CVE-2019-15362 in Iris 88 Go
Summary
by MITRE
The Lava Iris 88 Go Android device with a build fingerprint of LAVA/iris88_go/iris88_go:8.1.0/O11019/1538188945:user/release-keys contains a pre-installed app with a package name of com.mediatek.wfo.impl app (versionCode=27, versionName=8.1.0) that allows any app co-located on the device to modify a system property through an exported interface without proper authorization.
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Analysis
by VulDB Data Team • 02/14/2024
The vulnerability identified as CVE-2019-15362 represents a critical security flaw in the Lava Iris 88 Go Android device that stems from improper access control mechanisms within a pre-installed system application. This issue resides in the com.mediatek.wfo.impl package which operates with version code 27 and version name 8.1.0, indicating it is part of the device's telephony infrastructure implementation. The vulnerability specifically manifests through an exported interface that permits any co-located application to modify system properties without adequate authentication or authorization checks, creating a significant attack surface that could be exploited by malicious applications installed on the same device.
The technical flaw constitutes a direct violation of Android's security model and represents a classic case of insufficient access control as classified under CWE-284. The exported interface within the telecommunications implementation package exposes system-level functionality that should remain restricted to system-level processes or components with proper privileges. This misconfiguration allows any application with sufficient privileges to interact with system properties through this interface, potentially enabling privilege escalation attacks or unauthorized system modifications. The vulnerability is particularly concerning because it operates at the system level, bypassing normal application sandboxing mechanisms that typically protect system integrity.
The operational impact of this vulnerability extends beyond simple unauthorized access, as it provides attackers with potential pathways to compromise device security and functionality. Any application co-located on the device could leverage this interface to modify critical system properties, potentially affecting telephony services, network connectivity, or other core device functions. This flaw could enable attackers to manipulate device behavior, disable security features, or establish persistent access points within the device's operating environment. The vulnerability's exploitation could lead to data exfiltration, device compromise, or the establishment of backdoors that persist across device reboots, making it particularly dangerous for users who may not be aware of the presence of malicious applications.
Security mitigations for this vulnerability should focus on implementing proper access controls and privilege management within the affected application. System administrators and device manufacturers should ensure that exported interfaces within system applications are properly restricted to authorized components only, implementing proper authentication mechanisms before allowing any modifications to system properties. The solution involves enforcing strict permission models where only trusted system components can access these interfaces, aligning with the principle of least privilege as defined in security best practices. Additionally, regular security audits of pre-installed applications should be conducted to identify similar vulnerabilities, and the affected application should be updated to remove or restrict the exported interface until proper authorization mechanisms are implemented. This vulnerability demonstrates the importance of maintaining strict security boundaries within Android's application framework and highlights the need for continuous monitoring and updating of system components to prevent unauthorized access to critical device functions.