This describes a security vulnerability in Mobile Security Framework (MobSF), an automated mobile application security assessment tool used for penetration testing, malware analysis, and security auditing of Android, iOS, and Windows applications.
Understanding the Vulnerability:
- Affected Software: Mobile Security Framework (MobSF)
- Issue Type: Access Control Flaw
- Affected Users: Local users with minimal privileges
- Cause: The flaw is related to the misuse of access tokens, allowing unauthorized access to restricted scopes/materials.
- Impact: A low-privileged local user could bypass access controls and obtain materials that should not be accessible to them.
How It Works:
- MobSF uses an access token mechanism to control access to certain functions or resources.
- Due to improper validation, a local user with limited privileges can exploit the flaw to access restricted data or perform unauthorized actions.
- This violates the principle of least privilege (PoLP) and could lead to data leaks or unauthorized operations within the security framework.
Mitigation & Fix:
- Fixed Version: The issue has been patched in MobSF version 4.3.1.
- Action Required: All users are strongly advised to upgrade to version 4.3.1 to protect against this vulnerability.
- Workarounds: There are no known workarounds—upgrading is the only way to fix the issue.