Apple WebKit Arbitrary Code Execution Vulnerability (CVE-2024-44308) Security Advisory
Executive & SecOps Summary
SECOPS ASSESSMENTApple devices running Safari prior to 18.1.1, iOS/iPadOS 17/18, macOS Sequoia, and visionOS
Processing maliciously crafted web content may lead to arbitrary code execution and complete device compromise
Immediately apply the official security updates released by Apple (iOS 18.1.1, macOS 15.1.1, etc.)
Affected Products & Version Scope
Remediation & Live Workaround Commands
PATCH & WORKAROUND1. Official Patch & Version Upgrade Commands
Apply the latest operating system updates immediately. For enterprise macOS fleets, administrators can force software updates using the command-line utility:
# Check, download, and install all available macOS security updates
sudo softwareupdate -i -a2. Temporary Workaround & Hardening Configuration
If immediate patching is not feasible, restrict access to untrusted websites and enforce strict content filtering. Ensure Safari's built-in anti-phishing and security features are enabled via configuration profiles or terminal commands:
# Enable fraudulent website warnings in Safari
defaults write com.apple.Safari WarnAboutFraudulentWebsites -bool true3. Log Audit & IoC Verification Commands
Verify the current operating system and Safari versions to identify vulnerable assets within your infrastructure:
# Retrieve the current macOS version details
sw_vers
# Check the installed Safari version to ensure it is updated to 18.1.1 or higher
defaults read /Applications/Safari.app/Contents/Info.plist BundleShortVersionStringBlock Kernel Privilege Escalation & Ransomware Payloads Before You Can Reboot
Protect unpatched Windows, Linux, and macOS workloads against in-memory exploitation and lateral movement with autonomous EDR.
Technical Root Cause & Exploitation Mechanics
1. Vulnerability Overview & Root Cause
This vulnerability (CVE-2024-44308) is an arbitrary code execution flaw within Apple's WebKit rendering engine. The root cause lies in insufficient validation and memory management checks when processing web content. By exploiting this flaw, an attacker can corrupt memory safety boundaries within the WebKit process.
2. Exploitation Mechanics & Attack Scenario
An attacker hosts a malicious website containing crafted HTML or JavaScript. When a target user visits the site via Safari or any application utilizing the WebKit framework, the engine processes the malicious payload, triggering memory corruption. This vulnerability has been actively exploited in the wild, specifically targeting Intel-based Mac systems.
3. Infrastructure & Business Impact
Successful exploitation allows attackers to execute arbitrary code with the privileges of the WebKit process. In an enterprise environment, this can serve as an initial access vector, enabling threat actors to bypass security controls, steal sensitive session tokens, and potentially pivot deeper into the corporate network.
Official Vendor Advisories & References
The issue was addressed with improved checks. This issue is fixed in Safari 18.1.1, iOS 17.7.2 and iPadOS 17.7.2, iOS 18.1.1 and iPadOS 18.1.1, macOS Sequoia 15.1.1, visionOS 2.1.1. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited on Intel-based Mac systems.
Frequently Asked SecOps Questions (CVE-2024-44308)
FAQQ1. How critical is CVE-2024-44308 and is it actively exploited in the wild?
CVE-2024-44308 is rated CVSS 8.8 (HIGH) with a 30-day EPSS exploitation probability of 9.8%. It is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, requiring immediate emergency remediation.
Q2. Which vendors and products are affected by CVE-2024-44308?
Primary impacted vendors include apple across safari, macos, ios, ipados, visionos. Scope summary: Safari versions prior to 18.1.1, iOS/iPadOS versions prior to 17.7.2 and 18.1.1, macOS Sequoia versions prior to 15.1.1, and visionOS versions prior to 2.1.1
Q3. What temporary mitigations or workarounds exist for CVE-2024-44308 before patching?
[Mitigation] Immediately apply the official security updates released by Apple (iOS 18.1.1, macOS 15.1.1, etc.) 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-2024-44308
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