CVE-2021-41166: Permission bypass in Nextcloud Android App
First published: Wed Jan 26 2022(Updated: )
The Nextcloud Android app is the Android client for Nextcloud, a self-hosted productivity platform. An issue in versions prior to 3.17.1 may lead to sensitive information disclosure. An unauthorized app that does not have the otherwise required `MANAGE_DOCUMENTS` permission may view image thumbnails for images it does not have permission to view. Version 3.17.1 contains a patch. There are no known workarounds.
Credit: security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Nextcloud Nextcloud | <3.17.1 |
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Reference Links
Frequently Asked Questions
What is CVE-2021-41166?
CVE-2021-41166 is a vulnerability in the Nextcloud Android app that may lead to sensitive information disclosure.
What is the severity of CVE-2021-41166?
The severity of CVE-2021-41166 is medium with a CVSS score of 5.3.
How does CVE-2021-41166 impact Nextcloud Android app?
CVE-2021-41166 in the Nextcloud Android app may allow an unauthorized app to view image thumbnails without the required permissions.
Which versions of the Nextcloud Android app are affected by CVE-2021-41166?
Versions prior to 3.17.1 of the Nextcloud Android app are affected by CVE-2021-41166.
How can I fix CVE-2021-41166?
To fix CVE-2021-41166, update the Nextcloud Android app to version 3.17.1 or newer.
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