# CVE-2023-4977: Code Injection in librenms/librenms

> Attackers can execute arbitrary code in LibreNMS, a network monitoring platform, potentially compromising the entire system.

- **Severity:** High 7.3 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 15 Sep 2023
- **Updated:** 20 Sep 2024
- **Also known as:** GHSA-57m2-mpc7-gwgx

## What is CVE-2023-4977?

CVE-2023-4977 is a high-severity code injection vulnerability in Librenms Librenms, published on 15 Sep 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Code Injection in GitHub repository librenms/librenms prior to 23.9.0.

Weakness: CWE-94 (Improper Control of Generation of Code)

## Which versions are affected by CVE-2023-4977?

2 open source packages ship an affected version, including librenms/librenms. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `librenms/librenms` | Packagist | All versions | 23.9.0 |
| `librenms/librenms` | Packagist | All versions | 23.9.0 |

Products: Librenms Librenms.

## How do I fix CVE-2023-4977?

Upgrade librenms/librenms to 23.9.0 or later.

## Is CVE-2023-4977 being exploited?

There is no known exploitation of CVE-2023-4977 in the wild and no public exploit code.

## Other vulnerabilities in Librenms Librenms

- [CVE-2023-4982](https://insights.sbomify.com/CVE-2023-4982/): Cross-site Scripting (XSS) - Stored in librenms/librenms (critical 9.8)
- [CVE-2022-29712](https://insights.sbomify.com/CVE-2022-29712/): Command injection in librenms (critical 9.8)
- [CVE-2021-44278](https://insights.sbomify.com/CVE-2021-44278/): Path traversal in librenms/librenms (critical 9.8)
- [CVE-2019-10665](https://insights.sbomify.com/CVE-2019-10665/): LibreNMS Information Disclosure (critical 9.8)
- [CVE-2018-20434](https://insights.sbomify.com/CVE-2018-20434/): LibreNMS arbitrary OS commands execution (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-4977 and fix it if it is affected.

What it is: CVE-2023-4977 is a high-severity code injection vulnerability in Librenms Librenms, published on 15 Sep 2023. 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-2023-4977 in the wild and no public exploit code.

Affected packages and fixed versions:
- librenms/librenms (Packagist): affected all versions; fixed in 23.9.0
- librenms/librenms (Packagist): affected all versions; fixed in 23.9.0

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-2023-4977/ (Markdown: https://insights.sbomify.com/CVE-2023-4977/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-4977
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-4977
- OSV: https://osv.dev/vulnerability/CVE-2023-4977

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-4977/
Summaries are generated and may contain mistakes; the official description above is the record.