CVE-2021-30956 Explained : Impact and Mitigation
Discover how CVE-2021-30956 poses a risk to iOS and iPadOS users, allowing unauthorized access to contacts on locked devices prior to version 15.2. Learn about the impacts, technical details, and mitigation measures against this security flaw.
A lock screen issue in iOS and iPadOS allowed unauthorized access to contacts on a locked device, potentially exposing private information. The issue has been addressed in iOS 15.2 and iPadOS 15.2.
Understanding CVE-2021-30956
This vulnerability, identified as CVE-2021-30956, impacts Apple's iOS and iPadOS, allowing attackers physical access to view confidential contact details even when the device is locked.
What is CVE-2021-30956?
The CVE-2021-30956 vulnerability in iOS and iPadOS versions less than 15.2 enables unauthorized access to contacts on a locked device, posing a risk of private data exposure.
The Impact of CVE-2021-30956
The security flaw may allow threat actors with physical proximity to a device to extract sensitive contact information without authentication, potentially breaching user privacy.
Technical Details of CVE-2021-30956
The vulnerability arises from a lock screen issue in iOS and iPadOS that inadequately protected contact data on locked devices, leading to unauthorized contact information access.
Vulnerability Description
A flaw in state management on the lock screen interface allowed the bypass of security measures, enabling access to contacts on a locked iOS or iPadOS device.
Affected Systems and Versions
iOS and iPadOS versions prior to 15.2 are impacted by this vulnerability. Devices running these versions are susceptible to unauthorized contact access when locked.
Exploitation Mechanism
An attacker in physical possession of a vulnerable device can exploit the security loophole to view private contact information without valid credentials.
Mitigation and Prevention
To safeguard against CVE-2021-30956, immediate action and long-term security practices are recommended by Apple.
Immediate Steps to Take
Users should update their iOS and iPadOS devices to version 15.2 or later to mitigate the risk of unauthorized access to contacts on locked devices.
Long-Term Security Practices
Maintaining device security through regular software updates, secure access controls, and prudent handling of personal devices can enhance overall security posture.
Patching and Updates
Apple has addressed the CVE-2021-30956 vulnerability in iOS 15.2 and iPadOS 15.2, ensuring that contact information on locked devices is no longer accessible to unauthorized users.