CVE-2017-2716 in Mate 9
Summary
by MITRE
The camerafs driver in Mate 9 Versions earlier than MHA-AL00BC00B173 has buffer overflow vulnerability. An attacker tricks a user into installing a malicious application which has the system privilege of the Android system and sends a specific parameter to the driver of the smart phone, causing a system crash or privilege escalation.
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Analysis
by VulDB Data Team • 01/11/2023
The CVE-2017-2716 vulnerability resides within the camerafs driver component of Huawei Mate 9 devices running Android versions prior to MHA-AL00BC00B173. This represents a critical buffer overflow flaw that fundamentally compromises the device's security architecture by allowing unauthorized privilege escalation. The vulnerability specifically affects the camera filesystem driver which manages camera-related operations and file system interactions on the mobile platform. The flaw exists in how the driver processes input parameters from potentially malicious applications, creating an exploitable condition where attacker-controlled data can overwrite adjacent memory regions beyond the intended buffer boundaries.
The technical exploitation of this vulnerability occurs through a carefully crafted malicious application that leverages system privileges to interact with the vulnerable camerafs driver. When the malicious application sends specific parameter values to the driver, the buffer overflow condition manifests, causing unpredictable behavior including system crashes or more severely, privilege escalation to the highest system level. This type of vulnerability falls under CWE-121, which describes stack-based buffer overflow conditions where insufficient bounds checking allows memory corruption. The attack vector requires user interaction to install the malicious application, making this a sophisticated social engineering target that combines application-level exploitation with privilege escalation techniques.
From an operational security perspective, this vulnerability presents a severe risk to device integrity and user data protection. The privilege escalation capability means that an attacker could gain root access to the device, potentially enabling full system compromise including access to encrypted data, camera functionality, and other sensitive system resources. The impact extends beyond simple device instability to encompass complete system takeover, making it particularly dangerous in environments where device security is paramount. The vulnerability's presence in the camera driver component also suggests potential exposure of sensitive camera-related functionalities and associated data, aligning with ATT&CK technique T1059.001 for command and scripting interpreter usage and T1068 for exploit for privilege escalation.
Mitigation strategies for CVE-2017-2716 must include immediate firmware updates to the affected Huawei Mate 9 devices, ensuring that users install the MHA-AL00BC00B173 or later system builds that contain patched driver implementations. Organizations should implement strict application vetting processes to prevent installation of untrusted applications, particularly those that request excessive permissions or system-level access. Network monitoring solutions should be deployed to detect anomalous behavior patterns that might indicate exploitation attempts, while endpoint protection systems should be configured to block known malicious application signatures. Additionally, security awareness training for end users should emphasize the importance of only installing applications from trusted sources and avoiding suspicious download links that could deliver malicious payloads designed to exploit this specific vulnerability in the camera filesystem driver.