Difference between revisions of "Lock screen"

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(Undo revision 37284 by IAdam1n (talk) Turned out to be fake -.-)
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The lock screen is what you see once you wake a device up. It tells you to slide from left to right to unlock your device, followed by an optional passcode prompt. Several methods of bypassing the passcode prompt have surfaced multiple times in its lifetime.
The lock screen shall prevent unauthorized access to the device.
 
   
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* [http://www.engadget.com/2010/10/25/ios-4-1-glitch-lets-you-bypass-lock-screen-to-access-phone-app/ Method for iOS 4.1]
It is however vulnerable depending on iOS version:
 
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* [http://www.theverge.com/2013/2/14/3987830/ios-6-1-security-flaw-lets-anyone-make-calls-from-your-iphone Method for iOS 6.1]
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* [http://arstechnica.com/apple/2013/03/one-day-after-ios-6-1-3-a-new-iphone-lock-screen-bug-emerges/ Method for iOS 6.1.3]
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* [http://www.forbes.com/sites/andygreenberg/2013/09/19/ios-7-bug-lets-anyone-bypass-iphones-lockscreen-to-hijack-photos-email-or-twitter/ Method for iOS 7.0(.1)]
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* [http://www.idownloadblog.com/2013/09/27/ios-7-0-2-lock-screen-vunerability/ Method for iOS 7.0.2]
   
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== Bruteforcing ==
* 4.1 vulnerability detailed on [http://www.engadget.com/2010/10/25/ios-4-1-glitch-lets-you-bypass-lock-screen-to-access-phone-app/ www.engadget.com]
 
* 6.1 vulnerability detailed on [http://www.theverge.com/2013/2/14/3987830/ios-6-1-security-flaw-lets-anyone-make-calls-from-your-iphone www.theverge.com]
 
* 6.1.3 vulnerability detailed on [http://arstechnica.com/apple/2013/03/one-day-after-ios-6-1-3-a-new-iphone-lock-screen-bug-emerges/ arstechnica.com]
 
* 7.0/7.0.1 vulnerability detailed on [http://www.forbes.com/sites/andygreenberg/2013/09/19/ios-7-bug-lets-anyone-bypass-iphones-lockscreen-to-hijack-photos-email-or-twitter/ www.forbes.com]
 
* 7.0.2 vulnerability detailed on [http://www.idownloadblog.com/2013/09/27/ios-7-0-2-lock-screen-vunerability/ www.idownloadblog.com]
 
   
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In general the lock screen can be circumvented with any device where a jailbreak is available as shown on [http://iphoneblogr.com/2012/07/how-to-unlock-your-disabled-iphone-and-recover-your-passcode-disabled-iphone-passcode-recovery-iphone-ipod-touch-ipad/ www.iphoneblogr.com].
 
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The passcode can also be [http://iphoneblogr.com/2012/07/how-to-unlock-your-disabled-iphone-and-recover-your-passcode-disabled-iphone-passcode-recovery-iphone-ipod-touch-ipad/ brute-forced] if the device is jailbroken, and the passcode is simple (four digits). It takes under 20 minutes to crack a 4 digit numeric passcode, this is the standard passcode for many users.
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{| class="wikitable" style="font-size: smaller; text-align: center;"
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|-
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! Passcode length
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! Compexity
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! Time
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|-
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| 4 digits
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| numeric (0-9)
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| 18 minutes
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|-
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| 4 digits
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| alphanumeric (a-z & 0-9)
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| 19 days
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|-
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| 6 digits
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| alphanumeric (a-z & 0-9)
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| 196 years
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|-
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| 8 digits
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| alphanumeric (a-z & 0-9)
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| 755 thousand years
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|-
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| 8 digits
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| alphanumeric, complex (a-z & special characters & 0-9)
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| 27 million years
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|-
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|}
   
 
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Latest revision as of 00:06, 9 November 2013

The lock screen is what you see once you wake a device up. It tells you to slide from left to right to unlock your device, followed by an optional passcode prompt. Several methods of bypassing the passcode prompt have surfaced multiple times in its lifetime.

Bruteforcing

The passcode can also be brute-forced if the device is jailbroken, and the passcode is simple (four digits). It takes under 20 minutes to crack a 4 digit numeric passcode, this is the standard passcode for many users.

Passcode length Compexity Time
4 digits numeric (0-9) 18 minutes
4 digits alphanumeric (a-z & 0-9) 19 days
6 digits alphanumeric (a-z & 0-9) 196 years
8 digits alphanumeric (a-z & 0-9) 755 thousand years
8 digits alphanumeric, complex (a-z & special characters & 0-9) 27 million years
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