CVE-2019-20530 in Samsung
Summary
by MITRE
An issue was discovered on Samsung mobile devices with N(7.1), O(8.x), P(9.0), and Q(10.0) software. Arbitrary code execution is possible on the lock screen. The Samsung ID is SVE-2019-15266 (December 2019).
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Analysis
by VulDB Data Team • 10/04/2020
This vulnerability represents a critical security flaw in Samsung's mobile operating systems affecting versions n7.1, o8.x, p9.0, and q10.0. The issue allows for arbitrary code execution while the device is locked, presenting a significant risk to user data and device integrity. The vulnerability was identified through Samsung's internal security assessment process and assigned the identifier SVE-2019-15266. This type of flaw falls under the category of privilege escalation vulnerabilities that can be exploited without requiring user interaction or authentication. The security implications are particularly severe because the attack surface extends to the lock screen environment where users typically assume their device is secure. The vulnerability likely stems from insufficient input validation or improper access controls within the system's security framework, allowing malicious actors to execute code with elevated privileges.
The technical exploitation of this vulnerability occurs through a specific code path that bypasses the normal security boundaries between the lock screen and the underlying operating system. Attackers can leverage this weakness to gain unauthorized access to system resources and potentially escalate privileges to full administrative control. This vulnerability aligns with CWE-284, which describes improper access control issues, and may also relate to CWE-787, representing out-of-bounds write conditions that could enable code execution. The attack vector typically involves crafting specific inputs or sequences that trigger the vulnerable code path, which then allows execution of malicious payloads. The lock screen environment presents a unique challenge because it operates with reduced security checks while still maintaining access to core system functions. This creates an attack surface that is particularly dangerous since users may not be actively monitoring their device when such attacks occur.
The operational impact of this vulnerability extends beyond simple data theft or device compromise. Mobile devices running affected Samsung software versions become potential entry points for more sophisticated attacks, including persistent surveillance, data exfiltration, and lateral movement within corporate networks. Organizations using Samsung devices for business purposes face increased risk of insider threats, corporate espionage, and compliance violations. The vulnerability can be exploited by attackers without requiring physical access to the device, making it particularly concerning for high-value targets. Users may unknowingly expose their personal information, financial data, and sensitive communications to unauthorized parties. The attack can occur silently in the background while the device appears to be functioning normally, making detection and prevention extremely challenging. This vulnerability also affects the overall security posture of the mobile ecosystem and can undermine user trust in the platform's security guarantees.
Mitigation strategies for this vulnerability require immediate action from Samsung users and organizations. The most effective immediate response is to install the latest security patches and updates released by Samsung to address the specific flaw. System administrators should implement comprehensive mobile device management policies that enforce regular security updates and monitor for signs of compromise. Network monitoring solutions should be enhanced to detect anomalous behavior that might indicate exploitation attempts. Organizations should consider implementing additional security layers such as application whitelisting, device encryption, and remote wipe capabilities. The security community recommends maintaining a robust incident response plan that includes procedures for handling mobile device compromises. Users should be educated about the risks of connecting to untrusted networks and the importance of keeping devices updated. Regular security assessments should be conducted to identify similar vulnerabilities in other system components. The remediation process should also include monitoring for related vulnerabilities that may have been discovered through the same attack vectors. This vulnerability highlights the importance of continuous security monitoring and rapid response capabilities in mobile environments where traditional security boundaries may be less defined.