CVE-2018-12271 Explained : Impact and Mitigation
Discover the security flaw in the Dropbox iOS app version 100.2 allowing unauthorized access. Learn about the impact, affected systems, exploitation, and mitigation steps.
A vulnerability has been found in the iOS version of the com.getdropbox.Dropbox app 100.2 that allows unauthorized users to bypass authentication using the Biometric (TouchID) validation feature.
Understanding CVE-2018-12271
This CVE identifies a security issue in the Dropbox app for iOS that could potentially compromise user authentication.
What is CVE-2018-12271?
The vulnerability in the Dropbox app for iOS version 100.2 allows attackers to bypass authentication by manipulating the LAContext class and overriding the return value to "true," enabling access without proper authorization.
The Impact of CVE-2018-12271
The vulnerability poses a risk of unauthorized access to sensitive information for users of the affected iOS app version.
Technical Details of CVE-2018-12271
The technical aspects of the vulnerability are crucial for understanding its implications.
Vulnerability Description
- The issue lies in the Biometric (TouchID) validation feature of the Dropbox app for iOS version 100.2.
- By setting the LAContext return value to "true," unauthorized users can bypass authentication.
- Lack of utilization of the kSecAccessControlUserPresence protection mechanism allows attackers to authenticate using any fingerprint.
Affected Systems and Versions
- Product: com.getdropbox.Dropbox app
- Vendor: Not specified
- Versions affected: 100.2
Exploitation Mechanism
- Attackers exploit the LAContext class to manipulate the return value, granting unauthorized access.
- By overriding the LAContext return value to "true," attackers can bypass authentication using any fingerprint.
Mitigation and Prevention
Protecting systems from this vulnerability requires immediate actions and long-term security measures.
Immediate Steps to Take
- Update the Dropbox app to the latest version to mitigate the vulnerability.
- Avoid using biometric authentication until the app is patched.
Long-Term Security Practices
- Regularly update all applications to ensure the latest security patches are in place.
- Implement multi-factor authentication for enhanced security.
Patching and Updates
- Stay informed about security updates from the app vendor.
- Apply patches promptly to address known vulnerabilities.