iOS 17.5 Includes These 15 Security Fixes, But One Causes Another Bug

iOS 17.5 and iPadOS 17.5 include 15 security patches for the iPhone and iPad, according to a recently-published Apple support document, but unfortunately one of the patches has led to a software bug affecting alternative app marketplaces.

iOS 17
According to Mysk, a security patch related to the MarketplaceKit framework has resulted in a bug that prevents iPhone users in the EU from reinstalling an alternative app marketplace like AltStore if they happen to delete the app after initially installing it. Apple will likely fix this issue in a subsequent update, such as iOS 17.5.1.

In related news, one security researcher has complained that the iOS kernel vulnerability they discovered was not eligible for payment under the Apple Security Bounty program. It is listed in the iOS 17.5 security fixes below under "AppleAVD."

Apple's full list of security patches included in iOS 17.5 and iPadOS 17.5:

AppleAVD

Available for: iPhone XS and later, iPad Pro 12.9-inch 2nd generation and later, iPad Pro 10.5-inch, iPad Pro 11-inch 1st generation and later, iPad Air 3rd generation and later, iPad 6th generation and later, and iPad mini 5th generation and later

Impact: An app may be able to execute arbitrary code with kernel privileges

Description: The issue was addressed with improved memory handling.

CVE-2024-27804: Meysam Firouzi (@R00tkitSMM)

AppleMobileFileIntegrity

Available for: iPhone XS and later, iPad Pro 12.9-inch 2nd generation and later, iPad Pro 10.5-inch, iPad Pro 11-inch 1st generation and later, iPad Air 3rd generation and later, iPad 6th generation and later, and iPad mini 5th generation and later

Impact: An attacker may be able to access user data

Description: A logic issue was addressed with improved checks.

CVE-2024-27816: Mickey Jin (@patch1t)

AVEVideoEncoder

Available for: iPhone XS and later, iPad Pro 12.9-inch 2nd generation and later, iPad Pro 10.5-inch, iPad Pro 11-inch 1st generation and later, iPad Air 3rd generation and later, iPad 6th generation and later, and iPad mini 5th generation and later

Impact: An app may be able to disclose kernel memory

Description: The issue was addressed with improved memory handling.

CVE-2024-27841: an anonymous researcher

Find My

Available for: iPhone XS and later, iPad Pro 12.9-inch 2nd generation and later, iPad Pro 10.5-inch, iPad Pro 11-inch 1st generation and later, iPad Air 3rd generation and later, iPad 6th generation and later, and iPad mini 5th generation and later

Impact: A malicious application may be able to determine a user's current location

Description: A privacy issue was addressed by moving sensitive data to a more secure location.

CVE-2024-27839: Alexander Heinrich, SEEMOO, TU Darmstadt (@Sn0wfreeze), and Shai Mishali (@freak4pc)

Kernel

Available for: iPhone XS and later, iPad Pro 12.9-inch 2nd generation and later, iPad Pro 10.5-inch, iPad Pro 11-inch 1st generation and later, iPad Air 3rd generation and later, iPad 6th generation and later, and iPad mini 5th generation and later

Impact: An attacker may be able to cause unexpected app termination or arbitrary code execution

Description: The issue was addressed with improved memory handling.

CVE-2024-27818: pattern-f (@pattern_F_) of Ant Security Light-Year Lab

Libsystem

Available for: iPhone XS and later, iPad Pro 12.9-inch 2nd generation and later, iPad Pro 10.5-inch, iPad Pro 11-inch 1st generation and later, iPad Air 3rd generation and later, iPad 6th generation and later, and iPad mini 5th generation and later

Impact: An app may be able to access protected user data

Description: A permissions issue was addressed by removing vulnerable code and adding additional checks.

CVE-2023-42893: an anonymous researcher

Maps

Available for: iPhone XS and later, iPad Pro 12.9-inch 2nd generation and later, iPad Pro 10.5-inch, iPad Pro 11-inch 1st generation and later, iPad Air 3rd generation and later, iPad 6th generation and later, and iPad mini 5th generation and later

Impact: An app may be able to read sensitive location information

Description: A path handling issue was addressed with improved validation.

CVE-2024-27810: LFY@secsys of Fudan University

MarketplaceKit

Available for: iPhone XS and later

Impact: A maliciously crafted webpage may be able to distribute a script that tracks users on other webpages

Description: A privacy issue was addressed with improved client ID handling for alternative app marketplaces.

