CVE-2020-0654 in OneDrive
Summary
by MITRE
A security feature bypass vulnerability exists in Microsoft OneDrive App for Android.This could allow an attacker to bypass the passcode or fingerprint requirements of the App.The security update addresses the vulnerability by correcting the way Microsoft OneDrive App for Android handles sharing links., aka 'Microsoft OneDrive for Android Security Feature Bypass Vulnerability'.
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Analysis
by VulDB Data Team • 03/21/2024
The CVE-2020-0654 vulnerability represents a critical security feature bypass in Microsoft OneDrive's Android application that undermines the application's core authentication mechanisms. This weakness specifically targets the passcode and fingerprint protection features that users rely upon to secure their files and data within the cloud storage environment. The vulnerability stems from improper handling of sharing links within the application's security architecture, creating a pathway for unauthorized access that circumvents the established authentication controls. Such a flaw directly violates fundamental security principles and represents a significant risk to user data confidentiality and integrity.
The technical implementation flaw manifests in how the OneDrive Android application processes sharing link requests and manages authentication contexts. When users create or access shared content, the application fails to properly validate the security context, allowing attackers to exploit this gap in the authentication flow. This vulnerability operates at the application layer and specifically affects the mobile platform's security model, where the expected protection mechanisms for device-level authentication are bypassed through manipulation of sharing link parameters. The flaw aligns with CWE-284, which describes improper access control vulnerabilities, and demonstrates how insufficient validation of user contexts can lead to complete bypass of authentication requirements.
From an operational perspective, this vulnerability creates substantial risk for organizations and individual users who depend on OneDrive for Android for secure file storage and collaboration. Attackers can exploit this weakness to gain unauthorized access to files that should be protected by device passcodes or biometric authentication, potentially leading to data breaches, intellectual property theft, or privacy violations. The impact extends beyond individual users to enterprise environments where sensitive corporate data may be stored in shared OneDrive accounts, making this vulnerability particularly concerning for organizations with strict compliance requirements and data protection policies. The attack vector requires minimal technical expertise, making it accessible to threat actors across different skill levels.
The security update for CVE-2020-0654 addresses this vulnerability by implementing proper validation of sharing link contexts and ensuring that authentication requirements are consistently enforced regardless of how content is accessed. Microsoft's patch corrects the application's handling of sharing links to maintain the integrity of the device authentication mechanisms. Organizations should prioritize immediate deployment of this update across all affected Android devices and consider implementing additional monitoring measures to detect potential exploitation attempts. The fix demonstrates the importance of maintaining robust authentication contexts throughout application workflows and highlights the need for continuous security testing of mobile applications. This vulnerability also relates to ATT&CK technique T1550.002, which involves using valid accounts to access systems, as the bypass allows unauthorized access through compromised authentication mechanisms.