Apple iOS and iPadOS Kernel Use-After-Free Vulnerability (CVE-2023-41974) Technical Advisory
Executive & SecOps Summary
SECOPS ASSESSMENTApple devices running iOS and iPadOS versions prior to 17, or iOS and iPadOS versions prior to 15.8.7
A local malicious application can exploit a Use-After-Free vulnerability to execute arbitrary code with kernel privileges, leading to complete system compromise
Immediately apply official Apple software updates to upgrade to iOS 17, iOS 15.8.7, or later versions
Affected Products & Version Scope
Remediation & Live Workaround Commands
PATCH & WORKAROUND1. Official Patch & Version Upgrade Commands
Perform an over-the-air (OTA) update directly on the device. For enterprise environments managed via MDM, deploy the following OS update command payload:
<!-- MDM OS Update Command Payload Example -->
<dict>
<key>RequestType</key>
<string>ScheduleOSUpdate</string>
<key>Updates</key>
<array>
<dict>
<key>ProductKey</key>
<string>iOS17_Latest</string>
<key>InstallAction</key>
<string>Default</string>
</dict>
</array>
</dict>2. Temporary Workaround & Hardening Configuration
If immediate patching is not feasible, restrict the installation of untrusted enterprise applications and enforce strict MDM profiles to minimize the attack surface.
# Restrict enterprise app trust and profile installation via MDM configuration
security profiles install -type enterprise -restrictAppInstallation true3. Log Audit & IoC Verification Commands
Verify the current OS version of connected iOS devices to identify vulnerable assets.
# Query the OS version of a connected iOS device using ideviceinfo
ideviceinfo | grep -E 'ProductVersion|BuildVersion'Block Exploits Instantly with Managed Virtual Patching Rules
Can't patch production immediately? Deploy managed WAF rules at the edge to intercept RCE, SQLi, and deserialization payloads before they hit your origin server.
Technical Root Cause & Exploitation Mechanics
1. Vulnerability Overview & Root Cause
This vulnerability (CVE-2023-41974) is a Use-After-Free (UAF) flaw residing in the memory management component of the Apple iOS and iPadOS kernel. It occurs when the system fails to properly clear or invalidate pointers to memory locations after they have been deallocated, allowing subsequent operations to access freed memory.
2. Exploitation Mechanics & Attack Scenario
An attacker initiates the exploit via a local, unprivileged application installed on the target device. By invoking specific kernel APIs, the application triggers the deallocation of a target memory object and subsequently fills the freed memory slot with attacker-controlled data. When the kernel attempts to reuse the dangling pointer, it executes the attacker's payload, resulting in local privilege escalation to kernel level.
3. Infrastructure & Business Impact
As a vulnerability listed in the CISA KEV catalog, this flaw has been actively exploited in the wild. Successful exploitation bypasses all application sandbox protections, enabling attackers to exfiltrate sensitive corporate data, monitor user activities, capture keystrokes, and deploy persistent malware within the enterprise network.
Official Vendor Advisories & References
A use-after-free issue was addressed with improved memory management. This issue is fixed in iOS 17 and iPadOS 17, iOS 15.8.7 and iPadOS 15.8.7. An app may be able to execute arbitrary code with kernel privileges.
Frequently Asked SecOps Questions (CVE-2023-41974)
FAQQ1. How critical is CVE-2023-41974 and is it actively exploited in the wild?
CVE-2023-41974 is rated CVSS 7.8 (HIGH) with a 30-day EPSS exploitation probability of 2.0%. It is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, requiring immediate emergency remediation.
Q2. Which vendors and products are affected by CVE-2023-41974?
Primary impacted vendors include apple across ios, ipados. Scope summary: All Apple devices running iOS/iPadOS versions prior to 17, and iOS/iPadOS versions prior to 15.8.7
Q3. What temporary mitigations or workarounds exist for CVE-2023-41974 before patching?
[Mitigation] Immediately apply official Apple software updates to upgrade to iOS 17, iOS 15.8.7, or later versions Follow the CLI remediation commands and interactive SecOps checklist on this page to restrict exposure prior to your maintenance window.
Generate an Internal Engineering Notice or CISO Report for CVE-2023-41974
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