Google Pixel vulnerability permits unhealthy actors to undo Markup screenshot edits and redactions

When Google started rolling out Android’s , the corporate addressed a “Excessive” severity vulnerability involving the Pixel’s Markup screenshot instrument. Over the weekend, and , the reverse engineers who found CVE-2023-21036, shared extra details about the safety flaw, revealing Pixel customers are nonetheless vulnerable to their older pictures being compromised as a result of nature of Google’s oversight.

In brief, the “aCropalypse” flaw allowed somebody to take a PNG screenshot cropped in Markup and undo not less than a number of the edits within the picture. It’s simple to think about eventualities the place a nasty actor might abuse that functionality. As an illustration, if a Pixel proprietor used Markup to redact a picture that included delicate details about themselves, somebody might exploit the flaw to disclose that data. You could find the technical particulars on .

In accordance with Buchanan, the flaw has existed for about 5 years, coinciding with the discharge of Markup alongside . And therein lies the issue. Whereas March’s safety patch will stop Markup from compromising future pictures, some screenshots Pixel customers could have shared up to now are nonetheless in danger.

It’s arduous to say how involved Pixel customers needs to be in regards to the flaw. In accordance with a forthcoming Aarons and Buchanan shared with and , some web sites, together with Twitter, course of pictures in such a manner that somebody couldn’t exploit the vulnerability to reverse edit a screenshot or picture. Customers on different platforms aren’t so fortunate. Aarons and Buchanan particularly establish Discord, noting the chat app didn’t patch out the exploit till its current January seventeenth replace. In the meanwhile, it’s unclear if pictures shared on different social media and chat apps had been left equally susceptible.

Google didn’t instantly reply to Engadget’s request for remark and extra data. The March safety replace is at present obtainable on the Pixel 4a, 5a, 7 and seven Professional, that means Markup can nonetheless produce susceptible pictures on some Pixel units. It’s unclear when Google will push the patch to different Pixel units. When you personal a Pixel telephone with out the patch, keep away from utilizing Markup to share delicate pictures.

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