An Android security bug would let them unlock your phone just by changing the SIM card

A fault present in the system Android allows you to unlock a smartphone just by changing the SIM cardsince the error gives all the security screens as completed when starting the mobile, after blocking the PIN code and entering the PUK code.

As detailed by security expert David Schütz, who discovered this Android vulnerability through his own Google Pixel 6, to unlock the phone it is necessary to change the SIM of the smartphone for another SIM whose PUK code is known.

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In this sense, the error starts when you try start mobile phone after having changed sim cards. After the wrong PIN code has been entered three times, it continues entering the PUK code. After that, a new PIN is chosen and the phone automatically displays the home screen.

“It’s the most shocking vulnerability what I have found so farexplained Schütz, who warns that it is especially dangerous given that with physical access to the mobile, anyone could unlock it without knowing passwords and jumping biometric recognition barriers.

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In addition, after carrying out this process several times on his smartphone, the security expert assures that he tested this pattern on other Google Pixel models where the same thing happened again.

However, this vulnerability CVE-2022-20465 has already been corrected in the Android November security patch. In this sense, as reported by Google, what happened was that when entering the PUK code, the system understood that the security screens behind it had been completed. Therefore, it skipping the fingerprint, pattern or password to unlock the phone.

Source: Elcomercio

James

I have worked as a journalist for over 10 years and have written for various news outlets. I currently work as an author at 24 News Recorder, mostly covering entertainment news. I have a keen interest in the industry and enjoy writing about the latest news and gossip. I am also a member of the National Association of Journalists.