CVE-2024-27807 – This vulnerability allows iOS/iPadOS apps to by... (How to Fix)

Q: What is the severity of CVE-2024-27807?

CVE-2024-27807 has a CVSS score of 4.3 (MEDIUM). This vulnerability allows iOS/iPadOS apps to bypass App Privacy Report logging, potentially hiding their data access activities from users. It affects iOS and iPadOS devices running versions before the patched releases. Users who haven't updated their devices are vulnerable to apps circumventing privacy monitoring.

📋 TL;DR

This vulnerability allows iOS/iPadOS apps to bypass App Privacy Report logging, potentially hiding their data access activities from users. It affects iOS and iPadOS devices running versions before the patched releases. Users who haven't updated their devices are vulnerable to apps circumventing privacy monitoring.

💻 Affected Systems

Products:

iOS
iPadOS

Versions: Versions before iOS 17.5, iPadOS 17.5, iOS 16.7.8, and iPadOS 16.7.8

Operating Systems: iOS, iPadOS

Default Config Vulnerable: ⚠️ Yes

Notes: All devices running affected iOS/iPadOS versions are vulnerable by default. No special configuration required.

📦 What is this software?

⚠️ Risk & Real-World Impact

🔴

Worst Case

Malicious apps could access sensitive user data (contacts, location, photos) without appearing in privacy reports, enabling covert data collection and exfiltration.

🟠

Likely Case

Apps could bypass privacy logging to access data they shouldn't, potentially violating user privacy expectations without detection.

🟢

If Mitigated

With proper controls and updates, the vulnerability is eliminated, restoring accurate privacy reporting.

🌐 Internet-Facing: LOW

🏢 Internal Only: MEDIUM

🎯 Exploit Status

Public PoC: ✅ No

Weaponized: UNKNOWN

Unauthenticated Exploit: ✅ No

Complexity: MEDIUM

Exploitation requires app installation/execution. No public exploit details available.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: iOS 17.5, iPadOS 17.5, iOS 16.7.8, iPadOS 16.7.8

Vendor Advisory: https://support.apple.com/en-us/HT214100

Restart Required: Yes

Instructions:

1. Open Settings app. 2. Tap General > Software Update. 3. Download and install available update. 4. Restart device when prompted.

🔧 Temporary Workarounds

Disable App Privacy Report

all

Turn off App Privacy Report feature to prevent misleading information, though this reduces privacy visibility.

Restrict App Installations

all

Only install apps from trusted sources (App Store) and review app permissions carefully.

🧯 If You Can't Patch

Monitor device for unusual behavior and review app permissions regularly.
Consider using mobile device management (MDM) solutions to enforce security policies.

🔍 How to Verify

Check if Vulnerable:

Check iOS/iPadOS version in Settings > General > About > Software Version.

Check Version:

Not applicable - check via device Settings UI.

Verify Fix Applied:

Verify version is iOS 17.5+, iPadOS 17.5+, iOS 16.7.8+, or iPadOS 16.7.8+.

📡 Detection & Monitoring

Log Indicators:

Unusual app behavior not appearing in privacy logs
Discrepancies between app activity and privacy reports

Network Indicators:

Unexpected network traffic from apps that shouldn't have network access

SIEM Query:

Not applicable - primarily client-side vulnerability.

📊 Metadata

CVE ID: CVE-2024-27807

CVSS v3 Score: 4.3 (MEDIUM)

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

Published: June 10, 2024

Last Updated: March 25, 2025

🔗 References

https://support.apple.com/en-us/HT214100 Vendor Advisory
https://support.apple.com/en-us/HT214101 Vendor Advisory
https://support.apple.com/kb/HT214100 Vendor Advisory
https://support.apple.com/kb/HT214101 Vendor Advisory
https://support.apple.com/en-us/HT214100 Vendor Advisory
https://support.apple.com/en-us/HT214101 Vendor Advisory
https://support.apple.com/kb/HT214100 Vendor Advisory
https://support.apple.com/kb/HT214101 Vendor Advisory

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