Unpatched Zero-day  - Unpatched Zero day - New Microsoft Unpatched Zero-day Bug Exposed In Twitter With PoC

New Microsoft unpatched Zero-day bug exposed in online again along with proof-of-concept(PoC) by the same security researcher who has previously leaked another critical zero-day in .

Previously exposed Windows Zero-day vulnerability exploit online that discovered in Microsoft Windows Task Scheduler.

Twitter name SandboxEscaper, A security researcher famous for leaking Zero-day bugs online along with and now she exposed second Microsoft Zero-day bug.

Also she said, “Not the same bug I posted a while back, this doesn’t write garbage to files but actually deletes them.. meaning you can delete application dll’s and hope they go look for them in user write-able locations. Or delete stuff used by system services c:windowstemp and hijack them.”

This Vulnerability referred as a Deletebug and it allows non-admins to delete any file by abusing a new service not checking permissions again.

who have analyzed this bug believes that once ‘s deletebug.exe deletes pci.sys on the computer, you can no longer restart it so make sure you test on a virtual machine that you can revert to a state before you ran deletebug.exe.

 Co-founder of 0patch said, This Unpatched Zero-day exactly affecting data sharing service (dssvc.dll)which is only presented in exist on Windows / Server 2016 but not on Windows 7 And Windows 8.

“The Internet seems to know that it crashes a lot and it describes itself as “Provides brokering between applications.”

Since this Unpatched Zero-day bug published along with the PoC helps for attackers who can use this PoC to delete OS files and replace the malicious files.

In this case, 0patch released a micropatch candidate for this Unpatched Zero-day, currently working on fully updated Windows 10 1803 that help to stop exploiting the unpatched windows zero-day bugs untill it gets patched by Microsoft.

We hope Microsoft already aware of this bug and possibly the patch will be released in next Microsoft Security updates. Kindly Stay tuned, we will update about this bug reports frequently.





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