Security Researcher Reveals iOS Security Flaw, Gets Developer License Revoked

charliemillerSecurity researcher Charlie Miller revealed earlier today that he had found an exploit in Apple's iOS software that allows an App to run arbitrary code. Apple generally approves all code that is submitted to the AppStore and forbids the execution of un-approved code, but Miller discovered a way to bypass this restriction. Forbes writes:

Miller became suspicious of a possible flaw in the code signing of Apple’s mobile devices with the release of iOS 4.3 early last year.
...
The researcher soon dug up a bug that allowed him to expand that code-running exception to any application he’d like.

Beyond discovering the bug, Miller went a step further and actually had an App submitted to the App Store which took advantage of this bug. The App was approved and was able to perform as expected:

Using his method–and Miller has already planted a sleeper app in Apple’s App Store to demonstrate the trick–an app can phone home to a remote computer that downloads new unapproved commands onto the device and executes them at will, including stealing the user’s photos, reading contacts, making the phone vibrate or play sounds, or otherwise repurposing normal iOS app functions for malicious ends.

Shortly after the news broke, Apple revoked Miller's developer account, citing a breach of the developer agreement.

“This letter serves as notice of termination of the iOS Developer Program License Agreement…between you and Apple,” the email read. “Effective immediately.”

Miller plans to present his findings at the SysCan conference in Taiwan next week.

Popular Stories

iPhone SE 4 Vertical Camera Feature

iPhone SE 4 Rumored to Use Same Rear Chassis as iPhone 16

Friday July 19, 2024 7:16 am PDT by
Apple will adopt the same rear chassis manufacturing process for the iPhone SE 4 that it is using for the upcoming standard iPhone 16, claims a new rumor coming out of China. According to the Weibo-based leaker "Fixed Focus Digital," the backplate manufacturing process for the iPhone SE 4 is "exactly the same" as the standard model in Apple's upcoming iPhone 16 lineup, which is expected to...
iPhone 16 Pro Sizes Feature

iPhone 16 Series Is Just Two Months Away: Everything We Know

Monday July 15, 2024 4:44 am PDT by
Apple typically releases its new iPhone series around mid-September, which means we are about two months out from the launch of the iPhone 16. Like the iPhone 15 series, this year's lineup is expected to stick with four models – iPhone 16, iPhone 16 Plus, iPhone 16 Pro, and iPhone 16 Pro Max – although there are plenty of design differences and new features to take into account. To bring ...
bsod

Crowdstrike Says Global IT Outage Impacting Windows PCs, But Mac and Linux Hosts Not Affected

Friday July 19, 2024 3:12 am PDT by
A widespread system failure is currently affecting numerous Windows devices globally, causing critical boot failures across various industries, including banks, rail networks, airlines, retailers, broadcasters, healthcare, and many more sectors. The issue, manifesting as a Blue Screen of Death (BSOD), is preventing computers from starting up properly and forcing them into continuous recovery...
iphone 14 lineup

Cellebrite Unable to Unlock iPhones on iOS 17.4 or Later, Leak Reveals

Thursday July 18, 2024 4:18 am PDT by
Israel-based mobile forensics company Cellebrite is unable to unlock iPhones running iOS 17.4 or later, according to leaked documents verified by 404 Media. The documents provide a rare glimpse into the capabilities of the company's mobile forensics tools and highlight the ongoing security improvements in Apple's latest devices. The leaked "Cellebrite iOS Support Matrix" obtained by 404 Media...
Apple Watch Series 9

2024 Apple Watch Lineup: Key Changes We're Expecting

Tuesday July 16, 2024 7:59 am PDT by
Apple is seemingly planning a rework of the Apple Watch lineup for 2024, according to a range of reports from over the past year. Here's everything we know so far. Apple is expected to continue to offer three different Apple Watch models in five casing sizes, but the various display sizes will allegedly grow by up to 12% and the casings will get taller. Based on all of the latest rumors,...
tinypod apple watch

TinyPod Turns Your Apple Watch Into an iPod

Wednesday July 17, 2024 3:18 pm PDT by
If you have an old Apple Watch and you're not sure what to do with it, a new product called TinyPod might be the answer. Priced at $79, the TinyPod is a silicone case with a built-in scroll wheel that houses the Apple Watch chassis. When an Apple Watch is placed inside the TinyPod, the click wheel on the case is able to be used to scroll through the Apple Watch interface. The feature works...

Top Rated Comments

Fazzy Avatar
166 months ago
I guess he should have told apple about it instead of submitting that app
Score: 61 Votes (Like | Disagree)
miles01110 Avatar
166 months ago
Meanwhile Google is handing out bounties for stuff like this. Because why would you want to get (almost) free help from industry-leading professionals? Submitting it to the App Store probably wasn't the way to go, though.
Score: 43 Votes (Like | Disagree)
thewitt Avatar
166 months ago
It's one thing to find a security hole and professionally inform Apple, quite another to write an app to exploit it and announce you will tell the works how to do it in a conference in a week...

Charlie is a smart guy who makes some really stupid decisions.

Professional developers disclose issues in iOS to Apple through secure channels all the time without this media madness.
Score: 33 Votes (Like | Disagree)
ChazUK Avatar
166 months ago
https://twitter.com/#!/0xcharlie/status/133739410662494208

For the record, without a real app in the AppStore, people would say Apple wouldn't approve an app that took advantage of this flaw.

That pretty much explains why he submitted the app for approval.

I have no doubt that many would have said this wouldn't have got through if he simply revealed the flaw without submitting an app.
Score: 23 Votes (Like | Disagree)
iJanne Avatar
166 months ago
If you read the source article, the guy reported the bug to Apple a month ago.

----------

This makes Apple look pretty bad. And if he had submitted the bug what are the chances Apple would have responded in a timely manner if at all?

He submitted the bug to Apple on Oct 17 according to the source article.
Score: 22 Votes (Like | Disagree)
applebook Avatar
166 months ago
I wasn't aware that Google rewarded people for exploiting their security flaws without their consent. :rolleyes:

No company or person likes to be exploited. Miller should have revealed the findings instead of trying to take advantage of the flaw.
Score: 22 Votes (Like | Disagree)