CVE-2024-5474
📋 TL;DR
A local privilege escalation vulnerability in Lenovo's Dolby Vision Provisioning software allows attackers to read arbitrary files with elevated privileges during package installation. Only systems installing affected versions are vulnerable; previously installed versions are not impacted. This affects Lenovo devices with the vulnerable software package.
💻 Affected Systems
- Lenovo Dolby Vision Provisioning software
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Local attacker gains unauthorized read access to sensitive system files, potentially exposing credentials, configuration data, or other confidential information.
Likely Case
Local user with basic privileges reads protected files they shouldn't have access to, potentially compromising system security or user privacy.
If Mitigated
Attack fails due to proper access controls or the vulnerability being patched before exploitation attempts.
🎯 Exploit Status
Requires local access to the system and exploitation during package installation. No public exploit code has been disclosed.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.0.0.2
Vendor Advisory: https://support.lenovo.com/us/en/product_security/LEN-158394
Restart Required: No
Instructions:
1. Download Dolby Vision Provisioning software version 2.0.0.2 or later from Lenovo support site. 2. Install the updated package following Lenovo's installation instructions. 3. Verify the installation completed successfully.
🔧 Temporary Workarounds
Avoid installation of vulnerable packages
windowsDo not install Dolby Vision Provisioning software versions prior to 2.0.0.2
Restrict local access during installation
windowsEnsure only trusted administrators perform software installations and restrict local user access during installation processes
🧯 If You Can't Patch
- Implement strict access controls to limit who can install software on affected systems
- Monitor for unauthorized file access attempts and installation activities on vulnerable systems
🔍 How to Verify
Check if Vulnerable:
Check if Dolby Vision Provisioning software version is earlier than 2.0.0.2 in installed programs or during installation processCheck Version:
wmic product where name="Dolby Vision Provisioning" get versionVerify Fix Applied:
Confirm installed version is 2.0.0.2 or later via Programs and Features or software version check📡 Detection & Monitoring
Log Indicators:
- Failed file access attempts with elevated privileges
- Installation logs showing vulnerable software version installation
Network Indicators:
- No network indicators - this is a local attack
SIEM Query:
EventID=4688 AND ProcessName LIKE '%Dolby%' AND CommandLine LIKE '%install%'