# CVE-2024-12830: Arista NG Firewall custom_handler Directory Traversal Remote Code Execution Vulnerability

> Remote attackers can execute arbitrary code on Arista NG Firewall via directory traversal in custom_handler without authentication.

- **Severity:** High 8.1 (`CVSS:3.0/AV:N/AC:H/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:** 20 Dec 2024
- **Updated:** 20 Dec 2024
- **Also known as:** GHSA-g2qv-6658-vpj8

## What is CVE-2024-12830?

CVE-2024-12830 is a high-severity path traversal vulnerability in Arista NG Firewall, published on 20 Dec 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Arista NG Firewall custom_handler Directory Traversal Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Arista NG Firewall. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the implementation of the custom_handler method. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to execute code in the context of the www-data user. Was ZDI-CAN-24019.

Weakness: CWE-22 (Improper Limitation of a Pathname to a Restricted Directory)

## Which versions are affected by CVE-2024-12830?

It affects 1 product.


Products: Arista Ng Firewall.

## How do I fix CVE-2024-12830?

No fix has been published for CVE-2024-12830 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-12830 being exploited?

There is no known exploitation of CVE-2024-12830 in the wild and no public exploit code.

## Other vulnerabilities in Arista NG Firewall

- [CVE-2025-2767](https://insights.sbomify.com/CVE-2025-2767/): Arista NG Firewall User-Agent Cross-Site Scripting Remote Code Execution Vulnerability (high 8.8)
- [CVE-2024-9188](https://insights.sbomify.com/CVE-2024-9188/): Specially constructed queries cause cross platform scripting leaking administrator tokens (high 8.8)
- [CVE-2024-27889](https://insights.sbomify.com/CVE-2024-27889/): SQL injection in Arista Edge Threat Management - Arista NG Firewall (NGFW) (high 8.8)
- [CVE-2024-47519](https://insights.sbomify.com/CVE-2024-47519/): Backup uploads to ETM subject to man-in-the-middle interception (high 8.3)
- [CVE-2024-9134](https://insights.sbomify.com/CVE-2024-9134/): SQL injection in Arista Edge Threat Management (high 8.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-12830 and fix it if it is affected.

What it is: CVE-2024-12830 is a high-severity path traversal vulnerability in Arista NG Firewall, published on 20 Dec 2024. 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-2024-12830 in the wild and no public exploit code.

Affected product: Arista NG Firewall. 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-2024-12830/ (Markdown: https://insights.sbomify.com/CVE-2024-12830/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-12830
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-12830
- OSV: https://osv.dev/vulnerability/CVE-2024-12830

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-12830/
Summaries are generated and may contain mistakes; the official description above is the record.