CVE-2023-38464
📋 TL;DR
CVE-2023-38464 is a missing permission check vulnerability in vowifiservice that allows local attackers to escalate privileges without requiring additional execution privileges. This affects systems running vulnerable versions of vowifiservice, typically on devices using Unisoc chipsets. Attackers with local access can exploit this to gain elevated privileges on the affected system.
💻 Affected Systems
- vowifiservice
📦 What is this software?
Android by Google
⚠️ Risk & Real-World Impact
Worst Case
An attacker with local access gains full system control, potentially compromising the entire device, installing persistent malware, accessing sensitive data, or using the device as a pivot point in network attacks.
Likely Case
Local user or malware gains elevated privileges to modify system settings, access restricted data, or install additional malicious components.
If Mitigated
With proper access controls and minimal user privileges, impact is limited to the compromised user account scope.
🎯 Exploit Status
Exploitation requires local access but appears straightforward given the missing permission check. No public exploit code was found in the provided references.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not specified in references; check vendor advisory for specific patched versions
Vendor Advisory: https://www.unisoc.com/en_us/secy/announcementDetail/1698296481653522434
Restart Required: Yes
Instructions:
1. Check device manufacturer for security updates
2. Apply available firmware/OS updates from device vendor
3. Verify vowifiservice version after update
4. Restart device to ensure patch is active
🔧 Temporary Workarounds
Restrict local user privileges
allLimit local user accounts to minimal necessary privileges to reduce attack surface
Monitor vowifiservice activity
linuxImplement monitoring for unusual vowifiservice process behavior or privilege changes
🧯 If You Can't Patch
- Implement strict access controls to limit local user privileges
- Deploy endpoint detection and response (EDR) solutions to monitor for privilege escalation attempts
🔍 How to Verify
Check if Vulnerable:
Check vowifiservice version and compare against vendor patched versions. Examine service permissions and access controls.Check Version:
Command varies by device; typically check system properties or package manager for vowifiservice versionVerify Fix Applied:
Verify that the latest firmware/OS update has been applied and check vowifiservice version against vendor's patched version list.📡 Detection & Monitoring
Log Indicators:
- Unexpected privilege escalation events
- Unauthorized access to vowifiservice components
- Abnormal process creation by vowifiservice
Network Indicators:
- Not applicable - local vulnerability
SIEM Query:
Search for privilege escalation events or unauthorized service access related to vowifiservice