Overview
The vulnerability CVE-2025-22428 represents a significant flaw in the security architecture of certain software applications. This flaw can be exploited by malicious actors to escalate privileges across user accounts without needing any additional execution privileges or user interaction. The implications of this vulnerability are grave, as it could potentially lead to system compromise and data leakage.
Vulnerability Summary
CVE ID: CVE-2025-22428
Severity: High (CVSS: 7.8)
Attack Vector: Local
Privileges Required: None
User Interaction: None
Impact: Local escalation of privilege leading to potential system compromise and data leakage
Affected Products
Product | Affected Versions
[Insert product] | [Insert affected version]
[Insert product] | [Insert affected version]
How the Exploit Works
The exploit takes advantage of a logic error in the ‘hasInteractAcrossUsersFullPermission’ function of AppInfoBase.java. This error allows an application on the secondary user to gain permissions from the primary user. The flaw does not require any additional execution privileges, and the user does not need to interact with the application for the exploit to work. This makes the exploit particularly dangerous, as it can be executed silently in the background.
Conceptual Example Code
The following pseudocode illustrates the potential exploit:
public class MaliciousApp {
public void exploit() {
AppInfoBase app = getAppInfoBase();
if (app.hasInteractAcrossUsersFullPermission()) {
escalatePrivilege(app);
}
}
private AppInfoBase getAppInfoBase() {
// Return an instance of AppInfoBase.java
}
private void escalatePrivilege(AppInfoBase app) {
// Code to escalate privilege
}
}This pseudocode demonstrates how an application can check if it has ‘interactAcrossUsersFullPermission’ and then escalate its privileges if it does. The actual exploit would likely involve more complex code and use of obscure APIs to execute the privilege escalation. The example is simplified for understanding purposes.
Mitigation Guidance
The most effective way to mitigate this vulnerability is to apply the patch provided by the vendor. If a patch is not available, a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can be used as temporary mitigation. However, these measures only detect and prevent known exploit patterns, so they may not be fully effective. Therefore, applying the vendor’s patch as soon as it becomes available is strongly recommended.
