Topics Tools Books & Guides Talk to Securafy

Knowledge Hub / IT Operations

IT Operations

A New iPhone Bug In HomeKit Could Brick Your Phone

A New iPhone Bug In HomeKit Could Brick Your Phone

Randy Hall By Randy Hall Updated Jul 2024 2 min read Share

Thank Trevor Spiniolas' sharp eyes if you own an iPhone.  The independent security researcher recently discovered a critical security flaw in iOS that impacts all version from 14.7 to 15.2.

If exploited, this flaw can turn your fancy phone into a very expensive paperweight, so it's one to take seriously.

Trevor discovered that by changing the name of a HomeKit device to a large string of characters, it would cause the iPhone to crash. In his case Trevor used a string half a million characters long for testing.

Unfortunately, there's no easy way out if this should happen to a user because of course the new device name is backed up to the iCloud. So if the user tried to restore the iPhone it would pull the relevant information from the Cloud, hit the renamed device, and trigger the error again.

Spiniolas has publicly disclosed his findings, so Apple is aware of the issue.  Initially the company promised a fix before the end of 2021 but they've since come back with a revised timeframe of "early 2022." For now, if you run afoul of this issue you don't have many good options.

Spinolas recommends the following steps for impacted users:

  • Restore the affected device from Recovery or DFU Mode
  • Set up the device as normal but do NOT sign back into the iCloud account
  • After setup is finished, sign into iCloud from settings. Immediately after doing so disable the switch labeled "Home." The device and iCloud should now function again without access to "Home" data.

It's a bit of a process with more hoop jumping than many people will care for. However, the steps outlined above will get the job done and give you your phone back.  Here's hoping Apple doesn't hesitate in terms of the fix.

Join The Conversation

Have a question or perspective on this topic? Add it below.

Randy Hall

About The Author

Randy Hall · CEO & Founder

Randy Hall is the CEO and Founder of Securafy, with decades of experience helping organizations make smarter, safer decisions about technology.

A frequent speaker and instructor at national IT events, Randy has advised thousands of organizations, from startups and SMBs to large enterprises and U.S. government entities, on secure, practical technology adoption. He writes about the decisions business leaders are often expected to make without enough context, including cybersecurity, compliance, AI, cyber insurance, IT strategy, and business resilience.

Outside the office, you’ll often find Randy on Lake Erie enjoying time on his 38-foot Chris-Craft.

Writes about: Cybersecurity strategy, compliance, AI security, business resilience, cyber insurance, SMB risk, IT leadership

More From This Author →

Get Practical Cybersecurity Field Notes

Monthly cybersecurity, compliance, and IT strategy updates from Securafy, written for business owners who need clear next steps.

  • Practical security tips from our Cyber Security Drip series
  • The Securafy Times, our monthly roundup on compliance and IT strategy
  • Occasional updates on new tools, guides, and research
  • No spam — unsubscribe anytime