A flaw, dubbed Log4Shell, is found in a widely used software tool.

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A fault, nicknamed Log4Shell, in a widely used software tool, is quickly emerging as a “major threat” to organizations around the world. Experts have described it as the worst computer vulnerability discovered in years. It was discovered in an open source logging tool that is ubiquitous in cloud servers and enterprise software used in industry and government. Experts believe that millions of servers have this software tool installed and that it would not be known for several days.

Adam Meyers, senior vice president of intelligence at cybersecurity firm Crowdstrike, said the internet is on fire right now. “People are scrambling to patch and all kinds of people are scrambling to exploit it.” Meyers said that on Friday morning, in the 12 hours since the existence of the bug was revealed, it was “fully militarized.” This means that the criminals had developed and distributed tools to exploit it.

Joe Sullivan, chief security officer at Cloudflare, said he found it hard to think of a company that was risk-free. Amit Yoran, CEO of cybersecurity firm Tenable, described it as the biggest and most critical vulnerability of the past decade, and possibly the biggest in modern computing history.

Located in open source Apache software used to run websites and other web services, the flaw was reported to the foundation on November 24 by Chinese tech giant Alibaba. Reports point out that it took two weeks to develop and release a fix. The Apache Software Foundation has rated vulnerability 10 on a scale of 1 to 10. Anyone with the exploit can gain full access to an unpatched computer that is running the software.


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The first signs of exploiting the loopholes were in Minecraft, an online game popular with kids and owned by Microsoft. Minecraft users were already using it to run programs on other users’ computers by pasting a short message into a chat box. However, Microsoft said it has released a software update for Minecraft users. “Customers who apply the fix are protected,” he said.

Experts say fixing systems around the world could be a complicated task. While most organizations and cloud providers such as Amazon Web Services should be able to update their web servers easily, the same Apache software is also often embedded in third-party programs, which can only be updated by their users. owners.

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