# CVE-2020-5760: Command injection in Grandstream HT800 Series

> Unauthenticated attackers can execute arbitrary root commands on Grandstream HT800 devices via crafted SIP messages and configuration files.

- **Severity:** High 7.8 (`CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 29 Jul 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-cfmm-v9fq-4h4j

## What is CVE-2020-5760?

CVE-2020-5760 is a high-severity command injection vulnerability in Grandstream HT800 Series, published on 29 Jul 2020. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

Grandstream HT800 series firmware version 1.0.17.5 and below is vulnerable to an OS command injection vulnerability. Unauthenticated remote attackers can execute arbitrary commands as root by crafting a special configuration file and sending a crafted SIP message.

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

## Which versions are affected by CVE-2020-5760?

It affects 6 products.


Products: Grandstream Ht801 Firmware, Grandstream Ht802 Firmware, Grandstream Ht812 Firmware, Grandstream Ht813 Firmware, Grandstream Ht814 Firmware, Grandstream Ht818 Firmware.

## How do I fix CVE-2020-5760?

No fix has been published for CVE-2020-5760 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-5760 being exploited?

There is no known exploitation of CVE-2020-5760 in the wild and no public exploit code.

## Other vulnerabilities in Grandstream HT800 Series

- [CVE-2021-37748](https://insights.sbomify.com/CVE-2021-37748/): Memory corruption in n/a (high 8.8)
- [CVE-2021-37915](https://insights.sbomify.com/CVE-2021-37915/): Command injection in n/a (high 8.8)
- [CVE-2020-5763](https://insights.sbomify.com/CVE-2020-5763/): Hardcoded credentials in Grandstream HT800 Series (high 8.8)
- [CVE-2020-5761](https://insights.sbomify.com/CVE-2020-5761/): Denial of service in Grandstream HT800 Series (high 7.5)
- [CVE-2020-5762](https://insights.sbomify.com/CVE-2020-5762/): Null dereference in Grandstream HT800 Series (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-5760 and fix it if it is affected.

What it is: CVE-2020-5760 is a high-severity command injection vulnerability in Grandstream HT800 Series, published on 29 Jul 2020. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2020-5760 in the wild and no public exploit code.

Affected product: Grandstream HT800 Series. 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-2020-5760/ (Markdown: https://insights.sbomify.com/CVE-2020-5760/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-5760
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-5760
- OSV: https://osv.dev/vulnerability/CVE-2020-5760

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-5760/
Summaries are generated and may contain mistakes; the official description above is the record.