CVE-2021-43863: SQL Injection in FileContentProvider (GHSL-2021-1007)
The Nextcloud Android app is the Android client for Nextcloud, a self-hosted productivity platform. The Nextcloud Android app uses content providers to manage its data. Prior to version 3.18.1, the providers FileContentProvider and DiskLruImageCacheFileProvider have security issues (an SQL injection, and an insufficient permission control, respectively) that allow malicious apps in the same device to access Nextcloud's data bypassing the permission control system. Users should upgrade to version 3.18.1 to receive a patch. There are no known workarounds aside from upgrading.
Affected Software
Remediation
Event History
Frequently Asked Questions
What is CVE-2021-43863?
CVE-2021-43863 is a security vulnerability in the Nextcloud Android app that allows for SQL injection attacks.
How does CVE-2021-43863 affect Nextcloud Android app?
CVE-2021-43863 affects Nextcloud Android app versions up to and excluding 3.18.1.
What is the severity of CVE-2021-43863?
CVE-2021-43863 has a severity rating of 7.5, which is considered high.
How can I fix CVE-2021-43863?
To fix CVE-2021-43863, upgrade your Nextcloud Android app to version 3.18.1 or newer.
Where can I find more information about CVE-2021-43863?
You can find more information about CVE-2021-43863 in the references provided: [GitHub Commit](https://github.com/nextcloud/android/commit/627caba60e69e223b0fc89c4cb18eaa76a95db95), [GitHub Security Advisories](https://github.com/nextcloud/android/security/advisories/GHSA-vjp2-f63v-w479), [HackerOne Report](https://hackerone.com/reports/1358597).