CVE-2015-9159
📋 TL;DR
This vulnerability in Qualcomm Snapdragon chipsets allows potential buffer overflow due to lack of input validation in the OEMCrypto_GetRandom function. It affects Android devices with specific Qualcomm processors before the April 2018 security patch. Successful exploitation could allow attackers to execute arbitrary code with system privileges.
💻 Affected Systems
- Android devices with Qualcomm Snapdragon processors
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution with kernel/system privileges leading to complete device compromise, data theft, and persistent backdoor installation.
Likely Case
Local privilege escalation allowing apps to gain elevated permissions and access sensitive data or system functions.
If Mitigated
Limited impact with proper security patches applied and app sandboxing preventing privilege escalation.
🎯 Exploit Status
Requires local access or malicious app installation. Buffer overflow exploitation typically requires specific conditions and memory layout knowledge.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Android security patch level April 5, 2018 or later
Vendor Advisory: https://source.android.com/security/bulletin/2018-04-01
Restart Required: Yes
Instructions:
1. Check device security patch level in Settings > About phone > Android security patch level. 2. If before April 2018, install latest Android updates via Settings > System > System update. 3. For enterprise devices, deploy updates through MDM solutions. 4. Contact device manufacturer for specific update availability.
🔧 Temporary Workarounds
Application sandboxing enforcement
androidEnsure Android app sandboxing is properly enforced to limit potential damage from malicious apps
Disable unknown sources
androidPrevent installation of apps from unknown sources to reduce attack surface
🧯 If You Can't Patch
- Isolate affected devices on separate network segments with strict access controls
- Implement application allowlisting to prevent unauthorized app execution
🔍 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:
adb shell getprop ro.build.version.security_patchVerify Fix Applied:
Verify security patch level shows April 2018 or later. Check Qualcomm chipset version matches affected list.📡 Detection & Monitoring
Log Indicators:
- Unusual process creation with elevated privileges
- OEMCrypto API calls with abnormal parameters
- Memory access violations in system logs
Network Indicators:
- Unusual outbound connections from system processes
- Suspicious app behavior patterns
SIEM Query:
source="android_logs" AND (process="OEMCrypto" OR privilege_escalation=true)