# CVE-2021-20732: Weak cryptography in ATOM

> Attackers can intercept encrypted traffic via man-in-the-middle attacks due to improper server certificate validation in the mobile app.

- **Severity:** Medium 5.9 (`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 9 Jun 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-9jc3-jwwp-h9mw

## What is CVE-2021-20732?

CVE-2021-20732 is a medium-severity vulnerability in ATOM, published on 9 Jun 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The ATOM (ATOM - Smart life App for Android versions prior to 1.8.1 and ATOM - Smart life App for iOS versions prior to 1.8.2) does not verify server certificate properly, which allows man-in-the-middle attackers to eavesdrop on encrypted communication via a crafted certificate.

Weakness: CWE-295 (Improper Certificate Validation)

## Which versions are affected by CVE-2021-20732?

It affects 1 product.


Products: Atomtech Smart Life.

## How do I fix CVE-2021-20732?

No fix has been published for CVE-2021-20732 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-20732 being exploited?

There is no known exploitation of CVE-2021-20732 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-20732 and fix it if it is affected.

What it is: CVE-2021-20732 is a medium-severity vulnerability in ATOM, published on 9 Jun 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-20732 in the wild and no public exploit code.

Affected product: ATOM. 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-2021-20732/ (Markdown: https://insights.sbomify.com/CVE-2021-20732/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-20732
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-20732
- OSV: https://osv.dev/vulnerability/CVE-2021-20732

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-20732/
Summaries are generated and may contain mistakes; the official description above is the record.