CVE-2023-42835

7.5 HIGH

📋 TL;DR

This macOS vulnerability allows attackers to bypass security checks and access user data through a logic issue. It affects macOS systems before Sonoma 14.1. The vulnerability could expose sensitive information to unauthorized parties.

💻 Affected Systems

Products:
  • macOS
Versions: Versions before macOS Sonoma 14.1
Operating Systems: macOS
Default Config Vulnerable: ⚠️ Yes
Notes: Affects standard macOS installations; 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

Complete compromise of user data including personal files, credentials, and sensitive information stored on the affected macOS system.

🟠

Likely Case

Unauthorized access to specific user data or files that the attacker can reach through the logic bypass.

🟢

If Mitigated

Limited or no data exposure if proper access controls and security boundaries are maintained.

🌐 Internet-Facing: LOW
🏢 Internal Only: MEDIUM

🎯 Exploit Status

Public PoC: ✅ No
Weaponized: UNKNOWN
Unauthenticated Exploit: ✅ No
Complexity: MEDIUM

Requires some level of access or user interaction; Apple has not disclosed specific exploitation details.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: macOS Sonoma 14.1

Vendor Advisory: https://support.apple.com/en-us/HT213984

Restart Required: Yes

Instructions:

1. Open System Settings 2. Click General 3. Click Software Update 4. Install macOS Sonoma 14.1 update 5. Restart when prompted

🧯 If You Can't Patch

  • Restrict user access to sensitive data
  • Implement additional access controls and monitoring

🔍 How to Verify

Check if Vulnerable:

Check macOS version in System Settings > General > About. If version is earlier than 14.1, system is vulnerable.

Check Version:

sw_vers

Verify Fix Applied:

Verify macOS version is 14.1 or later in System Settings > General > About.

📡 Detection & Monitoring

Log Indicators:

  • Unexpected file access patterns
  • Security framework denials or bypasses

SIEM Query:

macOS security logs showing unexpected file access or permission bypass events

🔗 References

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