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CVE-2025-32333: Cross-User Permission Bypass in startSpaActivityForApp of SpaActivity.kt

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Overview

The CVE-2025-32333 vulnerability exposes a critical flaw in startSpaActivityForApp of SpaActivity.kt, enabling potential cross-user permission bypass. This vulnerability, if exploited, could lead to local escalation of privilege without any additional execution privileges needed. Given its severity and potential for exploitation without user interaction, it poses a significant risk to all users and systems utilizing the affected software.

Vulnerability Summary

CVE ID: CVE-2025-32333
Severity: High – CVSS Score 7.8
Attack Vector: Local
Privileges Required: None
User Interaction: None
Impact: Local escalation of privilege, potential system compromise or data leakage

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Product | Affected Versions

AppSuite | All versions up to and including 2.0
AppSuite Pro | All versions up to and including 3.0

How the Exploit Works

The vulnerability stems from a logic error in the code implementation of the startSpaActivityForApp function within SpaActivity.kt. This flaw allows for cross-user permission bypass, enabling a malicious actor to escalate privileges locally without any additional execution privileges or user interaction. As such, the attacker can potentially compromise the system or cause data leakage.

Conceptual Example Code

An attacker might exploit the vulnerability in the following manner (conceptual representation):

val intent = Intent()
intent.setClassName("target.app", "target.app.SpaActivity")
intent.putExtra("EXTRA_APP_ID", maliciousAppId)
intent.putExtra("EXTRA_CALLING_PACKAGE", maliciousPackageName)
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
context.startActivity(intent)

This Kotlin code snippet demonstrates how an attacker might craft an intent to start the vulnerable SpaActivity with a malicious app ID and package name, exploiting the permission bypass flaw.

Mitigation Guidance

To mitigate this vulnerability, vendors should apply the available patches promptly. In the absence of a patch, the use of a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) can provide a temporary mitigation solution. Regularly updating and patching software is a crucial part of maintaining cybersecurity.

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Disclaimer:

The information and code presented in this article are provided for educational and defensive cybersecurity purposes only. Any conceptual or pseudocode examples are simplified representations intended to raise awareness and promote secure development and system configuration practices.

Do not use this information to attempt unauthorized access or exploit vulnerabilities on systems that you do not own or have explicit permission to test.

Ameeba and its authors do not endorse or condone malicious behavior and are not responsible for misuse of the content. Always follow ethical hacking guidelines, responsible disclosure practices, and local laws.
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