CVE-2024-27852: Talal Haj Bakry and Tommy Mysk of Mysk Inc. (@mysk_co)

Notes

Available for: iPhone XS and later, iPad Pro 12.9-inch 2nd generation and later, iPad Pro 10.5-inch, iPad Pro 11-inch 1st generation and later, iPad Air 3rd generation and later, iPad 6th generation and later, and iPad mini 5th generation and later

Impact: An attacker with physical access to an iOS device may be able to access notes from the lock screen

Description: This issue was addressed through improved state management.

CVE-2024-27835: Andr.Ess

RemoteViewServices

Available for: iPhone XS and later, iPad Pro 12.9-inch 2nd generation and later, iPad Pro 10.5-inch, iPad Pro 11-inch 1st generation and later, iPad Air 3rd generation and later, iPad 6th generation and later, and iPad mini 5th generation and later

Impact: An attacker may be able to access user data

Description: A logic issue was addressed with improved checks.

CVE-2024-27816: Mickey Jin (@patch1t)

Screenshots

Available for: iPhone XS and later, iPad Pro 12.9-inch 2nd generation and later, iPad Pro 10.5-inch, iPad Pro 11-inch 1st generation and later, iPad Air 3rd generation and later, iPad 6th generation and later, and iPad mini 5th generation and later

Impact: An attacker with physical access may be able to share items from the lock screen

Description: A permissions issue was addressed with improved validation.

CVE-2024-27803: an anonymous researcher

Shortcuts

Available for: iPhone XS and later, iPad Pro 12.9-inch 2nd generation and later, iPad Pro 10.5-inch, iPad Pro 11-inch 1st generation and later, iPad Air 3rd generation and later, iPad 6th generation and later, and iPad mini 5th generation and later

Impact: A shortcut may output sensitive user data without consent

Description: A path handling issue was addressed with improved validation.

CVE-2024-27821: Kirin (@Pwnrin), zbleet, and Csaba Fitzl (@theevilbit) of Kandji

Sync Services

Available for: iPhone XS and later, iPad Pro 12.9-inch 2nd generation and later, iPad Pro 10.5-inch, iPad Pro 11-inch 1st generation and later, iPad Air 3rd generation and later, iPad 6th generation and later, and iPad mini 5th generation and later

Impact: An app may be able to bypass Privacy preferences

Description: This issue was addressed with improved checks

CVE-2024-27847: Mickey Jin (@patch1t)

Voice Control

Available for: iPhone XS and later, iPad Pro 12.9-inch 2nd generation and later, iPad Pro 10.5-inch, iPad Pro 11-inch 1st generation and later, iPad Air 3rd generation and later, iPad 6th generation and later, and iPad mini 5th generation and later

Impact: An attacker may be able to elevate privileges

Description: The issue was addressed with improved checks.

CVE-2024-27796: ajajfxhj

WebKit

Available for: iPhone XS and later, iPad Pro 12.9-inch 2nd generation and later, iPad Pro 10.5-inch, iPad Pro 11-inch 1st generation and later, iPad Air 3rd generation and later, iPad 6th generation and later, and iPad mini 5th generation and later

Impact: An attacker with arbitrary read and write capability may be able to bypass Pointer Authentication

Description: The issue was addressed with improved checks.

WebKit Bugzilla: 272750
CVE-2024-27834: Manfred Paul (@_manfp) working with Trend Micro's Zero Day Initiative

Apple released iOS 17.5 and iPadOS 17.5 on Monday following around six weeks of beta testing.

Related Forums: iOS 17, iPadOS 17

Popular Stories

iPhone 17 Pro Dark Blue and Orange

When Is iPhone 17 Coming Out?

Thursday July 24, 2025 9:11 am PDT by
Apple's iPhone 17 series is expected to debut in September 2025. This release follows Apple's recent trend of introducing new iPhone models annually in the fall. To unveil the iPhone 17, iPhone 17 Air, iPhone 17 Pro, and iPhone 17 Pro Max, Apple is expected to hold its annual iPhone announcement event during the week of September 8, 2025, with September 9 or 10 emerging as the most likely...
iPhone 17 Pro on Desk Centered 1

iPhone 17 Pro Launching in Two Months With These 16 New Features

Saturday July 26, 2025 5:50 am PDT by
Apple's iPhone 17 Pro and iPhone 17 Pro Max should launch in late September, and there are plenty of rumors about the devices. Below, we recap key changes rumored for the iPhone 17 Pro models, as of July 2025:Aluminum frame: iPhone 17 Pro models are rumored to have an aluminum frame, whereas the iPhone 15 Pro and iPhone 16 Pro models have a titanium frame, and the iPhone X through iPhone 14...
iPhone 17 Pro on Desk Centered 1

