CVE-2015-9177
📋 TL;DR
A buffer over-read vulnerability in a crypto API function on Qualcomm Snapdragon chipsets allows attackers to read sensitive data from adjacent memory locations. This affects Android devices with Qualcomm Snapdragon Automobile, Mobile, and Wear chipsets before the April 2018 security patch. The vulnerability could lead to information disclosure or potentially facilitate further attacks.
💻 Affected Systems
- Qualcomm Snapdragon Automobile
- Qualcomm Snapdragon Mobile
- Qualcomm Snapdragon Wear
📦 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 of sensitive data from adjacent memory, potentially including cryptographic keys or other protected information.
If Mitigated
Limited impact with proper memory protections and exploit mitigations in place, potentially just crashes or denial of service.
🎯 Exploit Status
Requires local access or malicious application installation. Buffer over-read vulnerabilities typically require specific conditions to be weaponized for code execution.
🛠️ 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. For enterprise devices, deploy updates through MDM solutions. 4. For embedded/IoT devices, contact device manufacturer for firmware updates.
🔧 Temporary Workarounds
Application sandboxing enforcement
androidEnsure strict application sandboxing and permission controls to limit potential attack surface
Memory protection controls
androidEnable ASLR and other memory protection features if available in device configuration
🧯 If You Can't Patch
- Isolate affected devices from sensitive networks and data
- Implement strict application whitelisting and only install trusted applications from official stores
🔍 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 Android security patch level shows April 2018 or later date after applying updates.📡 Detection & Monitoring
Log Indicators:
- Unexpected application crashes in crypto-related functions
- Memory access violation logs
- SELinux/security policy violations
Network Indicators:
- Unusual outbound data transfers from affected devices
- Suspicious application behavior patterns
SIEM Query:
source="android_device" AND (event_type="crash" AND process_name CONTAINS "crypto") OR (security_patch_level < "2018-04-05")