CVE-2023-42736
📋 TL;DR
This vulnerability in telecom services allows local attackers to escalate privileges without needing additional execution permissions, due to a missing permission check. It affects systems running vulnerable telecom software, potentially compromising device security.
💻 Affected Systems
- Unisoc telecom services
📦 What is this software?
Android by Google
Android by Google
Android by Google
⚠️ Risk & Real-World Impact
Worst Case
An attacker gains full administrative control over the device, enabling data theft, system manipulation, or further attacks.
Likely Case
Local privilege escalation leading to unauthorized access to sensitive functions or data on the device.
If Mitigated
Limited impact if proper access controls and patching are implemented, preventing exploitation.
🎯 Exploit Status
Exploitation likely requires local access to the device; no public proof-of-concept known.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Unisoc advisory for specific patched versions.
Vendor Advisory: https://www.unisoc.com/en_us/secy/announcementDetail/1731138365803266049
Restart Required: Yes
Instructions:
1. Review the Unisoc advisory for patch details. 2. Apply the provided security update to affected systems. 3. Restart devices to ensure changes take effect.
🔧 Temporary Workarounds
Restrict local access
allLimit physical and logical access to devices to reduce attack surface.
🧯 If You Can't Patch
- Implement strict access controls and monitor for suspicious local activity.
- Isolate affected systems from critical networks to limit potential damage.
🔍 How to Verify
Check if Vulnerable:
Check system version against Unisoc's advisory; if running a vulnerable version, assume affected.Check Version:
Use device-specific commands (e.g., 'getprop' on Android) to check telecom service version; refer to vendor documentation.Verify Fix Applied:
Verify that the patched version from the advisory is installed and no unauthorized privilege escalations occur.📡 Detection & Monitoring
Log Indicators:
- Log entries showing unauthorized privilege escalation attempts or permission failures in telecom services.
Network Indicators:
- None, as this is a local vulnerability.
SIEM Query:
Search for logs related to telecom service permission errors or unexpected privilege changes on local devices.