CVE-2023-47355 in com.eypcnnapps.quickreboot
Summary
by MITRE • 02/05/2024
The com.eypcnnapps.quickreboot (aka Eyuep Can Yilmaz {ROOT] Quick Reboot) application 1.0.8 for Android has exposed broadcast receivers for PowerOff, Reboot, and Recovery (e.g., com.eypcnnapps.quickreboot.widget.PowerOff) that are susceptible to unauthorized broadcasts because of missing input validation.
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Analysis
by VulDB Data Team • 02/29/2024
The vulnerability identified as CVE-2023-47355 affects the Eyuep Can Yilmaz {ROOT] Quick Reboot Android application version 1.0.8, presenting a significant security risk through improperly configured broadcast receivers. This application exposes three critical broadcast receivers named PowerOff, Reboot, and Recovery, which are designed to handle system-level operations typically restricted to authorized components. The vulnerability stems from the absence of proper input validation mechanisms within these receivers, creating an attack surface where malicious actors can send unauthorized broadcasts to trigger system-level actions without proper authentication or authorization.
The technical flaw manifests through the lack of validation checks on incoming broadcast intents that these receivers accept. When an Android application exposes broadcast receivers without proper security controls, it creates a pathway for privilege escalation attacks where untrusted entities can manipulate the system behavior. This vulnerability directly relates to CWE-284, which addresses improper access control in software systems, and represents a classic example of insufficient input validation that allows attackers to bypass intended security boundaries. The exposed receivers operate with elevated privileges since they are designed to perform system-level operations such as powering off devices, rebooting systems, or entering recovery mode, making them particularly attractive targets for malicious actors seeking to disrupt system operations or gain unauthorized control.
The operational impact of this vulnerability extends beyond simple unauthorized system actions, as it can be exploited to create persistent disruptions in device functionality or potentially enable more sophisticated attacks. Attackers could leverage these exposed receivers to perform unauthorized reboots, power off devices at will, or force systems into recovery mode, which could result in data loss, service disruption, or denial of service conditions. From an attacker perspective, this vulnerability aligns with ATT&CK technique T1547.001, which involves the abuse of system services and privileges, and represents a form of privilege escalation that could lead to complete system compromise. The vulnerability is particularly concerning because it operates at the system level where unauthorized access could result in permanent device damage or complete system lockout.
Mitigation strategies for this vulnerability should focus on implementing proper input validation and access control mechanisms within the application. Developers must ensure that broadcast receivers are configured with appropriate intent filters that restrict which components can send broadcasts to these sensitive receivers. The recommended approach includes implementing proper permission checks, validating all incoming broadcast data, and ensuring that only authorized system components can interact with these receivers. Additionally, the application should be updated to remove or properly secure these exposed receivers, with the use of signature verification for incoming broadcasts and proper sandboxing of system-level operations. Organizations should also consider implementing network-level monitoring to detect unauthorized broadcast attempts and establish proper application security testing procedures that include static code analysis for exposed system components. The vulnerability underscores the importance of following secure coding practices as outlined in OWASP Mobile Top 10 and Android Security Best Practices, particularly regarding the exposure of system-level components and the implementation of proper access controls for privileged operations.