Medium severity · published Jan 26, 2022
CVE-2021-41166
The Nextcloud Android app is the Android client for Nextcloud, a self-hosted productivity platform
5.3
CVSS
0.9%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.9% · higher than 61% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NE
Nextcloud · Nextcloud
before 3.17.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-41166
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-41166
Patch
https://github.com/nextcloud/android/commit/aa47197109970b8449c4e44601eba36e3481b086
Patch
https://github.com/nextcloud/android/commit/b6ecf515b38c2d82d32743f27236534f3e03ee0c
Patch
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-wrwg-jwpg-r3c4
Permissions Required
https://hackerone.com/reports/1358597
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