CVE-2021-0995 : What You Need to Know
Learn about CVE-2021-0995, a critical Android 12 vulnerability allowing unauthorized access to app installation status, posing an information disclosure risk. Find out the impact, affected systems, and mitigation steps.
A vulnerability, known as CVE-2021-0995, affects Android 12, allowing an attacker to determine if an app is installed without requiring query permissions. This information disclosure issue could lead to local data exposure, requiring no additional execution privileges and no user interaction for exploitation.
Understanding CVE-2021-0995
This section will delve into the details of CVE-2021-0995, including its impact, technical description, affected systems, exploitation mechanism, and mitigation strategies.
What is CVE-2021-0995?
The vulnerability in registerSuggestionConnectionStatusListener of WifiServiceImpl.java allows unauthorized access to app installation status, resulting in potential data leakage without the need for user permission.
The Impact of CVE-2021-0995
CVE-2021-0995 poses a threat by enabling attackers to gather sensitive information without user consent, leading to local data exposure.
Technical Details of CVE-2021-0995
Let's explore the technical aspects of CVE-2021-0995 to understand how this vulnerability can be exploited.
Vulnerability Description
The flaw in WifiServiceImpl.java facilitates unauthorized disclosure of app installation status, creating a pathway for data leakage.
Affected Systems and Versions
Android 12 is confirmed to be vulnerable to CVE-2021-0995, potentially impacting devices running this specific version.
Exploitation Mechanism
By leveraging the registerSuggestionConnectionStatusListener, threat actors can determine app presence without user permission, escalating the risk of local data exposure.
Mitigation and Prevention
To safeguard against CVE-2021-0995, implementing immediate measures and adopting long-term security practices is essential.
Immediate Steps to Take
Users are advised to stay vigilant and monitor security bulletins while applying necessary security patches and updates promptly.
Long-Term Security Practices
Practicing strong security hygiene, such as restricting unnecessary app permissions and staying informed about security best practices, can lower the risk of exploitation.
Patching and Updates
Regularly checking for system updates and promptly installing patches provided by the vendor can help mitigate the CVE-2021-0995 vulnerability.