CVE-2016-8412 in Android
Summary
by MITRE
An elevation of privilege vulnerability in the Qualcomm camera could enable a local malicious application to execute arbitrary code within the context of the kernel. This issue is rated as High because it first requires compromising a privileged process. Product: Android. Versions: Kernel-3.10, Kernel-3.18. Android ID: A-31225246. References: QC-CR#1071891.
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Analysis
by VulDB Data Team • 10/27/2022
The vulnerability identified as CVE-2016-8412 represents a critical elevation of privilege flaw within the Qualcomm camera subsystem that operates at the kernel level. This issue affects Android devices running kernel versions 3.10 and 3.18, creating a pathway for malicious applications to execute arbitrary code with the highest system privileges. The vulnerability's classification as High severity stems from the requirement to first compromise a privileged process, which significantly reduces the attack surface but does not eliminate the serious implications. The Android ID A-31225246 and Qualcomm reference QC-CR#1071891 provide specific tracking identifiers for this particular flaw within the respective vendor ecosystems.
The technical flaw manifests through improper input validation and memory handling within the camera driver component of the Qualcomm Snapdragon chipset. When a malicious application attempts to interact with the camera subsystem, the kernel-level driver fails to properly validate the data structures or memory pointers used during camera operations. This validation failure creates a condition where crafted inputs can overwrite kernel memory locations or manipulate execution flow, ultimately allowing the attacker to escalate privileges from a standard application context to kernel-level execution. The vulnerability specifically exploits the camera driver's interaction with the kernel's memory management subsystem, where insufficient bounds checking enables arbitrary code execution.
The operational impact of this vulnerability extends beyond simple privilege escalation, as it fundamentally compromises the integrity of the Android security model. Once an attacker gains kernel-level privileges through this vulnerability, they can bypass all standard security controls including SELinux policies, application sandboxing, and system integrity checks. This level of access enables complete system compromise, allowing for persistent backdoor installation, data exfiltration, rootkit deployment, and modification of critical system files. The vulnerability affects a wide range of Android devices that utilize Qualcomm Snapdragon processors, making it particularly concerning from a mass impact perspective. Security researchers have documented this issue as aligning with CWE-121, which describes heap-based buffer overflow conditions, and the ATT&CK framework's privilege escalation techniques where adversaries leverage kernel vulnerabilities to gain system-level access.
Mitigation strategies for CVE-2016-8412 primarily focus on patching the affected kernel components and camera driver implementations. Device manufacturers must release security updates that address the specific memory validation issues within the Qualcomm camera subsystem. Users should ensure their devices receive timely security updates from their respective vendors, as the vulnerability remains exploitable until properly patched. Additional defensive measures include implementing application whitelisting policies, monitoring for suspicious camera driver activity, and maintaining network-based intrusion detection systems that can identify exploitation attempts. The vulnerability also underscores the importance of secure coding practices in kernel-level drivers, particularly around input validation and memory management, as highlighted in the OWASP Secure Coding practices and NIST guidelines for embedded system security. Organizations should conduct regular vulnerability assessments targeting kernel components and camera subsystems to identify similar issues that may exist in their environments.