CVE-2022-24924 in Samsung
Summary
by MITRE • 02/11/2022
An improper access control in LiveWallpaperService prior to versions 3.0.9.0 allows to create a specific named system directory without a proper permission.
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Analysis
by VulDB Data Team • 02/17/2022
The vulnerability identified as CVE-2022-24924 represents a critical improper access control flaw within the LiveWallpaperService component of a mobile application or system framework. This issue affects versions prior to 3.0.9.0 and stems from insufficient permission checks during the creation of system directories. The flaw specifically allows unauthorized processes to create named system directories without proper authorization, potentially enabling malicious actors to manipulate system resources or establish persistent footholds within the device environment. Such access control bypasses represent a fundamental failure in the security model of the affected service.
The technical implementation of this vulnerability occurs at the system directory creation level where the LiveWallpaperService fails to validate whether the calling process possesses adequate permissions to create directories in protected system locations. This weakness falls under the CWE-284 access control weakness category, specifically manifesting as inadequate access control enforcement. The service likely operates with elevated privileges but fails to properly authenticate or authorize requests for directory creation operations, allowing any process with access to the service to potentially create directories in system-protected areas. This misconfiguration creates an attack surface where malicious applications or compromised processes can exploit the service to establish unauthorized system presence.
The operational impact of this vulnerability extends beyond simple directory creation, as it enables potential privilege escalation and persistent system compromise. Attackers could leverage this flaw to create malicious system directories that might be executed or loaded by the system at startup, establishing persistence mechanisms. The vulnerability could also enable attackers to manipulate system resources, inject malicious code, or interfere with normal system operations. From an attacker's perspective, this represents a significant foothold that could be combined with other vulnerabilities to achieve broader system compromise. The ATT&CK framework would categorize this under privilege escalation techniques, specifically leveraging service manipulation and persistence mechanisms.
Mitigation strategies for CVE-2022-24924 require immediate implementation of proper access control validation within the LiveWallpaperService component. System administrators should ensure all affected devices are updated to version 3.0.9.0 or later where the access control checks have been properly implemented. Additionally, organizations should conduct thorough security assessments to identify any unauthorized system directories that may have been created through exploitation of this vulnerability. The fix should implement proper permission validation before allowing any directory creation operations, ensuring that only authorized processes can create system directories. Security monitoring should be enhanced to detect unusual directory creation patterns in protected system areas, as this vulnerability could be exploited to establish backdoors or malicious persistence mechanisms. Regular security audits of system services and their permission models should be conducted to prevent similar access control flaws from being introduced in future implementations.