CVE-2019-20569 in Samsung
Summary
by MITRE
An issue was discovered on Samsung mobile devices with P(9.0) software. Attackers can bypass Factory Reset Protection (FRP) via the status bar. The Samsung ID is SVE-2019-15089 (September 2019).
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Analysis
by VulDB Data Team • 10/04/2020
The vulnerability identified as CVE-2019-20569 represents a critical security flaw in Samsung mobile devices running Android Pie version 9.0 and later. This issue specifically affects the Factory Reset Protection mechanism that is designed to prevent unauthorized access to devices after a factory reset operation. The vulnerability allows attackers to bypass the FRP protection through manipulation of the status bar interface, which undermines the fundamental security controls intended to protect user data and device ownership. The flaw was documented under Samsung ID SVE-2019-15089 and reported in September 2019, highlighting a significant weakness in the device's security architecture that could be exploited by malicious actors.
The technical implementation of this vulnerability stems from insufficient validation mechanisms within the Android system's status bar handling functionality. When users attempt to perform factory resets on affected Samsung devices, the system should enforce strict authentication checks to verify legitimate ownership before allowing the reset process to proceed. However, the flaw enables attackers to manipulate the status bar elements to circumvent these authentication requirements. This bypass mechanism operates at the system level interface where the status bar communicates with the device's security subsystem, allowing unauthorized users to gain access to device functionality that should remain restricted to legitimate owners. The vulnerability essentially creates a backdoor through the user interface layer that can be exploited to disable or bypass the device's built-in security protections.
The operational impact of this vulnerability extends beyond simple privacy concerns to encompass significant data security risks and potential financial losses for device owners. When FRP protection is bypassed, attackers can effectively unlock devices that have been factory reset, potentially gaining access to sensitive personal information, financial data, and corporate secrets stored on the device. The implications are particularly severe for enterprise users and organizations that rely on mobile device security protocols, as stolen or lost devices could be easily compromised and exploited by unauthorized parties. This vulnerability directly impacts the security model that Samsung implements to protect against device theft and unauthorized access, potentially enabling large-scale data breaches and identity theft operations. The flaw affects the core security principle of device ownership verification and undermines the trust users place in their device's security features.
Mitigation strategies for this vulnerability require immediate action from Samsung to release security patches that address the status bar manipulation exploit. Users should be advised to avoid performing factory resets on devices running vulnerable software versions until patches are available, and to maintain awareness of their device's security status. The fix should involve strengthening the authentication protocols within the status bar interface to prevent unauthorized manipulation of security-related UI elements. Organizations should implement additional security measures such as remote wipe capabilities, enhanced encryption protocols, and regular security audits to protect against exploitation of this vulnerability. This issue aligns with CWE-284 Access Control vulnerabilities, specifically focusing on improper access control through user interface manipulation, and may be categorized under ATT&CK technique T1484.001 for Account Access Removal and T1490 for Inhibit System Recovery. The vulnerability demonstrates the importance of comprehensive security testing across all system interfaces, particularly those that handle critical security functions like device authentication and reset operations.