{"id":85174,"date":"2025-10-31T14:47:16","date_gmt":"2025-10-31T14:47:16","guid":{"rendered":""},"modified":"2025-11-02T06:37:37","modified_gmt":"2025-11-02T12:37:37","slug":"cve-2025-48541-potential-local-privilege-escalation-through-biometric-unlock-removal","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-48541-potential-local-privilege-escalation-through-biometric-unlock-removal\/","title":{"rendered":"CVE-2025-48541: Potential Local Privilege Escalation Through Biometric Unlock Removal<\/strong>"},"content":{"rendered":"

Overview<\/strong><\/p>\n

This report analyses the cybersecurity vulnerability, CVE-2025-48541, a flaw that exists in the onCreate function of FaceSettings.java. It potentially allows the removal of biometric unlock across user profiles due to inadequate input validation, leading to a local escalation of privilege. This vulnerability is of significant concern to all users and organizations that employ biometric authentication, as it could lead to system compromise or data<\/a> leakage.<\/p>\n

Vulnerability Summary<\/strong><\/p>\n

CVE ID: CVE-2025-48541
\nSeverity: High (7.8 on the CVSS Severity Scale)
\nAttack Vector: Local
\nPrivileges Required: None
\nUser Interaction: None
\nImpact: System compromise<\/a>, potential data leakage<\/p>\n

Affected Products<\/strong><\/p>\n

Product | Affected Versions<\/p>\n

Android Biometric API | Unknown (pending vendor disclosure)<\/p>\n

How the Exploit Works<\/strong><\/p>\n

The exploit takes advantage of improper input validation in the onCreate function of FaceSettings.java. This function is designed to initialize face settings for biometric unlock on the device. However, an attacker can leverage this vulnerability to inject<\/a> improper inputs that could manipulate the application logic and potentially remove biometric unlock across different user profiles. This could lead to the attacker gaining unauthorized<\/a> access to the device contents and potentially escalate their privileges.<\/p>\n

Conceptual Example Code<\/strong><\/p>\n

Here’s a
\nconceptual<\/strong>
\n example of how the vulnerability might be exploited. This pseudo code demonstrates a potential method of injecting<\/a> improper inputs:<\/p>\n

\/\/ Pseudocode\nimport android.hardware.biometrics;\nclass Exploit {\npublic static void main(String[] args) {\nBiometricManager biometricManager = BiometricManager.from(context);\nif(biometricManager.canAuthenticate() == BiometricManager.BIOMETRIC_SUCCESS) {\n\/\/ Executing improper input to remove biometric unlock\nbiometricManager.removeBiometricUnlock(UserManager.DISALLOW_REMOVE_USER);\n}\n}\n}<\/code><\/pre>\n
Remember, this code is hypothetical and only serves to help understand the potential exploit. Always follow ethical guidelines when dealing with cybersecurity.<\/p>\n
Mitigation Guidance<\/strong><\/p>\n
To mitigate this vulnerability, users are advised to apply the vendor patch once it becomes available. Until then, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as a temporary mitigation measure.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview This report analyses the cybersecurity vulnerability, CVE-2025-48541, a flaw that exists in the onCreate function of FaceSettings.java. It potentially allows the removal of biometric unlock across user profiles due to inadequate input validation, leading to a local escalation of privilege. This vulnerability is of significant concern to all users and organizations that employ biometric […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[1],"tags":[],"vendor":[91],"product":[],"attack_vector":[76],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-85174","post","type-post","status-publish","format-standard","hentry","category-uncategorized","vendor-google","attack_vector-privilege-escalation"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t