CVE-2020-2701
📋 TL;DR
This vulnerability in Oracle VM VirtualBox allows a high-privileged attacker with local access to the host system to potentially compromise the VirtualBox software, leading to complete takeover. The attack is difficult to exploit but could impact other products running on the same infrastructure. Users running affected versions of Oracle VM VirtualBox are at risk.
💻 Affected Systems
- Oracle VM VirtualBox
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of Oracle VM VirtualBox, potentially allowing attacker to escape the virtual machine and gain control of the host system or other virtual machines.
Likely Case
Local privilege escalation or denial of service affecting the VirtualBox installation, requiring an attacker to already have high privileges on the host system.
If Mitigated
Minimal impact if proper access controls limit local administrative privileges and VirtualBox is not exposed to untrusted users.
🎯 Exploit Status
Exploitation requires high privileges (PR:H) and is difficult to exploit (AC:H). The vulnerability is in the Core component and may affect additional products running on the same infrastructure.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 5.2.36, 6.0.16, or 6.1.2 and later
Vendor Advisory: https://www.oracle.com/security-alerts/cpujan2020.html
Restart Required: Yes
Instructions:
1. Download the latest version of Oracle VM VirtualBox from the official website. 2. Uninstall the current vulnerable version. 3. Install the patched version (5.2.36, 6.0.16, or 6.1.2+). 4. Restart the host system to ensure all components are updated.
🔧 Temporary Workarounds
Restrict Local Administrative Access
allLimit the number of users with administrative privileges on systems running VirtualBox to reduce attack surface.
Disable VirtualBox if Not Needed
allUninstall or disable Oracle VM VirtualBox on systems where it is not required for operations.
sudo apt remove virtualbox (Linux)
Uninstall via Control Panel (Windows)
sudo rm -rf /Applications/VirtualBox.app (macOS)
🧯 If You Can't Patch
- Implement strict access controls to limit who has administrative privileges on systems running VirtualBox
- Monitor systems for unusual activity and consider isolating VirtualBox hosts from critical infrastructure
🔍 How to Verify
Check if Vulnerable:
Check the installed version of Oracle VM VirtualBox and compare against affected versions (prior to 5.2.36, 6.0.16, or 6.1.2).Check Version:
VBoxManage --version (Linux/macOS) or check Help > About in VirtualBox GUI (all platforms)Verify Fix Applied:
Verify that the installed version is 5.2.36 or later for 5.2.x branch, 6.0.16 or later for 6.0.x branch, or 6.1.2 or later for 6.1.x branch.📡 Detection & Monitoring
Log Indicators:
- Unusual VirtualBox process crashes or errors
- Suspicious administrative activity on VirtualBox hosts
- Unexpected VirtualBox service restarts
Network Indicators:
- This is a local vulnerability with no direct network indicators
SIEM Query:
Search for VirtualBox process anomalies or version information showing vulnerable versions🔗 References
- https://security.gentoo.org/glsa/202101-09
- https://www.oracle.com/security-alerts/cpujan2020.html
- https://www.zerodayinitiative.com/advisories/ZDI-20-550/
- https://security.gentoo.org/glsa/202101-09
- https://www.oracle.com/security-alerts/cpujan2020.html
- https://www.zerodayinitiative.com/advisories/ZDI-20-550/
