CVE-2015-9153
📋 TL;DR
This vulnerability is a buffer over-read in a DRM function affecting multiple Qualcomm Snapdragon chipsets used in Android devices. It allows attackers to read memory beyond allocated buffers, potentially exposing sensitive information or enabling further exploitation. Affected devices include Android smartphones, wearables, and automotive systems with specific Qualcomm processors before April 2018 security patches.
💻 Affected Systems
- Android devices with Qualcomm Snapdragon Automobile, Mobile, and Wear chipsets
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete device compromise, data theft, or persistent backdoor installation.
Likely Case
Information disclosure through memory leaks, potentially exposing DRM keys, authentication tokens, or other sensitive data.
If Mitigated
Limited impact with proper memory protections and exploit mitigations in place, possibly resulting in application crashes only.
🎯 Exploit Status
Buffer over-read vulnerabilities in DRM functions typically require specific conditions to trigger and may need additional vulnerabilities for full exploitation.
🛠️ 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 for Android system updates in device settings. 2. Apply the April 2018 or later security patch. 3. Restart device after installation. 4. Verify patch level in About Phone settings.
🔧 Temporary Workarounds
Disable vulnerable DRM services
androidTemporarily disable or restrict DRM-related services if not essential for device functionality
🧯 If You Can't Patch
- Isolate affected devices from untrusted networks and limit network exposure
- Implement application whitelisting and restrict installation of untrusted applications
🔍 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 April 2018 or later📡 Detection & Monitoring
Log Indicators:
- DRM service crashes
- Memory access violations in system logs
- Unexpected DRM-related process behavior
Network Indicators:
- Unusual DRM license requests
- Suspicious network traffic to DRM servers
SIEM Query:
source="android_system" AND (process="drm" OR process="media") AND (event="crash" OR event="access_violation")