# CVE-2021-20018: Information disclosure in SMA100

> An authenticated attacker can export the configuration file to an email address, exposing sensitive device settings.

- **Severity:** Medium 4.9 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 13 Mar 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-h7wr-5x75-2c5h

## What is CVE-2021-20018?

CVE-2021-20018 is a medium-severity vulnerability in SonicWall SMA100, published on 13 Mar 2021. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

A post-authenticated vulnerability in SonicWall SMA100 allows an attacker to export the configuration file to the specified email address. This vulnerability impacts SMA100 version 10.2.0.5 and earlier.

Weakness: CWE-287 (Improper Authentication), CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor)

## Which versions are affected by CVE-2021-20018?

It affects 1 product.


Products: Sonicwall Sma100 Firmware.

## How do I fix CVE-2021-20018?

No fix has been published for CVE-2021-20018 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-20018 being exploited?

There is no known exploitation of CVE-2021-20018 in the wild and no public exploit code.

## Other vulnerabilities in SonicWall SMA100

- [CVE-2021-20017](https://insights.sbomify.com/CVE-2021-20017/): Command injection in SMA100 (high 8.8)
- [CVE-2020-5132](https://insights.sbomify.com/CVE-2020-5132/): Information disclosure in SMA100 (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-20018 and fix it if it is affected.

What it is: CVE-2021-20018 is a medium-severity vulnerability in SonicWall SMA100, published on 13 Mar 2021. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-20018 in the wild and no public exploit code.

Affected product: SonicWall SMA100. No package-level version data is available, so check the vendor advisory linked from the reference page.

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-2021-20018/ (Markdown: https://insights.sbomify.com/CVE-2021-20018/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-20018
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-20018
- OSV: https://osv.dev/vulnerability/CVE-2021-20018

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-20018/
Summaries are generated and may contain mistakes; the official description above is the record.