# CVE-2020-35131: Code injection in n/a

> Attackers can inject custom PHP code to achieve remote command execution via the registerCriteriaFunction in Cockpit CMS.

- **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:** 8 Jan 2021
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-5qjq-mx2m-jmx9

## What is CVE-2020-35131?

CVE-2020-35131 is a critical code injection vulnerability in n/a, published on 8 Jan 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Cockpit before 0.6.1 allows an attacker to inject custom PHP code and achieve Remote Command Execution via registerCriteriaFunction in lib/MongoLite/Database.php, as demonstrated by values in JSON data to the /auth/check or /auth/requestreset URI.

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

## Which versions are affected by CVE-2020-35131?

It affects 1 product.


Products: Agentejo Cockpit.

## How do I fix CVE-2020-35131?

No fix has been published for CVE-2020-35131 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-35131 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-35131 exists.

Public exploit code:

- Cockpit CMS 0.6.1 - Remote Code Execution (nuclei): http/cves/2020/CVE-2020-35131.yaml

## Other vulnerabilities in n/a

- [CVE-2023-4195](https://insights.sbomify.com/CVE-2023-4195/): PHP Remote File Inclusion in cockpit-hq/cockpit (critical 9.9)
- [CVE-2024-4825](https://insights.sbomify.com/CVE-2024-4825/): Unrestricted Upload of File with Dangerous Type vulnerability on Cockpit CMS from Agentejo (critical 9.8)
- [CVE-2022-2818](https://insights.sbomify.com/CVE-2022-2818/): Improper Removal of Sensitive Information Before Storage or Transfer in cockpit-hq/cockpit (critical 9.8)
- [CVE-2020-35846](https://insights.sbomify.com/CVE-2020-35846/): SQL injection in n/a (critical 9.8)
- [CVE-2020-35847](https://insights.sbomify.com/CVE-2020-35847/): SQL injection in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-35131 and fix it if it is affected.

What it is: CVE-2020-35131 is a critical code injection vulnerability in n/a, published on 8 Jan 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-35131 exists.

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-2020-35131/ (Markdown: https://insights.sbomify.com/CVE-2020-35131/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-35131
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-35131
- OSV: https://osv.dev/vulnerability/CVE-2020-35131

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-35131/
Summaries are generated and may contain mistakes; the official description above is the record.