CVE-2024-11128
📋 TL;DR
This vulnerability allows attackers to inject malicious dynamic libraries into Bitdefender Virus Scanner on macOS, bypassing Apple's security protections. It affects macOS users running Bitdefender Virus Scanner versions before 3.18, potentially enabling privilege escalation or malware persistence.
💻 Affected Systems
- Bitdefender Virus Scanner for macOS
📦 What is this software?
Virus Scanner by Bitdefender
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise via privilege escalation, allowing attackers to execute arbitrary code with elevated privileges, install persistent malware, or bypass other security controls.
Likely Case
Local privilege escalation allowing attackers to gain higher privileges than intended, potentially leading to data theft, surveillance, or installation of additional malware.
If Mitigated
Limited impact if proper endpoint protection and monitoring are in place, though the vulnerability still provides an initial foothold for attackers.
🎯 Exploit Status
Requires local access to the system and knowledge of DYLD injection techniques. No public exploit code is known at this time.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version 3.18 or later
Restart Required: No
Instructions:
1. Open Bitdefender Virus Scanner. 2. Check for updates in the application settings. 3. Install version 3.18 or later. 4. Verify the update completed successfully.
🔧 Temporary Workarounds
Disable Bitdefender Virus Scanner
macOSTemporarily disable the vulnerable component until patching is possible
🧯 If You Can't Patch
- Implement strict application control policies to prevent unauthorized DYLD injection
- Monitor for suspicious process injection attempts using endpoint detection tools
🔍 How to Verify
Check if Vulnerable:
Check Bitdefender Virus Scanner version in application settings or About dialog. If version is below 3.18, the system is vulnerable.Check Version:
Check via Bitdefender GUI or look for version information in /Applications/Bitdefender Virus Scanner.appVerify Fix Applied:
Confirm Bitdefender Virus Scanner version is 3.18 or higher in application settings.📡 Detection & Monitoring
Log Indicators:
- Unusual DYLD environment variable modifications
- Suspicious library loading by Bitdefender processes
- Unauthorized privilege escalation attempts
Network Indicators:
- None - this is a local vulnerability
SIEM Query:
Process creation events where parent process is BitdefenderVirusScanner with suspicious command line arguments or environment variables