CVE-2021-0596 Explained : Impact and Mitigation
Learn about CVE-2021-0596, an Android vulnerability in phNciNfc_RecvMfResp allowing remote information disclosure without user interaction. Find out the impact, affected systems, and mitigation steps.
A detailed overview of CVE-2021-0596 focusing on the impact, technical details, and mitigation strategies.
Understanding CVE-2021-0596
This section covers the essential information regarding the vulnerability identified as CVE-2021-0596.
What is CVE-2021-0596?
The CVE-2021-0596 vulnerability is located in phNciNfc_RecvMfResp of phNxpExtns_MifareStd.cpp. It is associated with a potential out-of-bounds read issue due to a missing bounds check. This flaw can result in remote information disclosure over NFC without requiring additional execution privileges. The affected product is Android, specifically versions Android-11, Android-8.1, Android-9, and Android-10.
The Impact of CVE-2021-0596
The impact of CVE-2021-0596 is significant as it could potentially lead to remote information disclosure over NFC without the need for user interaction. This opens up possibilities for unauthorized access and data exposure on affected devices.
Technical Details of CVE-2021-0596
In this section, we delve into the specifics of the vulnerability concerning CVE-2021-0596.
Vulnerability Description
The vulnerability in phNciNfc_RecvMfResp of phNxpExtns_MifareStd.cpp arises from a missing bounds check, allowing for an out-of-bounds read. This weakness may be exploited remotely over NFC.
Affected Systems and Versions
The impacted systems include Android operating systems running versions Android-11, Android-8.1, Android-9, and Android-10. Users with these versions are at risk of potential information disclosure.
Exploitation Mechanism
The vulnerability can be exploited remotely via NFC without the need for any additional execution privileges, enhancing the risk of data exposure.
Mitigation and Prevention
This section highlights the steps to mitigate and prevent the exploitation of CVE-2021-0596.
Immediate Steps to Take
Users are urged to apply security patches provided by the Android platform promptly. Implementing updates can help address the vulnerability and enhance the security of the system.
Long-Term Security Practices
Practicing good security hygiene, such as avoiding unknown NFC interactions and keeping devices up to date with the latest software patches, can reduce the risk of exploitation.
Patching and Updates
Regularly checking for and applying system updates, especially security patches released by Android, is crucial to protect devices from known vulnerabilities like CVE-2021-0596.