CVE-2024-23214: Apple iPadOS RCE Vulnerability

CVE-2024-23214 Overview

CVE-2024-23214 is a critical memory corruption vulnerability affecting Apple's macOS, iOS, and iPadOS operating systems. The vulnerability exists in the web content processing components and can be triggered when a user views maliciously crafted web content. Successful exploitation allows an attacker to execute arbitrary code within the context of the affected application, potentially leading to complete system compromise.

This vulnerability stems from multiple memory corruption issues that Apple addressed through improved memory handling mechanisms. The attack requires user interaction—specifically, a victim must be lured to a malicious website or tricked into opening malicious web content—but once triggered, the consequences can be severe, including unauthorized access to sensitive data, installation of malware, or full device takeover.

Critical Impact

Processing maliciously crafted web content may lead to arbitrary code execution on affected Apple devices, potentially compromising user data and system integrity.

Affected Products

• Apple macOS Sonoma (versions prior to 14.3)
• Apple iOS (versions prior to 17.3 and 16.7.5)
• Apple iPadOS (versions prior to 17.3 and 16.7.5)

Discovery Timeline

• January 23, 2024 - CVE-2024-23214 published to NVD
• May 30, 2025 - Last updated in NVD database

Technical Details for CVE-2024-23214

Vulnerability Analysis

CVE-2024-23214 is classified under CWE-787 (Out-of-Bounds Write), which represents a memory safety vulnerability where a program writes data past the end or before the beginning of the intended buffer. In the context of this Apple vulnerability, the flaw resides in the web content processing engine used across macOS, iOS, and iPadOS.

When the affected systems process specially crafted web content, the memory corruption occurs due to improper bounds checking during memory operations. This allows an attacker to potentially overwrite adjacent memory regions, which can be leveraged to hijack program control flow and execute arbitrary code with the privileges of the current user.

The network-based attack vector means this vulnerability can be exploited remotely through web browsers or any application that renders web content. While user interaction is required (visiting a malicious page or viewing malicious content), sophisticated attackers can employ social engineering techniques or compromise legitimate websites to deliver the exploit payload.

Root Cause

The root cause of this vulnerability is improper memory handling in Apple's web content processing components. Specifically, multiple memory corruption issues existed that failed to properly validate memory boundaries during web content parsing and rendering operations. When processing certain malformed or crafted web content structures, the system could write data outside the bounds of allocated memory buffers, leading to memory corruption conditions that attackers can exploit.

Apple addressed these issues by implementing improved memory handling mechanisms that enforce proper bounds checking and memory safety during web content processing operations.

Attack Vector

The attack vector for CVE-2024-23214 is network-based, requiring the victim to interact with malicious web content. An attacker can exploit this vulnerability through several scenarios:

1. Malicious Website: An attacker hosts a website containing specially crafted content designed to trigger the memory corruption when viewed
2. Compromised Legitimate Sites: Injecting malicious content into trusted websites through advertisements or compromised resources
3. Phishing Campaigns: Sending links to malicious content via email, messaging apps, or social media
4. Man-in-the-Middle: Injecting malicious content into unencrypted web traffic

Once a victim processes the malicious web content, the memory corruption occurs, potentially allowing the attacker to execute arbitrary code and gain unauthorized access to the affected device. The exploitation chain typically involves:

• Triggering the out-of-bounds write condition through crafted web content
• Corrupting memory structures to gain control of execution flow
• Executing attacker-supplied shellcode to compromise the system

For detailed technical information about this vulnerability, refer to the Apple Security Advisory and the Full Disclosure Announcement.

Detection Methods for CVE-2024-23214

Indicators of Compromise

• Unexpected crashes of Safari, WebKit-based applications, or other web content rendering processes on Apple devices
• Unusual memory consumption patterns or system instability after visiting certain websites
• Presence of unknown processes spawned from web browser or WebKit processes
• Suspicious outbound network connections originating from web content rendering components

Detection Strategies

• Monitor system logs for WebKit or Safari crash reports with memory corruption signatures
• Implement network-based detection rules to identify known malicious web content patterns associated with memory corruption exploits
• Deploy endpoint detection solutions capable of identifying anomalous behavior following web browsing activities
• Utilize behavioral analysis to detect code execution attempts originating from web content processes

Monitoring Recommendations

• Enable comprehensive logging on Apple devices to capture application crashes and security events
• Monitor for unusual child process creation from web browsers and WebKit-based applications
• Implement network traffic analysis to detect connections to known malicious infrastructure
• Configure SentinelOne agents to monitor for behavioral indicators associated with memory corruption exploitation

How to Mitigate CVE-2024-23214

Immediate Actions Required

• Update all affected Apple devices to the patched versions: macOS Sonoma 14.3, iOS 17.3 or 16.7.5, and iPadOS 17.3 or 16.7.5
• Enable automatic updates on all Apple devices to ensure timely security patch deployment
• Educate users about the risks of clicking suspicious links or visiting untrusted websites
• Consider implementing web content filtering to block access to known malicious domains

Patch Information

Apple has released security updates that address this vulnerability through improved memory handling. Organizations should apply the following updates immediately:

• macOS Sonoma 14.3: See Apple Security Update HT214063
• iOS 17.3 and iPadOS 17.3: See Apple Security Update HT214059
• iOS 16.7.5 and iPadOS 16.7.5: See Apple Security Update HT214061

These patches implement improved memory handling to prevent the out-of-bounds write conditions that enabled exploitation.

Workarounds

• Restrict web browsing to trusted sites only until patches can be applied
• Use content blockers or browser extensions that can prevent execution of potentially malicious scripts
• Disable JavaScript in Safari settings temporarily for high-risk environments (Settings > Safari > Advanced > JavaScript)
• Implement network-level filtering to block known malicious domains and suspicious web content

# Verify Apple device software version on macOS
sw_vers -productVersion

# Check for available updates on macOS
softwareupdate --list

# Install all available updates on macOS
sudo softwareupdate --install --all