CVE-2023-24930
📋 TL;DR
This vulnerability in Microsoft OneDrive for macOS allows an attacker to gain elevated privileges on the system. An authenticated attacker could exploit this to execute arbitrary code with higher permissions than intended. Only macOS users running vulnerable versions of OneDrive are affected.
💻 Affected Systems
- Microsoft OneDrive
📦 What is this software?
Onedrive by Microsoft
⚠️ Risk & Real-World Impact
Worst Case
An attacker gains full system control, installs persistent malware, accesses sensitive data, and compromises other user accounts on the same machine.
Likely Case
Local privilege escalation allowing attackers to bypass security controls, install additional malicious software, or access protected system resources.
If Mitigated
Limited impact with proper endpoint protection, least privilege principles, and network segmentation in place.
🎯 Exploit Status
Requires local access and some level of user interaction or existing foothold. No public exploit code available as of knowledge cutoff.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 23.080.0421.0002 and later
Vendor Advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-24930
Restart Required: Yes
Instructions:
1. Open OneDrive on macOS. 2. Click the OneDrive cloud icon in the menu bar. 3. Select Help & Settings > Preferences. 4. Go to the About tab. 5. Check version and update if below 23.080.0421.0002. 6. Restart the application or system if prompted.
🔧 Temporary Workarounds
Disable OneDrive Auto-Start
allPrevent OneDrive from automatically starting with the system to reduce attack surface
launchctl unload -w ~/Library/LaunchAgents/com.microsoft.OneDriveUpdater.plist
rm ~/Library/LaunchAgents/com.microsoft.OneDriveUpdater.plist
Restrict OneDrive Permissions
allLimit OneDrive's access using macOS Privacy & Security settings
🧯 If You Can't Patch
- Implement strict endpoint detection and response (EDR) to monitor for privilege escalation attempts
- Apply principle of least privilege to user accounts and restrict administrative access
🔍 How to Verify
Check if Vulnerable:
Check OneDrive version in Preferences > About tab. If version is below 23.080.0421.0002, system is vulnerable.Check Version:
defaults read /Applications/OneDrive.app/Contents/Info.plist CFBundleShortVersionStringVerify Fix Applied:
Confirm version is 23.080.0421.0002 or higher in Preferences > About tab after update.📡 Detection & Monitoring
Log Indicators:
- Unusual process spawning from OneDrive
- Privilege escalation attempts in system logs
- Unauthorized access to protected directories
Network Indicators:
- Unusual outbound connections from OneDrive process
SIEM Query:
process_name:"OneDrive" AND (event_type:"privilege_escalation" OR parent_process:"OneDrive" AND process_integrity_level:"high")