CVE-2023-38449
📋 TL;DR
CVE-2023-38449 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, potentially allowing attackers to gain elevated access to the system. The vulnerability requires local access to exploit.
💻 Affected Systems
- vowifiservice
📦 What is this software?
Android by Google
⚠️ Risk & Real-World Impact
Worst Case
An attacker with local access could gain root/system-level privileges, potentially taking full control of the affected device, accessing sensitive data, or installing persistent malware.
Likely Case
Local users or malware with initial foothold could escalate privileges to perform unauthorized actions, modify system configurations, or bypass security controls.
If Mitigated
With proper access controls and least privilege principles, the impact is limited to the specific service context rather than full system compromise.
🎯 Exploit Status
Exploitation requires local access but likely involves simple privilege escalation techniques once initial access is obtained.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not specified in provided references
Vendor Advisory: https://www.unisoc.com/en_us/secy/announcementDetail/1698296481653522434
Restart Required: Yes
Instructions:
1. Check with device manufacturer for security updates. 2. Apply available firmware/security patches. 3. Restart device after patching. 4. Verify patch installation.
🔧 Temporary Workarounds
Restrict local access
allLimit physical and remote local access to vulnerable devices
Disable unnecessary services
linuxDisable vowifiservice if not required for device functionality
pm disable com.android.vowifiservice
stop vowifiservice
🧯 If You Can't Patch
- Implement strict access controls to limit who has local access to devices
- Monitor for unusual privilege escalation attempts and system modifications
🔍 How to Verify
Check if Vulnerable:
Check device manufacturer security bulletins or run: pm list packages | grep vowifiservice to see if service is presentCheck Version:
dumpsys package com.android.vowifiservice | grep versionVerify Fix Applied:
Check with device manufacturer for patch verification or verify service version after update📡 Detection & Monitoring
Log Indicators:
- Unusual privilege escalation attempts
- vowifiservice process running with elevated privileges
- Unauthorized system modifications
Network Indicators:
- Local privilege escalation typically doesn't generate network traffic
SIEM Query:
process_name:vowifiservice AND (privilege_change OR uid_change)