CVE-2016-2488 in Android
Summary
by MITRE
The Qualcomm camera driver in Android before 2016-06-01 on Nexus 5, 5X, 6, 6P, and 7 (2013) devices allows attackers to gain privileges via a crafted application, aka internal bug 27600832.
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Analysis
by VulDB Data Team • 01/18/2019
The vulnerability identified as CVE-2016-2488 represents a critical privilege escalation flaw within the Qualcomm camera driver component of Android operating systems. This issue affects a range of Nexus devices including the Nexus 5, 5X, 6, 6P, and 2013 Nexus 7 models, specifically impacting Android versions released prior to June 1, 2016. The flaw resides in the kernel-level camera driver implementation that handles camera functionality and image processing operations on these mobile devices.
The technical nature of this vulnerability stems from improper input validation and memory management within the Qualcomm camera driver module. Attackers can exploit this weakness by crafting a malicious application that leverages specific API calls or memory access patterns to manipulate the driver's behavior. This allows the attacker-controlled application to escalate its privileges from standard user level to kernel-level access, effectively bypassing the Android security model that normally separates user applications from system-level operations. The vulnerability is classified under CWE-20 as a weakness in input validation, specifically involving improper handling of untrusted data within kernel space components.
The operational impact of this privilege escalation vulnerability is severe and far-reaching for affected devices. Once exploited, attackers gain complete control over the device's camera hardware and can potentially access all system resources, user data, and communication channels. This capability enables sophisticated attack vectors including persistent surveillance through unauthorized camera access, data exfiltration, and establishment of persistent backdoors. The vulnerability affects devices that were already considered legacy platforms, making them particularly susceptible to exploitation as these devices often lack regular security updates and may have outdated security mitigations. The attack surface is particularly concerning given that camera drivers typically have broad access to system resources and can interact with other kernel components.
Mitigation strategies for this vulnerability require immediate action from device owners and administrators. The primary and most effective solution involves applying the official Android security patches released by Google and Qualcomm, which address the specific privilege escalation flaw in the camera driver implementation. Organizations should prioritize updating all affected Nexus devices to the latest Android security patch level, particularly those running versions prior to the June 2016 security release. Additionally, device administrators should implement mobile device management solutions that can enforce security policies and monitor for suspicious application behavior. From a defensive perspective, this vulnerability aligns with ATT&CK technique T1068 which describes privilege escalation through kernel exploits, and represents a classic example of how hardware driver vulnerabilities can be leveraged for system compromise. Network monitoring solutions should also be configured to detect anomalous camera driver access patterns that might indicate exploitation attempts. The vulnerability demonstrates the importance of proper kernel security implementation and highlights the risks associated with complex driver code that interfaces between user and kernel space operations.