CVE-2021-30675
📋 TL;DR
CVE-2021-30675 is a memory corruption vulnerability in Apple's Boot Camp software that allows a malicious application to elevate privileges. This affects users running Boot Camp on macOS systems with Intel processors. Successful exploitation could give an attacker higher system privileges than intended.
💻 Affected Systems
- Apple Boot Camp
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
An attacker gains full system control through privilege escalation, potentially installing persistent malware, accessing sensitive data, or compromising the entire system.
Likely Case
Local attackers with limited privileges could elevate to administrative or system-level access to bypass security controls.
If Mitigated
With proper patch management and least privilege principles, the impact is limited to isolated systems where exploitation requires local access.
🎯 Exploit Status
Exploitation requires local access and ability to execute malicious code. No public exploit code has been disclosed.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Boot Camp 6.1.14
Vendor Advisory: https://support.apple.com/en-us/HT212517
Restart Required: Yes
Instructions:
1. Open System Preferences > Software Update. 2. Install all available updates. 3. Restart your Mac. 4. Verify Boot Camp version is 6.1.14 or later.
🔧 Temporary Workarounds
Disable Boot Camp if not needed
allRemove or disable Boot Camp Assistant if Windows dual-boot functionality is not required
Restrict local user privileges
allImplement least privilege by restricting standard users from installing or running untrusted applications
🧯 If You Can't Patch
- Implement application allowlisting to prevent execution of unauthorized applications
- Use endpoint detection and response (EDR) solutions to detect privilege escalation attempts
🔍 How to Verify
Check if Vulnerable:
Check Boot Camp version in System Information > Software > Boot Camp. If version is earlier than 6.1.14, system is vulnerable.Check Version:
system_profiler SPSoftwareDataType | grep 'Boot Camp'Verify Fix Applied:
Confirm Boot Camp version is 6.1.14 or later in System Information.📡 Detection & Monitoring
Log Indicators:
- Unexpected privilege escalation events
- Suspicious Boot Camp process behavior
- Unauthorized access to system directories
Network Indicators:
- None - this is a local vulnerability
SIEM Query:
process where (parent_process_name contains 'Boot Camp' OR process_name contains 'Boot Camp') AND (integrity_level changed OR privileges escalated)