CVE-2024-27800 – This vulnerability in Apple operating systems a... (How to Fix)

Q: What is the severity of CVE-2024-27800?

CVE-2024-27800 has a CVSS score of 6.5 (MEDIUM). This vulnerability in Apple operating systems allows processing a maliciously crafted message to cause a denial-of-service condition. It affects multiple Apple platforms including macOS, iOS, iPadOS, tvOS, visionOS, and watchOS. Users running affected versions are vulnerable until they update to patched versions.

📋 TL;DR

This vulnerability in Apple operating systems allows processing a maliciously crafted message to cause a denial-of-service condition. It affects multiple Apple platforms including macOS, iOS, iPadOS, tvOS, visionOS, and watchOS. Users running affected versions are vulnerable until they update to patched versions.

💻 Affected Systems

Products:

macOS
iOS
iPadOS
tvOS
visionOS
watchOS

Versions: Versions prior to macOS Ventura 13.6.7, macOS Monterey 12.7.5, iOS 16.7.8, iPadOS 16.7.8, tvOS 17.5, visionOS 1.2, iOS 17.5, iPadOS 17.5, watchOS 10.5, macOS Sonoma 14.5

Operating Systems: Apple operating systems

Default Config Vulnerable: ⚠️ Yes

Notes: All default configurations of affected versions are vulnerable. The vulnerability was addressed by removing the vulnerable code.

📦 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 →

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 →

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 →

Visionos by Apple

View all CVEs affecting Visionos →

Watchos by Apple

View all CVEs affecting Watchos →

⚠️ Risk & Real-World Impact

🔴

Worst Case

Complete system crash or unresponsiveness requiring reboot, potentially disrupting critical operations on affected Apple devices.

🟠

Likely Case

Application or system component crash causing temporary service disruption until system is restarted.

🟢

If Mitigated

Minimal impact with proper network filtering and updated systems, potentially just failed message processing.

🌐 Internet-Facing: MEDIUM - Requires receiving malicious messages but could affect internet-connected services.

🏢 Internal Only: MEDIUM - Internal messaging systems could be exploited by malicious insiders or compromised accounts.

🎯 Exploit Status

Public PoC: ✅ No

Weaponized: UNKNOWN

Unauthenticated Exploit: ⚠️ Yes

Complexity: LOW

Exploitation requires sending a maliciously crafted message to the vulnerable system. No authentication is required to trigger the vulnerability.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: macOS Ventura 13.6.7, macOS Monterey 12.7.5, iOS 16.7.8, iPadOS 16.7.8, tvOS 17.5, visionOS 1.2, iOS 17.5, iPadOS 17.5, watchOS 10.5, macOS Sonoma 14.5

Vendor Advisory: https://support.apple.com/en-us/HT214100

Restart Required: Yes

Instructions:

1. Open Settings/System Preferences. 2. Navigate to Software Update. 3. Install the latest available update for your Apple device. 4. Restart the device after installation completes.

🔧 Temporary Workarounds

Network Filtering

all

Implement network filtering to block suspicious messages at perimeter devices.

Application Control

all

Restrict messaging applications to trusted sources only.

🧯 If You Can't Patch

Isolate affected systems from untrusted networks and messaging sources
Implement strict monitoring for system crashes or unusual message processing

🔍 How to Verify

Check if Vulnerable:

Check system version against affected versions list. On macOS: System Settings > General > About. On iOS/iPadOS: Settings > General > About.

Check Version:

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

Verify Fix Applied:

Verify system version matches or exceeds patched versions listed in the fix information.

📡 Detection & Monitoring

Log Indicators:

Unexpected application crashes
System crash reports
Kernel panic logs

Network Indicators:

Unusual message patterns to Apple devices
Spike in malformed network packets

SIEM Query:

source="apple_system_logs" AND (event="crash" OR event="panic") AND process="message_processor"

📊 Metadata

CVE ID: CVE-2024-27800

CVSS v3 Score: 6.5 (MEDIUM)

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

CWE: CWE-400

Published: June 10, 2024

Last Updated: November 21, 2024

🔗 References

http://seclists.org/fulldisclosure/2024/Jun/5 Mailing List,Third Party Advisory
https://support.apple.com/en-us/HT214100 Vendor Advisory
https://support.apple.com/en-us/HT214101 Vendor Advisory
https://support.apple.com/en-us/HT214102 Vendor Advisory
https://support.apple.com/en-us/HT214104 Vendor Advisory
https://support.apple.com/en-us/HT214105 Vendor Advisory
https://support.apple.com/en-us/HT214106 Vendor Advisory
https://support.apple.com/en-us/HT214107 Vendor Advisory
https://support.apple.com/en-us/HT214108 Vendor Advisory
https://support.apple.com/kb/HT214100 Vendor Advisory
https://support.apple.com/kb/HT214101 Vendor Advisory
https://support.apple.com/kb/HT214102 Vendor Advisory
https://support.apple.com/kb/HT214104 Vendor Advisory
https://support.apple.com/kb/HT214105 Vendor Advisory
https://support.apple.com/kb/HT214106 Vendor Advisory
https://support.apple.com/kb/HT214107 Vendor Advisory
https://support.apple.com/kb/HT214108 Vendor Advisory
http://seclists.org/fulldisclosure/2024/Jun/5 Mailing List,Third Party Advisory
https://support.apple.com/en-us/HT214100 Vendor Advisory
https://support.apple.com/en-us/HT214101 Vendor Advisory
https://support.apple.com/en-us/HT214102 Vendor Advisory
https://support.apple.com/en-us/HT214104 Vendor Advisory
https://support.apple.com/en-us/HT214105 Vendor Advisory
https://support.apple.com/en-us/HT214106 Vendor Advisory
https://support.apple.com/en-us/HT214107 Vendor Advisory
https://support.apple.com/en-us/HT214108 Vendor Advisory
https://support.apple.com/kb/HT214100 Vendor Advisory
https://support.apple.com/kb/HT214101 Vendor Advisory
https://support.apple.com/kb/HT214102 Vendor Advisory
https://support.apple.com/kb/HT214104 Vendor Advisory
https://support.apple.com/kb/HT214105 Vendor Advisory
https://support.apple.com/kb/HT214106 Vendor Advisory
https://support.apple.com/kb/HT214107 Vendor Advisory
https://support.apple.com/kb/HT214108 Vendor Advisory

📤 Share & Export

📄 Export Markdown 📋 Export JSON

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📋 TL;DR

💻 Affected Systems

📦 What is this software?

Ipados by Apple

Ipados by Apple

Iphone Os by Apple

Iphone Os by Apple

Macos by Apple

Macos by Apple

Macos by Apple

Tvos by Apple

Visionos by Apple

Watchos by Apple

⚠️ Risk & Real-World Impact

Worst Case

Likely Case

If Mitigated

🎯 Exploit Status

🛠️ Fix & Mitigation

✅ Official Fix

Instructions:

🔧 Temporary Workarounds

Network Filtering

Application Control

🧯 If You Can't Patch

🔍 How to Verify

Check if Vulnerable:

Check Version:

Verify Fix Applied:

📡 Detection & Monitoring

Log Indicators:

Network Indicators:

SIEM Query:

📊 Metadata

🔗 References

📤 Share & Export

🔗 Related Vulnerabilities