Tipster: iPhone 17 Pro to Feature 8x Zoom, Pro Camera App, and More

Sunday July 27, 2025 7:35 am PDT by
Apple's upcoming iPhone 17 Pro models will have several new camera-related features, according to an anonymous tipster who contacted MacRumors today. The tipster claimed to be familiar with an iPhone 17 Pro commercial that is allegedly being produced by a film company that has publicly listed Apple as one of its clients. MacRumors has not independently confirmed any of the information shared ...
Apple Watch Ultra 2 Complications

Apple Watch Ultra 3: What to Expect

Thursday July 24, 2025 7:08 am PDT by
The long wait for an Apple Watch Ultra 3 is nearly over, and a handful of new features and changes have been rumored for the device. Below, we recap what to expect from the Apple Watch Ultra 3:Satellite connectivity for sending and receiving text messages when Wi-Fi and cellular coverage is unavailable 5G support, up from LTE on the Apple Watch Ultra 2 Likely a wide-angle OLED display that ...
Apple Partridge Creek

Apple Store in Michigan Permanently Closing Next Month

Saturday July 26, 2025 1:51 pm PDT by
Earlier this month, MacRumors was first to report that Apple was planning to permanently close its Partridge Creek store, just outside of Detroit, Michigan, and now the company has announced a closure date for the location. Apple Partridge Creek Apple Partridge Creek's final day of business will be Saturday, August 16, with the store set to close for good at 8 p.m. local time that day. All of ...
iOS 18

Apple Shares iOS 18.6 Release Notes

Thursday July 24, 2025 6:33 am PDT by
While the focus is now on iOS 26, there is still an iOS 18.6 update incoming. As noted by Aaron Zollo, Apple on Wednesday re-labeled iOS 18.6 Beta 4 as simply iOS 18.6, meaning that it is the Release Candidate version. This change effectively confirms that the update will be released to the public next week. Alongside the new label, Apple shared release notes for iOS 18.6, which is a...
iPhone 17 Colors

All 15 New iPhone 17 and iPhone 17 Pro Colors Leaked

Friday July 25, 2025 6:20 am PDT by
We may finally have a definitive list of all color options for the iPhone 17 series, ahead of the devices launching in September. MacRumors concept In a Macworld report this month, Filipe Espósito said he obtained an "internal document" that allegedly reveals all of the color options for the upcoming iPhone 17, iPhone 17 Air, iPhone 17 Pro, and iPhone 17 Pro Max models. The report...
iPhone 17 Pro on Desk Centered 1

iPhone 17 Pro Launching in Two Months With These 16 New Features

Tuesday July 22, 2025 5:00 pm PDT by
Apple's iPhone 17 Pro and iPhone 17 Pro Max are less than two months away, and there are plenty of rumors about the devices. Below, we recap key changes rumored for the iPhone 17 Pro models, as of July 2025:Aluminum frame: iPhone 17 Pro models are rumored to have an aluminum frame, whereas the iPhone 15 Pro and iPhone 16 Pro models have a titanium frame, and the iPhone X through iPhone 14...

Top Rated Comments

Tony_YYZ Avatar
16 months ago

Who would be positive about a bug that worsens the user experience in an optional system feature?
Some folks on here really don’t want others to have the ability to install whatever they want on their own phones. Like it personally offends them and affects their lives somehow.
Score: 21 Votes (Like | Disagree)
jdavid_rp Avatar
16 months ago

some call it a bug, one might call it a feature. a great one, one might say.
Who would be positive about a bug that worsens the user experience in an optional system feature?
Score: 13 Votes (Like | Disagree)
Havalo Avatar
16 months ago
Those boys at NSO and other three acronym agencies aren’t going to be too happy that Apple has patched them… ?

Cat and mouse game continues…
Score: 10 Votes (Like | Disagree)
hagar Avatar
16 months ago
I have installed my first AltStore (SetApp Mobile - in beta). Works great. Very intuitive, no dramatic warnings by Apple, everything works as expected.

The only thing is that you get a warning when trying to install the store. You first need to approve this manually in Settings. For each developer.

Otherwise there’s no difference with App Store apps. Curious how smooth app updates will work.
Score: 9 Votes (Like | Disagree)
bradman83 Avatar
16 months ago
Apple after accidentally causing glitches in alternate app marketplaces
Score: 8 Votes (Like | Disagree)
Edsel Avatar
16 months ago
Reading about these 21st century security updates always has me yearning for 19th century parchment paper, quill pens and daguerreotype camera.
Score: 8 Votes (Like | Disagree)