CVE-2022-24886 Explained : Impact and Mitigation
Learn about CVE-2022-24886 affecting Nextcloud Android app versions before 3.19.0. Find out its impact, technical details, and mitigation steps.
Nextcloud Android app versions prior to 3.19.0 are vulnerable to exposure of sensitive information to an unauthorized actor. An attacker with notification permission can access contacts without applying for the Contacts permission. Version 3.19.0 addresses this issue.
Understanding CVE-2022-24886
This CVE involves the Nextcloud Android app, which is the client for the Nextcloud self-hosted productivity platform.
What is CVE-2022-24886?
The vulnerability allows any application with notification permission to access contacts if Nextcloud has access to Contacts without requesting the Contacts permission itself.
The Impact of CVE-2022-24886
The impact of this vulnerability is rated as LOW. It has low confidentiality impact, no integrity impact, and requires physical user interaction. The base score is 2.2.
Technical Details of CVE-2022-24886
Vulnerability Description
In versions prior to 3.19.0 of the Nextcloud Android app, there is a flaw that permits unauthorized access to contacts.
Affected Systems and Versions
The vulnerability affects Nextcloud Android app versions lower than 3.19.0.
Exploitation Mechanism
An attacker exploiting this vulnerability can access contacts through notifications without having explicit Contacts permission.
Mitigation and Prevention
Immediate Steps to Take
Users are strongly advised to update their Nextcloud Android app to version 3.19.0 or newer to mitigate this vulnerability.
Long-Term Security Practices
Ensure that all apps have the necessary permissions only and review permission settings regularly.
Patching and Updates
Stay informed about security advisories and apply patches promptly to prevent potential exploitation.