CVE-2024-27818 – This CVE describes a memory handling vulnerabil... (How to Fix)

Q: What is the severity of CVE-2024-27818?

CVE-2024-27818 has a CVSS score of 7.8 (HIGH). This CVE describes a memory handling vulnerability in Apple operating systems that could allow an attacker to cause app crashes or execute arbitrary code. It affects iOS, iPadOS, and macOS users running vulnerable versions. The vulnerability is related to improper command injection (CWE-77).

📋 TL;DR

This CVE describes a memory handling vulnerability in Apple operating systems that could allow an attacker to cause app crashes or execute arbitrary code. It affects iOS, iPadOS, and macOS users running vulnerable versions. The vulnerability is related to improper command injection (CWE-77).

💻 Affected Systems

Products:

iOS
iPadOS
macOS

Versions: Versions before iOS 17.5, iPadOS 17.5, and macOS Sonoma 14.5

Operating Systems: iOS, iPadOS, macOS

Default Config Vulnerable: ⚠️ Yes

Notes: All devices running affected versions are vulnerable by default.

📦 What is this software?

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 →

⚠️ Risk & Real-World Impact

🔴

Worst Case

Remote code execution with full system compromise, allowing attacker to install malware, steal data, or create persistent access.

🟠

Likely Case

Application crashes leading to denial of service, with potential for limited code execution in specific contexts.

🟢

If Mitigated

Minimal impact if systems are patched and proper network segmentation exists.

🌐 Internet-Facing: MEDIUM - Requires user interaction or specific conditions for remote exploitation.

🏢 Internal Only: MEDIUM - Could be exploited through phishing or compromised internal systems.

🎯 Exploit Status

Public PoC: ✅ No

Weaponized: UNKNOWN

Unauthenticated Exploit: ✅ No

Complexity: MEDIUM

Exploitation likely requires user interaction or specific conditions. No public exploit code identified in references.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: iOS 17.5, iPadOS 17.5, macOS Sonoma 14.5

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

Restart Required: Yes

Instructions:

1. Go to Settings > General > Software Update. 2. Download and install iOS 17.5/iPadOS 17.5/macOS Sonoma 14.5. 3. Restart device after installation completes.

🔧 Temporary Workarounds

Network Segmentation

all

Isolate vulnerable devices from untrusted networks to reduce attack surface.

Application Control

all

Restrict installation and execution of untrusted applications.

🧯 If You Can't Patch

Implement strict network segmentation to isolate vulnerable devices
Deploy endpoint detection and response (EDR) solutions to monitor for exploitation attempts

🔍 How to Verify

Check if Vulnerable:

Check Settings > General > About > Version on iOS/iPadOS or Apple menu > About This Mac on macOS.

Check Version:

iOS/iPadOS: Settings > General > About > Version; macOS: sw_vers

Verify Fix Applied:

Verify version is iOS 17.5 or later, iPadOS 17.5 or later, or macOS Sonoma 14.5 or later.

📡 Detection & Monitoring

Log Indicators:

Unexpected application crashes
Memory access violation logs
Unusual process creation

Network Indicators:

Suspicious network connections from Apple devices
Unusual outbound traffic patterns

SIEM Query:

source="apple-devices" AND (event_type="crash" OR event_type="memory_violation")

📊 Metadata

CVE ID: CVE-2024-27818

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-77

Published: May 14, 2024

Last Updated: March 26, 2025

🔗 References

http://seclists.org/fulldisclosure/2024/May/10 Mailing List
http://seclists.org/fulldisclosure/2024/May/12 Mailing List
https://support.apple.com/en-us/HT214101 Vendor Advisory
https://support.apple.com/en-us/HT214106 Vendor Advisory
https://support.apple.com/kb/HT214100 Vendor Advisory
https://support.apple.com/kb/HT214101 Vendor Advisory
https://support.apple.com/kb/HT214106 Vendor Advisory
http://seclists.org/fulldisclosure/2024/May/10 Mailing List
http://seclists.org/fulldisclosure/2024/May/12 Mailing List
https://support.apple.com/en-us/HT214101 Vendor Advisory
https://support.apple.com/en-us/HT214106 Vendor Advisory
https://support.apple.com/kb/HT214100 Vendor Advisory
https://support.apple.com/kb/HT214101 Vendor Advisory
https://support.apple.com/kb/HT214106 Vendor Advisory

📤 Share & Export

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