Log4j Vulnerability: The Crisis and its Quick fix

Log4j Vulnerability: The Crisis and its Quick fix


Another vulnerability named Log4Shell is being promoted as one of the most noticeably awful cybersecurity flaws to have been found. The vulnerability depends on an open-source logging library utilized in many applications by ventures and even government offices. It was first found by Minecraft players yet soon it was understood that this vulnerability wasn’t only a Minecraft exploit, yet chips away at each program utilizing the Log4j library.
The endeavors for this vulnerability are as of now being tried by unethical programmers, as indicated by a few reports and it grants them admittance to an application, and might actually allow them to run vindictive programming on a gadget or servers.

Figure 1: FEATURES


The issue impacts Log4j 2 forms which is an exceptionally common logging library utilized by applications across the world. Logging allows engineers to see all the movements of an application. Tech organizations, for example, Apple, Microsoft, Google all depend on this open-source library, as CloudFare, Amazon, and others. The vulnerability is serious in light of the fact that taking advantage of it could permit unethical programmers to control java-based web servers and dispatch what is called ‘remote code execution’ assaults. In basic words, the vulnerability could permit an unethical programmer to assume responsibility for a system. The issue is serious as the library is “ubiquitous” across applications and the exploit gives full server control and it is not difficult to execute.


The strategic solutions to the above-mentioned problems are as follows and We at vTech provides security services that are up to date and compatible with the application environment:

  • Please note that Log4J v1 is End of Life (EOL) and will not receive patches for this issue. It is also vulnerable to other RCE vectors and it is recommended to migrate to Log4J 2.15.0
  • Implementation of the latest patch of production for the environments should be there if possible.
  • Look out for vendor patches as they become available and manually check for Log4J in projects pom.xml.
  • If upgrading is not possible, then ensure that the -Dlog4j2.formatMsgNoLookups=true system is property is set on both client- and server-side devices.
  • You can also use “Nessus” which is a remote security scanning tool, which filters a PC and raises an alarm assuming it finds any weaknesses that malicious hackers could use to get to any PC you have associated with a network.

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