CVE-2023-41071 – This CVE-2023-41071 is a use-after-free vulnera... (How to Fix)

Q: What is the severity of CVE-2023-41071?

CVE-2023-41071 has a CVSS score of 7.8 (HIGH). This CVE-2023-41071 is a use-after-free vulnerability in Apple operating systems that allows an app to execute arbitrary code with kernel privileges. It affects multiple Apple platforms including iOS, iPadOS, tvOS, watchOS, and macOS. Successful exploitation gives attackers complete control over affected devices.

📋 TL;DR

This CVE-2023-41071 is a use-after-free vulnerability in Apple operating systems that allows an app to execute arbitrary code with kernel privileges. It affects multiple Apple platforms including iOS, iPadOS, tvOS, watchOS, and macOS. Successful exploitation gives attackers complete control over affected devices.

💻 Affected Systems

Products:

iOS
iPadOS
tvOS
watchOS
macOS

Versions: Versions prior to iOS 17, iPadOS 17, tvOS 17, watchOS 10, macOS Ventura 13.6

Operating Systems: Apple iOS, Apple iPadOS, Apple tvOS, Apple watchOS, Apple macOS

Default Config Vulnerable: ⚠️ Yes

Notes: All default configurations of affected Apple operating systems are vulnerable. The vulnerability exists in the kernel memory management subsystem.

📦 What is this software?

Ipados by Apple

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Iphone Os by Apple

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Macos by Apple

macOS is Apple's desktop and laptop operating system powering Mac computers used by millions of professionals, developers, creative professionals, and enterprise users worldwide. Built on a Unix foundation with the Darwin kernel and modern Cocoa frameworks, macOS delivers a seamless ecosystem integr...

Learn more about Macos →

Tvos by Apple

View all CVEs affecting Tvos →

Watchos by Apple

View all CVEs affecting Watchos →

⚠️ Risk & Real-World Impact

🔴

Worst Case

Complete device compromise with kernel-level privileges, allowing attackers to install persistent malware, steal all data, bypass security controls, and pivot to other systems.

🟠

Likely Case

Targeted attacks against specific users or organizations to gain full device control, data exfiltration, and surveillance capabilities.

🟢

If Mitigated

Limited impact with proper patch management and application sandboxing, though kernel-level vulnerabilities are particularly dangerous.

🌐 Internet-Facing: MEDIUM - Requires user interaction (app execution) but can be triggered through malicious apps from various sources.

🏢 Internal Only: HIGH - Internal threat actors or compromised internal apps could exploit this to gain kernel privileges and move laterally.

🎯 Exploit Status

Public PoC: ✅ No

Weaponized: UNKNOWN

Unauthenticated Exploit: ✅ No

Complexity: MEDIUM

Exploitation requires an attacker to get a malicious app installed and executed on the target device. The use-after-free vulnerability in kernel memory management can be leveraged for privilege escalation.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: iOS 17, iPadOS 17, tvOS 17, watchOS 10, macOS Ventura 13.6

Vendor Advisory: https://support.apple.com/en-us/HT213931

Restart Required: Yes

Instructions:

1. Backup device data. 2. Go to Settings > General > Software Update. 3. Download and install the latest update. 4. Restart device when prompted. For macOS: Apple menu > System Settings > General > Software Update.

🔧 Temporary Workarounds

Application Restriction

all

Restrict installation of apps to only those from trusted sources like the App Store

For iOS/iPadOS: Settings > Screen Time > Content & Privacy Restrictions > iTunes & App Store Purchases > Installing Apps > Don't Allow

Enhanced Monitoring

all

Monitor for unusual app behavior or privilege escalation attempts

🧯 If You Can't Patch

Implement strict application allowlisting to prevent unauthorized app execution
Segment affected devices from critical network resources and monitor for suspicious activity

🔍 How to Verify

Check if Vulnerable:

Check device version: iOS/iPadOS: Settings > General > About > Version; macOS: Apple menu > About This Mac > macOS version; tvOS: Settings > General > About > Version; watchOS: Watch app on iPhone > General > About > Version

Check Version:

iOS/iPadOS: sw_vers; macOS: sw_vers; tvOS/watchOS: Check in device settings

Verify Fix Applied:

Verify device is running iOS 17+, iPadOS 17+, tvOS 17+, watchOS 10+, or macOS Ventura 13.6+

📡 Detection & Monitoring

Log Indicators:

Kernel panic logs
Unexpected privilege escalation
Memory corruption warnings in system logs
Unusual app behavior or crashes

Network Indicators:

Unexpected outbound connections from Apple devices
Communication with known malicious domains

SIEM Query:

source="apple_system_logs" AND (event="kernel_panic" OR event="memory_corruption" OR message="use-after-free")

📊 Metadata

CVE ID: CVE-2023-41071

CVSS v3 Score: 7.8 (HIGH)

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

CWE: CWE-416

Published: September 27, 2023

Last Updated: November 4, 2025

🔗 References

http://seclists.org/fulldisclosure/2023/Oct/10 Mailing List,Third Party Advisory
http://seclists.org/fulldisclosure/2023/Oct/5 Mailing List,Third Party Advisory
http://seclists.org/fulldisclosure/2023/Oct/8
http://seclists.org/fulldisclosure/2023/Oct/9
https://support.apple.com/en-us/HT213931 Release Notes,Vendor Advisory
https://support.apple.com/en-us/HT213936 Release Notes,Vendor Advisory
https://support.apple.com/en-us/HT213937 Release Notes,Vendor Advisory
https://support.apple.com/en-us/HT213938 Release Notes,Vendor Advisory
http://seclists.org/fulldisclosure/2023/Oct/10 Mailing List,Third Party Advisory
http://seclists.org/fulldisclosure/2023/Oct/5 Mailing List,Third Party Advisory
http://seclists.org/fulldisclosure/2023/Oct/8
http://seclists.org/fulldisclosure/2023/Oct/9
https://support.apple.com/en-us/HT213931 Release Notes,Vendor Advisory
https://support.apple.com/en-us/HT213936 Release Notes,Vendor Advisory
https://support.apple.com/en-us/HT213937 Release Notes,Vendor Advisory
https://support.apple.com/en-us/HT213938 Release Notes,Vendor Advisory
https://support.apple.com/kb/HT213931
https://support.apple.com/kb/HT213936
https://support.apple.com/kb/HT213937
https://support.apple.com/kb/HT213938

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