CVE-2023-35671 Explained : Impact and Mitigation
Understand the impact of CVE-2023-35671, an Android vulnerability that allows information disclosure via NFC, affecting versions 11 to 13. Learn mitigation steps & updates.
A detailed overview of CVE-2023-35671 focusing on the impact, technical details, and mitigation strategies involved.
Understanding CVE-2023-35671
This section provides insights into the vulnerability, its impact, and affected systems along with possible exploitation mechanisms.
What is CVE-2023-35671?
The vulnerability lies in onHostEmulationData of HostEmulationManager.java in Android. It allows general purpose NFC reader to access card details when the device is locked, leading to local information disclosure.
The Impact of CVE-2023-35671
The vulnerability could lead to potential local information disclosure without requiring extra execution privileges, posing a significant security risk.
Technical Details of CVE-2023-35671
Explore the specific technical aspects of the vulnerability, including its description, affected systems, and how it can be exploited.
Vulnerability Description
A logic error in the code allows a general purpose NFC reader to access full card numbers and expiry details even when the device is locked, potentially leading to sensitive information exposure.
Affected Systems and Versions
Google's Android versions 11, 12, 12L, and 13 are impacted by this vulnerability, highlighting the widespread nature of the issue.
Exploitation Mechanism
Due to the logic error in the code, a general purpose NFC reader can exploit the vulnerability without the need for user interaction, emphasizing the criticality of the issue.
Mitigation and Prevention
Discover the immediate steps and long-term security practices that can help mitigate the CVE-2023-35671 vulnerability and the importance of patching and updates.
Immediate Steps to Take
Users are advised to avoid using NFC functionality on locked screens and implement additional authentication measures to prevent unauthorized access to sensitive card information.
Long-Term Security Practices
Enforcing strict access controls, regular security audits, and keeping systems updated with the latest patches can help prevent similar vulnerabilities in the future.
Patching and Updates
Google Android users should prioritize installing security updates promptly to address CVE-2023-35671 and protect their devices from potential information disclosure risks.