Overview
A high-severity vulnerability, CVE-2025-22434, has been identified in PhoneWindowManager.java that allows for a lock screen bypass due to a logic flaw in the code. This vulnerability poses a significant threat to systems that rely on this software, potentially leading to local escalation of privilege and compromising the system or leading to data leakage.
Vulnerability Summary
CVE ID: CVE-2025-22434
Severity: High (7.8 CVSS Score)
Attack Vector: Local
Privileges Required: None
User Interaction: None
Impact: System compromise and potential data leakage
Affected Products
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Product | Affected Versions
PhoneWindowManager.java | All versions prior to patch
How the Exploit Works
The vulnerability exists due to a logic error in the handleKeyGestureEvent of PhoneWindowManager.java. This flaw allows attackers to bypass the lock screen without requiring additional execution privileges or user interaction. The exploit could be used to escalate privileges locally and potentially gain unauthorized access to sensitive data or system resources.
Conceptual Example Code
The following is a conceptual representation of how this vulnerability might be exploited. This is not actual exploit code, but merely illustrates the kind of approach an attacker might take:
public void exploitLockScreenBypass() {
PhoneWindowManager pwm = new PhoneWindowManager();
// bypass lock screen
pwm.handleKeyGestureEvent(new KeyGestureEvent("BYPASS_LOCK"));
// escalate privileges
pwm.escalatePrivileges();
}Mitigation and Recommendations
A patch for this vulnerability should be applied from the vendor as soon as it becomes available. In the meantime, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) may serve as a temporary mitigation. It is also recommended to follow best practices in secure coding to avoid such logic errors in the future.
