to take immediate action and resolve the vulnerability.

The Log4j library has a few unique lookup functions that permit users to look up environment variables, Java process runtime information, and so forth. These enable threat actors to probe for specific information that can uniquely identify a compromised machine they’ve targeted. Ox4Shell enables you to comply with such lookup functions by feeding them mock data that you control.

“Difficulties in applying the required patching to the Log4Shell vulnerability means this exploit will leave gaps for malicious attacks now and in the future. The ability to apply obfuscation techniques to payloads, thereby circumventing the rules logic to bypass security measures also makes this a considerable challenge unless the proper remedy is applied,” said Daniel Abeles, Head of Research at Oxeye. Deobfuscation will be critical to understanding the true intention(s) of attackers. Ox4Shell provides a powerful solution to address this and as a supporter of the open-source community ...”

Share this

Industry News

August 18, 2022

GitHub Enterprise Server 3.6 is now generally available.

August 18, 2022

Opsera announced the availability of Opsera GitCustodian.

August 18, 2022

CircleCI announced the general availability of the CircleCI Visual Configuration Editor, an all-in-one open source project for configuration editing, including creating component definitions and usages.

August 17, 2022

Cloudera announced the launch of Cloudera Data Platform (CDP) One, an all-in-one data lakehouse software as a service (SaaS) offering that enables fast and easy self-service analytics and exploratory data science on any type of data.

August 17, 2022

Prosimo introduced a new NetDevOps Infrastructure-as-Code (IaC) Toolkit that enables enterprises to accelerate the deployment of cloud networking.

August 17, 2022

Aqua Security announced the addition of cloud security posture management (CSPM) capabilities to the open source tool Aqua Trivy.

August 16, 2022

Canonical welcomes the .NET development platform, one of Microsoft’s earliest contributions to open source projects, as a native experience on Ubuntu hosts and container images, starting in Ubuntu 22.04 LTS.

August 16, 2022

Veracode announced the launch of the Veracode Velocity Partner Program.

August 16, 2022

Render announced a new monorepository feature that enables its customers to keep all of their code in one super repository instead of managing multiple smaller repositories.

August 15, 2022

Gadget announced Connections, a major new feature that gives app developers access to building blocks that enable them to build and scale ecommerce apps in a fraction of the time, at a fraction of the cost.

August 15, 2022

Opsera is on the Salesforce AppExchange to help enterprise customers shorten software delivery cycles, improve pipeline quality and security, lower operations costs and better align software delivery to business outcomes.

August 15, 2022

Virtusa Corporation earned the DevOps with GitHub on Microsoft Azure advanced specialization, a validation of a services partner's deep knowledge, extensive experience and proven success in implementing secure software development practices applying DevOps principles and using Azure and GitHub solutions.

August 15, 2022

Companies looking to reduce their cloud costs with automated optimization can now easily procure CAST AI via Google Cloud Marketplace using their existing committed spend.

August 11, 2022

Granulate, an Intel Company, announced the upcoming launch of its latest free cost-reduction solution, gMaestro, a continuous workload and pod rightsizing tool for Kubernetes cost optimization.

August 11, 2022

Rezilion announced the availability of MI-X, a newly created open-source tool developed by Rezilion's vulnerability research team.