SQL Injection in Nextcloud Android
CVE-2021-43863
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.
Vulnerability class: SQL Injection
EPSS: 0.019 (77.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
Affected products
- Nextcloud Android — versions < 3.18.1
- Nextcloud
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Third Party Advisory)
- security-advisories@github.com (Patch, Third Party Advisory, x_refsource_MISC)
- security-advisories@github.com (Permissions Required, x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-43863?
- CVE-2021-43863 is a high-severity vulnerability in Nextcloud Android, classified under SQL Injection. CVSS score: 7.5/10. Published 2022-01-25.
- How severe is CVE-2021-43863?
- High severity. CVSS v3 base score is 7.5 out of 10.