# CVE-2021-40643: Command injection in n/a

> Attackers can execute arbitrary commands via the sendmail path configuration in EyesOfNetwork, leading to remote code execution.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 30 Jun 2022
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-x327-f57f-h5w6

## What is CVE-2021-40643?

CVE-2021-40643 is a critical command injection vulnerability in n/a, published on 30 Jun 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

EyesOfNetwork before 07-07-2021 has a Remote Code Execution vulnerability on the mail options configuration page. In the location of the "sendmail" application in the "cacti" configuration page (by default/usr/sbin/sendmail) it is possible to execute any command, which will be executed when we make a test of the configuration ("send test mail").

## Which versions are affected by CVE-2021-40643?

It affects 1 product.


Products: Eyesofnetwork Eyesofnetwork.

## How do I fix CVE-2021-40643?

No fix has been published for CVE-2021-40643 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-40643 being exploited?

There is no known exploitation of CVE-2021-40643 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2020-8657](https://insights.sbomify.com/CVE-2020-8657/): EyesOfNetwork Use of Hard-Coded Credentials (critical 9.8, exploited in the wild)
- [CVE-2020-8655](https://insights.sbomify.com/CVE-2020-8655/): EyesOfNetwork Improper Privilege Management (high 7.8, exploited in the wild)
- [CVE-2022-41572](https://insights.sbomify.com/CVE-2022-41572/): Privilege escalation in n/a (critical 9.8)
- [CVE-2022-41570](https://insights.sbomify.com/CVE-2022-41570/): SQL injection in n/a (critical 9.8)
- [CVE-2022-41571](https://insights.sbomify.com/CVE-2022-41571/): Path traversal in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-40643 and fix it if it is affected.

What it is: CVE-2021-40643 is a critical command injection vulnerability in n/a, published on 30 Jun 2022. 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-2021-40643 in the wild and no public exploit code.

Affected product: n/a. 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-2021-40643/ (Markdown: https://insights.sbomify.com/CVE-2021-40643/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-40643
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-40643
- OSV: https://osv.dev/vulnerability/CVE-2021-40643

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-40643/
Summaries are generated and may contain mistakes; the official description above is the record.