![]() This allows hackers to execute arbitrary code inside your web application. The basics of a log4j attack involve a hacker using text messaging to gain remote control over a system through Apache log4j 2. The log4j vulnerability attacks a fundamental feature of today’s most popular logging tool.Īpache log4j 2 is an error logging library used by everything from Amazon to Microsoft. ![]() ![]() Log4j vulnerabilities in applications were first discovered on November 24th, of 2021 and have become one of the most serious threats since then. Your team should know these basics of Apache log4j security vulnerabilities and how you can patch them. This guide will walk you through everything from web application security testing for log4j vulnerabilities to how to secure an app from the attacks they can cause. A log4j security flaw creates a remote code execution vulnerability that hackers can use to execute malicious code. It’s affected everyone from Amazon Web Services and Cisco to VMware. The log4j vulnerability was discovered as a zero-day exploit in late 2021.
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