Researchers Find New Windows Exploit, Accidentally Tell Hackers How to Use It – Review Geek


In June, Microsoft patched a critical-rated vulnerability known as CVE-2021-1675. This vulnerability allowed hackers to take distant management over PCs by the Print Spooler system—fairly scary stuff! Unfortunately, researchers at Chinese tech firm Sangfor have set an identical exploit known as PrintNightmare on the unfastened after telling hackers how to reap the benefits of a beforehand undiscovered bug.

How did this occur? Well, Sangfor is making ready to maintain a convention on Windows’ printer system, which has at all times been weak to hackers. To get individuals prepared for this convention, Sangfor determined to publish a Proof of Concept (POC) explaining how the recently-patched CVE-2021-1675 works and all the harmful issues you are able to do with it.

But these researchers weren’t enjoying with CVE-2021-1675. It seems that they’d found an identical vulnerability within the Windows Print Spooler known as PrintNightmare—which now carries the flattering CVE-2021-34527 moniker. By publishing a POC on PrintNightmare, Sangfor successfully taught hackers how to reap the benefits of a harmful, zero-day bug within the Windows system.

PrintNightmare impacts all variations of Windows, according to Microsoft. It’s a bug inside the Windows Print Spooler—an advanced instrument that Windows makes use of to juggle printing schedules, amongst different issues. Hackers who exploit this vulnerability acquire full management over a system, with the ability to run arbitrary code, set up software program, and handle information.

In a June 1st Microsoft Security Response Center publish, the corporate states that hackers want to log right into a PC earlier than working the PrintNightmare exploit (that means that companies, libraries, and different organizations with giant networks stands out as the most weak). Microsoft says that hackers are actively exploiting PrintNightmare to compromise programs, so involved events ought to take steps to mitigate the problem.

Currently, although, the one method to defend a PC from PrintNightmare is to disable printing features just like the Print Spooler. This precaution could also be unattainable in organizations the place printing networks are a necessity, however you’ll be able to find out how to take these steps on the Microsoft Security Response Center.

Source: Microsoft through Bleeping Computer, Forbes

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