CVE-2014-9985
📋 TL;DR
This CVE describes a Time-of-Check Time-of-Use (TOCTOU) vulnerability in Qualcomm Snapdragon chipsets used in Android devices. It allows attackers to bypass error condition checks, potentially leading to privilege escalation or arbitrary code execution. Affected devices include those with Qualcomm MDM9635M, SD 400, and SD 800 chips running Android versions before the April 2018 security patch.
💻 Affected Systems
- Android devices with Qualcomm Snapdragon MDM9635M
- Android devices with Qualcomm Snapdragon SD 400
- Android devices with Qualcomm Snapdragon SD 800
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete device compromise allowing remote code execution with kernel privileges, potentially enabling persistent malware installation, data theft, and device control.
Likely Case
Local privilege escalation allowing apps to gain elevated permissions, access sensitive data, or modify system settings without user consent.
If Mitigated
Limited impact with proper security patches applied; devices remain vulnerable only to sophisticated attacks requiring physical access or malware installation.
🎯 Exploit Status
Exploitation requires local access or malware installation; TOCTOU vulnerabilities typically require precise timing attacks.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Android security patch level 2018-04-05 or later
Vendor Advisory: https://source.android.com/security/bulletin/2018-04-01
Restart Required: Yes
Instructions:
1. Check current Android security patch level in Settings > About phone > Android security patch level. 2. If before April 2018, update device through Settings > System > System update. 3. Install available updates and restart device.
🔧 Temporary Workarounds
Disable unknown sources
androidPrevent installation of apps from unknown sources to reduce attack surface
Settings > Security > Unknown sources (toggle OFF)
Enable Google Play Protect
androidUse built-in malware scanning for apps
Settings > Google > Security > Google Play Protect (ensure enabled)
🧯 If You Can't Patch
- Isolate affected devices from critical networks and sensitive data
- Implement mobile device management (MDM) with strict app whitelisting and monitoring
🔍 How to Verify
Check if Vulnerable:
Check Android security patch level in Settings > About phone > Android security patch level. If date is before April 2018, device is vulnerable.Check Version:
Settings > About phone > Android security patch levelVerify Fix Applied:
Verify security patch level shows April 2018 or later after applying updates.📡 Detection & Monitoring
Log Indicators:
- Kernel panic logs
- Unexpected privilege escalation attempts
- Suspicious timing-related system calls
Network Indicators:
- Unusual outbound connections from mobile devices
- Communication with known malicious domains
SIEM Query:
source="android-devices" AND (event_type="privilege_escalation" OR event_type="kernel_panic")