CVE-2017-8278 in Android
Summary
by MITRE
In all Qualcomm products with Android releases from CAF using the Linux kernel, while reading audio data from an unspecified driver, a buffer overflow or integer overflow could occur.
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Analysis
by VulDB Data Team • 01/14/2021
The vulnerability identified as CVE-2017-8278 represents a critical security flaw affecting Qualcomm products that incorporate Android-based systems utilizing the Linux kernel. This issue manifests within an unspecified audio driver component that processes audio data input, creating potential pathways for malicious exploitation. The vulnerability affects all Qualcomm products running Android releases from the Code Aurora Forum (CAF) that utilize the Linux kernel architecture, indicating a widespread impact across numerous mobile devices and embedded systems. The flaw specifically occurs during the process of reading audio data, suggesting that any application or system component that interacts with audio input or processing capabilities could potentially trigger this vulnerability.
The technical nature of CVE-2017-8278 encompasses both buffer overflow and integer overflow conditions, which are among the most dangerous classes of vulnerabilities in system software. Buffer overflow conditions occur when more data is written to a fixed-length buffer than it can accommodate, potentially overwriting adjacent memory locations and allowing attackers to execute arbitrary code or cause system crashes. Integer overflow vulnerabilities arise when arithmetic operations produce results that exceed the maximum value that can be stored in the target data type, often leading to unexpected behavior and potential exploitation. These dual vulnerabilities within the audio driver component create multiple attack vectors and increase the likelihood of successful exploitation. The vulnerability falls under CWE-121, which specifically addresses stack-based buffer overflow conditions, and CWE-191, which covers integer underflow and overflow conditions, both of which are fundamental weaknesses in software security design.
The operational impact of this vulnerability extends beyond simple system instability, potentially enabling sophisticated attack scenarios that could compromise device integrity and user privacy. Attackers could exploit this vulnerability to execute malicious code within the audio processing context, potentially escalating privileges and gaining deeper system access. The nature of audio drivers as system-level components means that successful exploitation could allow adversaries to manipulate audio input/output functionalities, potentially capturing sensitive audio data or disrupting critical audio services. Given that Qualcomm products are widely deployed in mobile devices, tablets, and embedded systems, this vulnerability creates risk across multiple device categories including smartphones, automotive infotainment systems, and IoT devices that rely on Qualcomm chipsets. The attack surface is particularly concerning because audio processing is a fundamental system function that applications and services frequently utilize, making exploitation relatively easy to achieve through normal device usage patterns.
Mitigation strategies for CVE-2017-8278 require immediate attention from device manufacturers and system administrators to prevent potential exploitation. The primary recommendation involves applying security patches and firmware updates provided by Qualcomm and device manufacturers, as these updates typically contain fixes for the specific buffer and integer overflow conditions within the audio driver components. System administrators should implement network monitoring to detect unusual audio processing behaviors that might indicate exploitation attempts, while also ensuring that device firmware remains current with security updates. The vulnerability aligns with ATT&CK technique T1059, which covers command and script injection, as attackers might attempt to leverage this vulnerability to execute malicious commands through audio processing interfaces. Organizations should also consider implementing runtime application self-protection measures and memory protection mechanisms to reduce the impact of potential exploitation attempts. Additionally, regular security assessments of audio processing components and comprehensive vulnerability scanning should be conducted to identify similar issues within the broader system architecture, as this vulnerability demonstrates the potential for cascading effects in driver-based system components.