Android Phones Exposed By Viber App Flaw?

A popular app is making Android phones vulnerable to pass lock bypass.

Bkav Internet Security Corporation estimates that up to 50 million users of Samsung, Sony, and HTC Android-enabled phones are at risk from a flaw in the Viber app which can allow an attacker to bypass the lock screen and again access to the phone.

The security company says “[e]xploiting Viber to bypass lock screen of Android smartphones is simple, though it might slightly differ among different phones. Through a few actions on Viber new message popups, combining with some tricks like using victim’s notification bar, sending other Viber messages, bad guy can gain full access to the phone and use any apps, features, etc. on the phone as its authorized user.”

“The way Viber handles to popup its messages on smartphones’ lock screen is unusual, resulting in its failure to control programming logic, causing the flaw to appear,” said Mr. Nguyen Minh Duc, Director of Bkav’s Security Division.

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