CVE-2021-0997 : Vulnerability Insights and Analysis
Understand CVE-2021-0997, a critical Android-12 vulnerability allowing APN disclosure without additional privileges. Learn about impacts, technical details, and mitigation steps.
This article provides detailed information about CVE-2021-0997, a vulnerability impacting Android-12 leading to potential APN disclosure. Learn about the impact, technical details, and mitigation steps to secure affected systems.
Understanding CVE-2021-0997
CVE-2021-0997 is a vulnerability in Android-12 that could result in APN disclosure due to log information leakage, potentially leading to local information exposure without requiring additional execution privileges.
What is CVE-2021-0997?
The vulnerability exists in handleUpdateNetworkState of GnssNetworkConnectivityHandler.java in Android-12. It poses a risk of disclosing APN information, potentially allowing local information exposure without the need for user interaction.
The Impact of CVE-2021-0997
The impact of this vulnerability lies in the disclosure of sensitive APN data, which could lead to local information exposure. Exploitation does not require any additional execution privileges, making it a critical security concern.
Technical Details of CVE-2021-0997
The technical details of CVE-2021-0997 encompass the vulnerability description, affected systems and versions, and exploitation mechanism.
Vulnerability Description
The vulnerability in GnssNetworkConnectivityHandler.java could lead to APN disclosure, resulting in local information exposure.
Affected Systems and Versions
The affected system is Android-12. Users running this version are at risk of APN disclosure.
Exploitation Mechanism
Exploitation of this vulnerability does not require user interaction, making it a potential target for threat actors seeking sensitive information.
Mitigation and Prevention
To protect systems from CVE-2021-0997, immediate steps should be taken along with long-term security practices and timely patching.
Immediate Steps to Take
Immediately review and apply patches released by the vendor. Monitor network logs for any suspicious activity that may indicate exploitation.
Long-Term Security Practices
Enhance network security protocols, restrict access to sensitive data, and educate users on data privacy and security best practices.
Patching and Updates
Regularly update and patch systems to ensure they are protected against known vulnerabilities.