CVE-2023-38453
📋 TL;DR
CVE-2023-38453 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, installing malware, accessing sensitive data, or persisting access.
Likely Case
Local users or malware with initial foothold could escalate privileges to perform unauthorized actions, bypass security controls, or maintain persistence on the system.
If Mitigated
With proper access controls and least privilege principles, the impact is limited to authorized local users who might abuse the vulnerability.
🎯 Exploit Status
Exploitation requires local access to the device. No public exploit code was mentioned in the provided references.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Specific version not provided in references; check vendor advisory for details
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 the latest firmware/security patch from the vendor. 3. Reboot the device after applying the patch.
🔧 Temporary Workarounds
Restrict local access
allLimit physical and remote local access to vulnerable devices to reduce attack surface
Disable unnecessary services
androidIf vowifiservice is not required, consider disabling it to reduce risk
adb shell pm disable com.android.vowifiservice (if applicable and supported)
🧯 If You Can't Patch
- Implement strict access controls to limit who has local access to vulnerable devices
- Monitor for suspicious privilege escalation attempts and unauthorized system modifications
🔍 How to Verify
Check if Vulnerable:
Check device firmware version against vendor's patched versions. Examine vowifiservice permissions and implementation if technical expertise available.Check Version:
adb shell getprop ro.build.version.security_patch (for Android devices) or check device settings > about phone > Android security patch levelVerify Fix Applied:
Verify that the device has received and installed the latest security patch from the manufacturer. Check that vowifiservice no longer allows privilege escalation without proper permissions.📡 Detection & Monitoring
Log Indicators:
- Unexpected privilege escalation attempts
- Unauthorized access to system services
- Suspicious vowifiservice activity
Network Indicators:
- Local privilege escalation typically doesn't generate network traffic unless followed by network activity
SIEM Query:
Search for events indicating privilege escalation, unusual service access, or security policy violations on affected devices