# CVE-2020-8958: Command injection in n/a

> Remote attackers can execute arbitrary OS commands on Guangzhou ONU devices via shell metacharacters in the ping destination field.

- **Severity:** High 7.2 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 15 Jul 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-pgrg-v7x5-jj2w

## What is CVE-2020-8958?

CVE-2020-8958 is a high-severity command injection vulnerability in n/a, published on 15 Jul 2020. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

Guangzhou 1GE ONU V2801RW 1.9.1-181203 through 2.9.0-181024 and V2804RGW 1.9.1-181203 through 2.9.0-181024 devices allow remote attackers to execute arbitrary OS commands via shell metacharacters in the boaform/admin/formPing Dest IP Address field.

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

## Which versions are affected by CVE-2020-8958?

It affects 2 products.


Products: Gpononu 1ge\+3fe\+wifi Onu V2804rgw Firmware, Gpononu 1ge Router Wifi Onu V2801rw Firmware.

## How do I fix CVE-2020-8958?

No fix has been published for CVE-2020-8958 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-8958 being exploited?

There is no known exploitation of CVE-2020-8958 in the wild and no public exploit code.

Public exploit code:

- Proof of concept for arbitrary OS command execution on Guangzhou/V-SOL 1GE ONU devices (CVE-2020-8958) (github_poc): https://github.com/qurbat/CVE-2020-8958
- CVE-2020-8958: Authenticated RCE exploit for NetLink HG323 (github_poc): https://github.com/Asjidkalam/CVE-2020-8958

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-8958 and fix it if it is affected.

What it is: CVE-2020-8958 is a high-severity command injection vulnerability in n/a, published on 15 Jul 2020. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2020-8958 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-2020-8958/ (Markdown: https://insights.sbomify.com/CVE-2020-8958/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-8958
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-8958
- OSV: https://osv.dev/vulnerability/CVE-2020-8958

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From sbomify Insights: https://insights.sbomify.com/CVE-2020-8958/
Summaries are generated and may contain mistakes; the official description above is the record.