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CVE-2022-26708

9.8 CRITICAL
Remote Code Execution

📋 TL;DR

CVE-2022-26708 is a critical vulnerability in macOS that allows an attacker to cause application crashes or execute arbitrary code on affected systems. This affects macOS Monterey users who haven't updated to version 12.4. The vulnerability could lead to complete system compromise.

💻 Affected Systems

Products:
  • macOS Monterey
Versions: Versions prior to 12.4
Operating Systems: macOS Monterey
Default Config Vulnerable: ⚠️ Yes
Notes: All default installations of affected macOS Monterey versions are vulnerable. No special configuration required for exploitation.

📦 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...

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⚠️ Risk & Real-World Impact

🔴

Worst Case

Full system compromise with root-level arbitrary code execution, allowing attacker to install persistent malware, steal sensitive data, or pivot to other systems.

🟠

Likely Case

Application termination leading to denial of service, or limited code execution in user context allowing data theft and privilege escalation.

🟢

If Mitigated

Minimal impact if systems are patched, isolated, or have additional security controls like application whitelisting.

🌐 Internet-Facing: HIGH - Attackers could exploit this remotely if vulnerable services are exposed to the internet.
🏢 Internal Only: HIGH - Even internally, this could be exploited via phishing, malicious documents, or lateral movement.

🎯 Exploit Status

Public PoC: ✅ No
Weaponized: UNKNOWN
Unauthenticated Exploit: ⚠️ Yes
Complexity: LOW

Apple's description suggests this could be exploited without authentication. The CVSS 9.8 score indicates network-accessible attack vector with low attack complexity.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: macOS Monterey 12.4

Vendor Advisory: https://support.apple.com/en-us/HT213257

Restart Required: Yes

Instructions:

1. Open System Preferences > Software Update. 2. Click 'Update Now' if macOS Monterey 12.4 is available. 3. Follow on-screen instructions to download and install. 4. Restart when prompted.

🔧 Temporary Workarounds

Network Segmentation

all

Isolate vulnerable systems from untrusted networks and internet access

Application Control

all

Implement application whitelisting to prevent unauthorized code execution

🧯 If You Can't Patch

  • Isolate affected systems from production networks and internet access
  • Implement strict network segmentation and monitor for unusual activity

🔍 How to Verify

Check if Vulnerable:

Check macOS version: if running macOS Monterey version earlier than 12.4, system is vulnerable.

Check Version:

sw_vers

Verify Fix Applied:

Verify macOS version is 12.4 or later and check that security update 2022-004 is installed.

📡 Detection & Monitoring

Log Indicators:

  • Unexpected application crashes, especially system processes
  • Unusual process creation or privilege escalation events
  • Security framework violations

Network Indicators:

  • Unusual outbound connections from macOS systems
  • Network traffic patterns suggesting exploitation attempts

SIEM Query:

source="macos" AND (event_type="process_crash" OR event_type="privilege_escalation") AND host_version<"12.4"

📊 Metadata

CVE ID: CVE-2022-26708
CVSS v3 Score: 9.8 (CRITICAL)
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published: May 26, 2022
Last Updated: November 21, 2024

🔗 References

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