Mac Pro with OS X 10.9.5: Firmware Password Prompt Causes Complete System Freeze

Originator:sephirothfanatic
Number:rdar://20837722 Date Originated:May 06, 2015
Status:Open Resolved:
Product:OS X Product Version:OS X Mavericks
Classification:Security; Crash/Hang/Data Loss Reproducible:Always
 
Summary:
After setting a firmware password, using the Firmware Password Utility inside the Recovery HD, the password prompt hangs.

Steps to Reproduce:
1. Use Command+R to boot into Recovery HD.
2. Use Firmware Password Utility to set Firmware Password.
3. Restart computer.
4. Use Command+R to boot into Recovery HD; firmware password prompt hangs.

Expected Results:
The firmware password prompt should not cause the computer to freeze.

Actual Results:
The firmware password prompt causes the entire computer to freeze, no keyboard or mouse input occurs and the computer must be hard shutdown by holding the power button.

Version:
Mac Pro Mid 2010 (MacPro5,1) Boot ROM Version MP51.007F.B03

Notes:
I haven't tested OS X Yosemite or OS X El Capitan to see if either of these Operating Systems have this bug.

Configuration:
The firmware password prompt will only work if the Option key is held down.  Trying to use other shortcuts like Shift for Safe Mode or Command+R results in the computer booting normally, or the firmware password prompt freezes respectively.

Attachments:
NONE

Comments


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