CVE-2014-9955
📋 TL;DR
CVE-2014-9955 is a critical elevation of privilege vulnerability in Qualcomm's closed-source components within the Android kernel. This vulnerability allows attackers to gain root privileges on affected Android devices, potentially taking full control of the system. All Android devices using vulnerable Qualcomm components are affected.
💻 Affected Systems
- Android devices with Qualcomm chipsets
📦 What is this software?
Android by Google
⚠️ Risk & Real-World Impact
Worst Case
Complete device compromise with root access, allowing installation of persistent malware, data theft, and device control.
Likely Case
Local privilege escalation leading to unauthorized access to sensitive data and system resources.
If Mitigated
Limited impact if devices are patched and have proper security controls like SELinux enforcement.
🎯 Exploit Status
Requires local access to device. Exploit details are publicly available in security bulletins.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Android security patch level June 2017 or later
Vendor Advisory: https://source.android.com/security/bulletin/2017-06-01
Restart Required: Yes
Instructions:
1. Check for system updates in Settings > System > System update. 2. Install June 2017 or later security patch. 3. Reboot device after installation.
🔧 Temporary Workarounds
Disable unnecessary services
androidReduce attack surface by disabling unused services and applications
Enable SELinux enforcement
androidEnsure SELinux is in enforcing mode to limit privilege escalation impact
getenforce
🧯 If You Can't Patch
- Isolate affected devices from sensitive networks and data
- Implement strict access controls and monitoring for vulnerable devices
🔍 How to Verify
Check if Vulnerable:
Check Android security patch level in Settings > About phone > Android security patch levelCheck Version:
adb shell getprop ro.build.version.security_patchVerify Fix Applied:
Verify security patch level is June 2017 or later📡 Detection & Monitoring
Log Indicators:
- Unexpected privilege escalation events
- SELinux denials related to Qualcomm components
Network Indicators:
- Unusual outbound connections from Android devices
SIEM Query:
source="android" AND (event_type="privilege_escalation" OR event_type="selinux_denial")