CVE-2021-22905 : What You Need to Know
Discover the impact of CVE-2021-22905, a vulnerability in Nextcloud Android App allowing information disclosure. Learn about affected versions, exploitation, and mitigation.
Nextcloud Android App (com.nextcloud.client) before version 3.16.0 is at risk of information disclosure. By default, share searches are conducted on the lookup server, exposing data unless users opt for local searches.
Understanding CVE-2021-22905
This CVE pertains to a vulnerability in the Nextcloud Android App that could lead to information disclosure due to default search behavior.
What is CVE-2021-22905?
The CVE-2021-22905 vulnerability affects Nextcloud's Android App, allowing information disclosure through default share searches on the lookup server instead of the local server.
The Impact of CVE-2021-22905
The vulnerability could enable unauthorized access to sensitive information shared through the Nextcloud Android App, potentially compromising user data.
Technical Details of CVE-2021-22905
This section provides insight into the vulnerability's description, affected systems and versions, and exploitation mechanism.
Vulnerability Description
Before version 3.16.0, the Nextcloud Android App performs share searches by default on the lookup server, potentially revealing sensitive data unless users explicitly choose local searches.
Affected Systems and Versions
Nextcloud Android App versions prior to 3.16.0 are impacted by this vulnerability, with the issue being resolved in version 3.16.0.
Exploitation Mechanism
Attackers can exploit this vulnerability by leveraging the default search behavior of the app, bypassing local servers to access confidential information.
Mitigation and Prevention
To safeguard against CVE-2021-22905, immediate actions and long-term security measures are essential.
Immediate Steps to Take
Users are advised to update the Nextcloud Android App to version 3.16.0 or newer to mitigate the risk of information disclosure.
Long-Term Security Practices
Regularly updating the application and following security best practices, such as avoiding sensitive data sharing, can enhance protection against future vulnerabilities.
Patching and Updates
Nextcloud users should ensure timely installation of patches and updates to stay protected from potential security threats.