CVE-2015-0574 in Android
Summary
by MITRE
In all Qualcomm products with Android releases from CAF using the Linux kernel, the validation of filesystem access was insufficient.
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Analysis
by VulDB Data Team • 11/08/2019
The vulnerability identified as CVE-2015-0574 represents a critical flaw in the Linux kernel implementation within Qualcomm-based Android devices, specifically affecting products utilizing the Code Aurora Forum (CAF) kernel modifications. This issue stems from inadequate validation mechanisms during filesystem access operations, creating a potential pathway for unauthorized system access and data manipulation. The vulnerability impacts a broad range of mobile devices including smartphones, tablets, and other Android-based hardware that incorporates Qualcomm's Snapdragon processors and associated kernel components. The flaw exists at the kernel level, making it particularly dangerous as it operates within the core system architecture that governs all filesystem interactions and access controls.
The technical root cause of this vulnerability lies in the insufficient validation processes that occur during filesystem access operations within the Linux kernel implementation used by Qualcomm's Android products. When applications or system processes attempt to access filesystem resources, the kernel fails to properly validate the legitimacy of these access requests, potentially allowing malicious actors to bypass normal access controls. This weakness enables attackers to perform unauthorized read, write, or execute operations on filesystem elements that should otherwise be restricted. The vulnerability specifically affects the kernel's handling of filesystem access control lists and permission validation mechanisms, creating opportunities for privilege escalation and unauthorized system modifications. According to CWE classification, this corresponds to CWE-284: Improper Access Control, which describes insufficient access control mechanisms that allow unauthorized users to access system resources.
The operational impact of CVE-2015-0574 extends beyond simple filesystem access violations, as it creates potential pathways for broader system compromise. Attackers could exploit this vulnerability to access sensitive user data, modify system files, or potentially escalate privileges to gain root access on affected devices. The vulnerability affects all Android releases utilizing the CAF kernel, making it particularly concerning given the widespread adoption of Qualcomm processors in mobile devices. This flaw particularly impacts enterprise environments where mobile devices handle sensitive corporate data, as it could enable data exfiltration or system manipulation without proper authorization. The vulnerability's exploitation could result in complete device compromise, data loss, or unauthorized access to confidential information stored on or processed by affected devices.
Mitigation strategies for CVE-2015-0574 should focus on immediate kernel updates and patches provided by Qualcomm and device manufacturers. Organizations should implement comprehensive patch management procedures to ensure all affected devices receive timely security updates. The vulnerability requires kernel-level fixes that address the insufficient validation mechanisms, typically involving enhanced access control checks and improved filesystem permission validation. Device administrators should also consider implementing additional security controls such as application whitelisting, enhanced monitoring of filesystem access patterns, and regular security assessments to detect potential exploitation attempts. According to ATT&CK framework, this vulnerability aligns with techniques such as privilege escalation and credential access, making it particularly relevant for organizations implementing threat hunting and incident response procedures. Regular security audits and vulnerability assessments should be conducted to identify and remediate similar access control weaknesses in other system components and third-party software libraries.