Log4J Zero-Day Flaw – Are you are risk? And How Do you Protect Yourself?

Log4J cyber security

The Log4j vulnerability is effecting everything from development tools and games like Minecraft to cloud and security devices and even your car. Therefore the question is what do we look for?What is the latest information about keeping you and your business safe?

Firstly, what is Log4J?

Log4J is a flaw in a Java library.

For those reading this who are less technically included, Java is baked into many pre-made applications and used across a number of services. Therefore this vulnerability is prevalent across a number of attack vectors. Because of this it is currently the most talked about and high risk security vulnerability on the market at the moment with everyone scrabbling to patch out the risk.

The library is developed by the open-source Apache Software Foundation and is a key Java-logging framework. As detected in the vulnerability logged as CVE-2021-44228, a remote code execution flaw in Log4J, was already being exploited in the wild. Any system which has the same vulnerability is at serve risk. Warnings have been issued by the UK’s National Cyber Security Centre (NCSC).

 

What is at risk?

Basically any device which is exposed to the internet is at risk if it is running Apache Log4J versions 2.0 to 2.14.1. Now, the list of applications that have this would fill pages and pages – everything for Minecraft servers to Tesla’s car OS, with companies like Apple and Amazon also being pulled into the mix. Because of the way that Apache package software this vulnerability as per the NCSC notes, can also be found in anything running Apache Struts2, Solr, Druid, Flink, and Swift frameworks. With AWS having detected and working to patch the vulnerability currently, pushing mitigation protections via its CloudFront service.

Vendors with popular products known to be still vulnerable include Atlassian, Amazon, Microsoft Azure, Cisco, Commvault, ESRI, Exact, Fortinet, JetBrains, Nelson, Nutanix, OpenMRS, Oracle, Red Hat, Splunk, Soft, and VMware. And this list will continue to grow as product try to patch out the issue and make it known they have the vulnerability.

Log4J java

What can I do right now?

Because there is currently no direct patch for this, the best option is possible is to Airgap any system that is using or known to have Apache components or frameworks as part of its services from the internet. If you can’t do this then get a Web Application Firewall in place in front of any public facing system as it is very likely that these players will be able to provide WAF rule sets quicker than Apache can get a new version of Log4j tested and out into the wild.

As soon as a patch is available, get your Apache systems patched and up to date and ensure that you check all of your systems, as many IT administration tools install parts of the Apache framework for running web front ends or even systems of management and control for your devices.

The best action you can take as an IT system owner is to review anything you have that is publicly facing or publicly accessible. You need to take action now as this attack does allow the system to have complete control taken over by the attacker and it is not yet known how other defence tools are responding to this infiltration as the Java libraries are normally a trusted location and as such can leave a business open to attack.

If you are concerned about the security of your business then I implore you to call Planet IT today. One of our security specialists will be able to join you on a call and discuss the mitigation actions you can take and advise you of the best way to ensure your business is protected.

If you would like to discuss with myself or any of the cyber security team at Planet IT about how you can better protect you business, should that be with new technology, strategies or even better back ups you can reach us using the contact details below;

Contact me at – LinkedIn Message James Dell or Email : james.dell@planet-it.net

Call 01235 433900 or Email : architecture@planet-it.net

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