# CVE-2021-32695: Malicious Android app could access Shared Preferences of the Nextcloud Android client

> A malicious Android app could access limited private data from the Nextcloud client's shared preferences if the user initiated a sharing flow.

- **Severity:** Low 3.9 (`CVSS:3.1/AV:P/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 17 Jun 2021
- **Updated:** 3 Aug 2024
- **Also known as:** BIT-nextcloud-2021-32695, GHSA-25m9-cf6c-qf2c

## What is CVE-2021-32695?

CVE-2021-32695 is a low-severity vulnerability in nextcloud security-advisories, published on 17 Jun 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

Nextcloud Android app is the Android client for Nextcloud. In versions prior to 3.16.1, a malicious app on the same device could have gotten access to the shared preferences of the Nextcloud Android application. This required user-interaction as a victim had to initiate the sharing flow and choose the malicious app. The shared preferences contain some limited private data such as push tokens and the account name. The vulnerability is patched in version 3.16.1.

Weakness: CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor)

## Which versions are affected by CVE-2021-32695?

1 open source package ship an affected version, including nextcloud. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `nextcloud` | Bitnami | All versions | 3.16.1 |

Products: Nextcloud Nextcloud.

## How do I fix CVE-2021-32695?

Upgrade nextcloud to 3.16.1 or later.

## Is CVE-2021-32695 being exploited?

There is no known exploitation of CVE-2021-32695 in the wild and no public exploit code.

## Other vulnerabilities in nextcloud security-advisories

- [CVE-2019-5454](https://insights.sbomify.com/CVE-2019-5454/): SQL injection in com.nextcloud.client (critical 9.8)
- [CVE-2021-43863](https://insights.sbomify.com/CVE-2021-43863/): SQL Injection in FileContentProvider (GHSL-2021-1007) (high 7.5)
- [CVE-2019-5450](https://insights.sbomify.com/CVE-2019-5450/): Cross-site scripting in com.nextcloud.client (medium 6.8)
- [CVE-2019-5455](https://insights.sbomify.com/CVE-2019-5455/): Auth bypass in com.nextcloud.client (medium 6.8)
- [CVE-2021-22905](https://insights.sbomify.com/CVE-2021-22905/): Information disclosure in Nextcloud Android App (com.nextcloud.client) (medium 6.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-32695 and fix it if it is affected.

What it is: CVE-2021-32695 is a low-severity vulnerability in nextcloud security-advisories, published on 17 Jun 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2021-32695 in the wild and no public exploit code.

Affected packages and fixed versions:
- nextcloud (Bitnami): affected all versions; fixed in 3.16.1

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2021-32695/ (Markdown: https://insights.sbomify.com/CVE-2021-32695/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-32695
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-32695
- OSV: https://osv.dev/vulnerability/CVE-2021-32695

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-32695/
Summaries are generated and may contain mistakes; the official description above is the record.