CVE-2022-48247
📋 TL;DR
This CVE describes a missing permission check vulnerability in the audio service that could allow local attackers to escalate privileges without requiring additional execution privileges. It affects systems running vulnerable versions of Unisoc audio service components. The vulnerability enables attackers to gain elevated access on compromised devices.
💻 Affected Systems
- Unisoc audio service components
📦 What is this software?
Android by Google
Android by Google
Android by Google
Android by Google
⚠️ Risk & Real-World Impact
Worst Case
Local attacker gains full system/root privileges, potentially compromising the entire device and accessing sensitive data or installing persistent malware.
Likely Case
Local user or malware with basic access escalates to higher privileges, enabling installation of additional malicious software or accessing restricted system resources.
If Mitigated
With proper access controls and least privilege principles, impact is limited to the compromised user context only.
🎯 Exploit Status
Requires local access to the system. No public exploit code identified in provided references.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not specified in references
Vendor Advisory: https://www.unisoc.com/en_us/secy/announcementDetail/1654776866982133761
Restart Required: Yes
Instructions:
1. Check with device manufacturer for available security updates. 2. Apply the latest firmware/security patches from the device vendor. 3. Reboot device after patch installation.
🔧 Temporary Workarounds
Restrict local access
allLimit physical and remote local access to vulnerable devices
Disable unnecessary audio services
androidIf audio functionality is not critical, consider disabling affected audio services
🧯 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 unusual audio service activity
🔍 How to Verify
Check if Vulnerable:
Check device specifications for Unisoc chipset and review installed security patch level. Contact device manufacturer for vulnerability status.Check Version:
On Android: Settings > About Phone > Android version / Security patch levelVerify Fix Applied:
Verify security patch level is updated beyond the vulnerability disclosure date (2022). Check with manufacturer for specific patch verification.📡 Detection & Monitoring
Log Indicators:
- Unusual audio service activity
- Privilege escalation attempts
- Unexpected process execution with elevated privileges
Network Indicators:
- Local privilege escalation typically doesn't generate network indicators
SIEM Query:
Search for: audio service process spawning with elevated privileges, unexpected setuid/setgid operations