# CVE-2018-16217: Command injection in n/a

> Remote authenticated attackers can execute arbitrary OS commands or open reverse shells via command injection in the network diagnostic function.

- **Severity:** High 8.8 (`CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 29 May 2019
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-fq45-h78c-mjvh

## What is CVE-2018-16217?

CVE-2018-16217 is a high-severity command injection vulnerability in n/a, published on 29 May 2019. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

The network diagnostic function (ping) in the Yeahlink Ultra-elegant IP Phone SIP-T41P (firmware 66.83.0.35) allows a remote authenticated attacker to trigger OS commands or open a reverse shell via command injection.

Weakness: CWE-78 (Improper Neutralization of Special Elements used in an OS Command)

## Which versions are affected by CVE-2018-16217?

It affects 1 product.


Products: Yealink Ultra-Elegant Ip Phone Sip-T41p Firmware.

## How do I fix CVE-2018-16217?

No fix has been published for CVE-2018-16217 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-16217 being exploited?

There is no known exploitation of CVE-2018-16217 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2018-16218](https://insights.sbomify.com/CVE-2018-16218/): Cross-site request forgery in n/a (high 8.8)
- [CVE-2018-16221](https://insights.sbomify.com/CVE-2018-16221/): Path traversal in n/a (high 8.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-16217 and fix it if it is affected.

What it is: CVE-2018-16217 is a high-severity command injection vulnerability in n/a, published on 29 May 2019. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2018-16217 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-2018-16217/ (Markdown: https://insights.sbomify.com/CVE-2018-16217/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-16217
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-16217
- OSV: https://osv.dev/vulnerability/CVE-2018-16217

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-16217/
Summaries are generated and may contain mistakes; the official description above is the record.