CVE-2016-8469 in Android
Summary
by MITRE
An information disclosure vulnerability in the camera driver could enable a local malicious application to access data outside of its permission levels. This issue is rated as Moderate because it first requires compromising a privileged process. Product: Android. Versions: Kernel-3.10. Android ID: A-31351206. References: N-CVE-2016-8469.
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Analysis
by VulDB Data Team • 10/27/2022
The vulnerability described in CVE-2016-8469 represents a significant information disclosure flaw within the Android kernel's camera driver component. This issue resides in the kernel version 3.10 and affects the overall security posture of Android devices by potentially allowing unauthorized data access through improper privilege enforcement mechanisms. The vulnerability specifically targets the camera driver module which handles critical hardware interactions and data processing operations. The Android ID A-31351206 indicates this was properly tracked and classified within Google's security tracking system, highlighting the recognized risk level and impact potential.
The technical implementation of this flaw involves a privilege escalation vector within the camera driver subsystem where insufficient access controls allow malicious applications to bypass normal permission boundaries. When a local application successfully compromises a privileged process, it can leverage this vulnerability to access data that should normally be restricted to higher privilege levels. This represents a classic case of insufficient privilege checking where the driver fails to properly validate access requests from user-space applications. The vulnerability's classification as Moderate severity reflects the requirement for an initial compromise of a privileged process, which serves as a prerequisite for exploitation but does not eliminate the security risk entirely.
From an operational perspective, this vulnerability creates a dangerous pathway for attackers to escalate their privileges and access sensitive data that could include camera feed information, device metadata, or other confidential system data. The impact extends beyond simple information disclosure as it provides a potential foothold for further attacks within the device ecosystem. The requirement for an initial privileged process compromise means that attackers must first gain access to a system component with elevated permissions, but once achieved, the vulnerability enables lateral movement and data exfiltration. This aligns with attack patterns documented in the mitre ATT&CK framework where privilege escalation techniques are commonly employed to gain deeper system access and information gathering capabilities.
The vulnerability demonstrates weaknesses in the kernel's security model and access control enforcement mechanisms. It particularly highlights gaps in the driver's validation processes where user-space applications can manipulate or exploit kernel interfaces to access restricted resources. This issue falls under the CWE classification of insufficient privilege checking, which is categorized under the broader weakness domain of privilege escalation. The security implications extend to device integrity and user privacy protection, as unauthorized access to camera data could potentially expose sensitive visual information or device configuration details. Organizations and users must consider this vulnerability as part of their overall device security posture, particularly in environments where device security is paramount. Proper mitigation involves ensuring timely kernel updates, implementing robust application sandboxing, and maintaining awareness of privilege escalation attack vectors. The vulnerability also underscores the importance of comprehensive security testing for kernel components and driver modules, as these elements form the foundation of device security and can provide attackers with critical access points for system compromise.