# CVE-2021-4438: React Native Sms User Consent Intent Redirection Vulnerability

> Local attackers can access SMS consent data due to improperly exported Android components in the react-native-sms-user-consent library.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/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:** Not needed
- **Fix available:** Yes
- **Published:** 7 Apr 2024
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-r956-2553-vvhr

## What is CVE-2021-4438?

CVE-2021-4438 is a medium-severity missing authorization vulnerability in kyivstarteam react-native-sms-user-consent, published on 7 Apr 2024. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A vulnerability, which was classified as critical, has been found in kyivstarteam react-native-sms-user-consent up to 1.1.4 on Android. Affected by this issue is the function registerReceiver of the file android/src/main/java/ua/kyivstar/reactnativesmsuserconsent/SmsUserConsentModule.kt. The manipulation leads to improper export of android application components. Attacking locally is a requirement. Upgrading to version 1.1.5 is able to address this issue. The name of the patch is 5423dcb0cd3e4d573b5520a71fa08aa279e4c3c7. It is recommended to upgrade the affected component. The identifier of this vulnerability is VDB-259508.

Weakness: CWE-926 (Improper Export of Android Application Components)

## Which versions are affected by CVE-2021-4438?

2 open source packages ship an affected version, including @kyivstarteam/react-native-sms-user-consent. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `@kyivstarteam/react-native-sms-user-consent` | npm | All versions | 1.1.5 |
| `@kyivstarteam/react-native-sms-user-consent` | npm | All versions | 1.1.5 |

Products: Kyivstar React Native Sms User Consent.

## How do I fix CVE-2021-4438?

Upgrade @kyivstarteam/react-native-sms-user-consent to 1.1.5 or later.

## Is CVE-2021-4438 being exploited?

There is no known exploitation of CVE-2021-4438 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-4438 and fix it if it is affected.

What it is: CVE-2021-4438 is a medium-severity missing authorization vulnerability in kyivstarteam react-native-sms-user-consent, published on 7 Apr 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-4438 in the wild and no public exploit code.

Affected packages and fixed versions:
- @kyivstarteam/react-native-sms-user-consent (npm): affected all versions; fixed in 1.1.5
- @kyivstarteam/react-native-sms-user-consent (npm): affected all versions; fixed in 1.1.5

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-2021-4438/ (Markdown: https://insights.sbomify.com/CVE-2021-4438/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-4438
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-4438
- OSV: https://osv.dev/vulnerability/CVE-2021-4438

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From sbomify Insights: https://insights.sbomify.com/CVE-2021-4438/
Summaries are generated and may contain mistakes; the official description above is the record.