macOS Keychain Security Flaw Discovered by Researcher, but Details Not Shared With Apple Over Bug Bounty Protest

German security researcher Linus Henze this week discovered a new zero-day macOS vulnerability dubbed "KeySteal," which, as demoed in the video below, can be used to get to all of the sensitive data stored in the Keychain app.

Henze appears to use a malicious app to extract data from the Mac's Keychain app without the need for administrator access or an administrator password. It can get passwords and other information from Keychain, as well as passwords and details for other macOS users.


Henze has not shared the details of this exploit with Apple and says that he won't release it because Apple has no bug bounty program available for macOS. "So blame them," Henze writes in the video's description. In a statement to Forbes, Henze clarified his position, and said that discovering vulnerabilities takes time.

"Finding vulnerabilities like this one takes time, and I just think that paying researchers is the right thing to do because we're helping Apple to make their product more secure."

Apple has a reward program for iOS that provides money to those who discover bugs, but there is no similar payment system for macOS bugs.

According to German site Heise Online, which spoke to Henze, the exploit allows access to Mac Keychain items but not information stored in iCloud. Keychain is also required to be unlocked, something that happens by default when a user logs in to their account on a Mac.

applekeychain
Keychain can be locked by opening up the Keychain app, but an admin password then needs to be entered whenever an application needs to access Keychain, which can be inconvenient.

Apple's security team has reached out to Henze, according to ZDNet, but he has continued to refuse to provide additional detail unless they provide a bug bounty program for macOS. "Even if it looks like I'm doing this just for money, this is not my motivation at all in this case," said Henze. "My motivation is to get Apple to create a bug bounty program. I think that this is the best for both Apple and Researchers."

This isn't the first Keychain-related vulnerability discovered in macOS. Security researcher Patrick Wardle demoed a similar vulnerability in 2017, which has been patched.

Top Rated Comments

Scottsoapbox Avatar
43 months ago
How does Apple not have a bug bounty program? Did they start believing their own marketing on Mac OS?
Score: 66 Votes (Like | Disagree)
Goompa Avatar
43 months ago
It doesn’t surprise me. It’s been long time since Apple seemed to care about macOS.

I’m happy for the researcher. Let’s put some pressure on the giant.
Score: 45 Votes (Like | Disagree)
AngerDanger Avatar
43 months ago
Thank god! It was so time-consuming having to double FaceTime call people and wait for them to casually list their passwords as part of natural conversation.
Score: 34 Votes (Like | Disagree)
CE3 Avatar
43 months ago
I understand that finding flaws isn't always an easy thing and can take highly educated/skilled people lots of time to find things like this however no one is forcing this guy to do it.

This sounds a bit like extortion to me.
Extortion implies that not informing developers of bugs is illegal, which it isn’t of course. Apple has likely “reached out” to offer a reward, but he says his motivation is to use this as an opportunity to get a reward program in place for everyone. Good for him. it will probably happen now.

Yes, no one forced him to find this vulnerability, but if you’re a macOS user you should be thankful that he did.
Score: 29 Votes (Like | Disagree)
displaced Avatar
43 months ago
Hmm.

Are Bug Bounty rewards a good idea which provide incentive and reward to bug researchers? Yes. Should Apple have one for macOS? Most likely.

Should a researcher withhold details on a discovered bug as a protest about the lack of a bounty? I don't think so. It seems both unprofessional and dangerous.
Score: 28 Votes (Like | Disagree)
lostngone Avatar
43 months ago
I understand that finding flaws isn't always an easy thing and can take highly educated/skilled people lots of time to find things like this however no one is forcing this guy to do it.

This sounds a bit like extortion to me.
Score: 25 Votes (Like | Disagree)

Popular Stories

anker 563 dock ports

Anker's Latest USB-C Docking Station Brings Triple-Display Support to M1 Macs

Wednesday May 18, 2022 7:06 am PDT by
While Apple's early M1-based Macs can only officially support a single external display, there are ways around the limitation. Anker is launching a new 10-in-1 USB-C docking station today which delivers just that. The Anker 563 USB-C dock includes two HDMI ports and a DisplayPort port, and it leverages DisplayLink to carry multiple video signals over a single connection. Given that this hub...
Prosser Series 8 3

Apple Watch Series 8 Rumored to Feature New Design With Flat Display

Wednesday May 18, 2022 6:21 am PDT by
The Apple Watch Series 8 could feature an all-new design with a flat display, according to the leaker known as "ShrimpApplePro." In his latest video on the YouTube channel Front Page Tech, Jon Prosser highlighted information from ShrimpApplePro that suggests the Apple Watch Series 8 could feature a flat display in what seems to be a design originally rumored for the Apple Watch Series 7. ...
apple ar headset concept 1

Apple's Headset Said to Feature 14 Cameras Enabling Lifelike Avatars, Jony Ive Has Remained Involved With Design

Friday May 20, 2022 6:50 am PDT by
Earlier this week, The Information's Wayne Ma outlined struggles that Apple has faced during the development of its long-rumored AR/VR headset. Now, in a follow-up report, he has shared several additional details about the wearable device. Apple headset render created by Ian Zelbo based on The Information reporting For starters, one of the headset's marquee features is said to be lifelike...
apple data auction iphone privacy ad

Apple Highlights iPhone's Latest Privacy Features in New 'Data Auction' Ad

Wednesday May 18, 2022 9:00 am PDT by
Apple today shared a new ad highlighting iPhone privacy features like App Tracking Transparency and Mail Privacy Protection that are designed to give users more transparency and control when it comes to their personal data being collected. The ad revolves around a young woman named Ellie who discovers that her personal data is being sold at an auction house, with bids being placed on her...
apple ar headset concept 2

Apple's AR/VR Headset Nearing Completion as Board Gets Demo

Thursday May 19, 2022 9:52 am PDT by
Apple last week demonstrated its upcoming AR/VR headset to Apple board members, indicating that the device is in an advanced stage of development and could see a debut in the not too distant future, reports Bloomberg. Apple has also ramped up development of the software that runs on the headset, with that software expected to be called "RealityOS," or rOS for short. Render via designer Ian ...