CVE-2015-9167
📋 TL;DR
This CVE describes an integer underflow vulnerability in the EMM command handling of Qualcomm Snapdragon chipsets used in Android devices. Successful exploitation could allow attackers to execute arbitrary code with kernel privileges. Affected devices include Android smartphones and automobiles using specific Snapdragon processors before the April 2018 security patch.
💻 Affected Systems
- Android devices with Qualcomm Snapdragon chipsets
📦 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 malware to gain kernel-level access and bypass security controls.
If Mitigated
Limited impact if patched, with potential denial of service or instability if exploited.
🎯 Exploit Status
Exploitation requires kernel-level access and understanding of EMM command handling. No public exploit code is documented.
🛠️ 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 device security patch level in Settings > About phone > Android security patch level. 2. If patch level is before April 2018, update device through manufacturer's OTA update system. 3. For enterprise devices, push updates through MDM solutions. 4. Restart device after update.
🔧 Temporary Workarounds
No effective workarounds
allThis is a kernel-level vulnerability requiring patching at the firmware level.
🧯 If You Can't Patch
- Isolate affected devices from critical networks and sensitive data
- Implement strict application whitelisting and monitor for unusual kernel activity
🔍 How to Verify
Check if Vulnerable:
Check Android security patch level in Settings > About phone > Android security patch level. If date is before 2018-04-05, device is vulnerable.Check Version:
adb shell getprop ro.build.version.security_patchVerify Fix Applied:
Verify security patch level shows 2018-04-05 or later after applying updates.📡 Detection & Monitoring
Log Indicators:
- Kernel panic logs
- Unexpected EMM command handling errors
- Privilege escalation attempts
Network Indicators:
- Unusual kernel module loading
- Suspicious root access patterns
SIEM Query:
Device security_patch_level < '2018-04-05' AND chipset_model IN ('SD410', 'SD425', 'SD430', 'SD450', 'SD600', 'SD615', 'SD616', 'SD415', 'SD617', 'SD625', 'SD650', 'SD652', 'SD800', 'SD808', 'SD810', 'SD820', 'SD820A')