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New Android lockscreen hack gives attackers full access to locked devices

Discussion in 'Android Phones' started by jheayahr, Sep 16, 2015.

  1. The hack involves dumping an extremely long string into the password field after swiping open the camera from a locked phone. Unless updated in the past few days, devices running 5.0 to 5.1.1 will choke on the unwieldy number of characters and unlock, even though the password is incorrect. From there, the attacker can do anything with the phone the rightful owner can do.

    The following video demonstrates the attack in action. The technique begins by adding a large number of characters to the emergency call window and then copying them to the Android clipboard. (Presumably, there are other ways besides the emergency number screen to buffer a sufficiently large number of characters.) The hacker then swipes open the camera from the locked phone, accesses the options menu, and pastes the characters into the resulting password prompt. Instead of returning an error message, vulnerable handsets unlock.

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    Fortunately, the vulnerability was introduced in version 5, so the number of affected handsets is only a small fraction of the overall Android user base. Vulnerable users who can't get an update or don't want to wait for one to become available can switch to a PIN or pattern-based lockscreen, neither of which is susceptible to the hack.
  2. XQZme

    XQZme Addict Established

    thanks for the information ts
    jheayahr likes this.
  3. No probs TS. If you have this just avoid using password locks
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