# CVE-2023-41355: Chunghwa Telecom NOKIA G-040W-Q - Improper Input Validation

> An unauthenticated remote attacker can modify the network routing table via crafted ICMP redirect messages, causing denial of service or information disclosure.

- **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:** 3 Nov 2023
- **Updated:** 14 Oct 2024
- **Also known as:** GHSA-5297-2xjq-2cfx

## What is CVE-2023-41355?

CVE-2023-41355 is a critical vulnerability in Chunghwa Telecom NOKIA G-040W-Q, published on 3 Nov 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Chunghwa Telecom NOKIA G-040W-Q Firewall function has a vulnerability of input validation for ICMP redirect messages. An unauthenticated remote attacker can exploit this vulnerability by sending a crafted package to modify the network routing table, resulting in a denial of service or sensitive information leaking.

Weakness: CWE-20 (Improper Input Validation), CWE-940 (Improper Verification of Source of a Communication Channel)

## Which versions are affected by CVE-2023-41355?

It affects 1 product.


Products: Nokia G-040w-Q Firmware.

## How do I fix CVE-2023-41355?

No fix has been published for CVE-2023-41355 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-41355 being exploited?

There is no known exploitation of CVE-2023-41355 in the wild and no public exploit code.

## Other vulnerabilities in Chunghwa Telecom NOKIA G-040W-Q

- [CVE-2023-41351](https://insights.sbomify.com/CVE-2023-41351/): Chunghwa Telecom NOKIA G-040W-Q - Broken Access Control (critical 9.8)
- [CVE-2023-41353](https://insights.sbomify.com/CVE-2023-41353/): Chunghwa Telecom NOKIA G-040W-Q - Weak Password Requirements (high 8.8)
- [CVE-2023-41350](https://insights.sbomify.com/CVE-2023-41350/): Chunghwa Telecom NOKIA G-040W-Q - Excessive Authentication Attempts (high 7.5)
- [CVE-2023-41352](https://insights.sbomify.com/CVE-2023-41352/): Chunghwa Telecom NOKIA G-040W-Q - Command Injection (high 7.2)
- [CVE-2023-41354](https://insights.sbomify.com/CVE-2023-41354/): Chunghwa Telecom NOKIA G-040W-Q - Exposure of Sensitive Information (medium 4.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-41355 and fix it if it is affected.

What it is: CVE-2023-41355 is a critical vulnerability in Chunghwa Telecom NOKIA G-040W-Q, published on 3 Nov 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-2023-41355 in the wild and no public exploit code.

Affected product: Chunghwa Telecom NOKIA G-040W-Q. 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-2023-41355/ (Markdown: https://insights.sbomify.com/CVE-2023-41355/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-41355
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-41355
- OSV: https://osv.dev/vulnerability/CVE-2023-41355

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-41355/
Summaries are generated and may contain mistakes; the official description above is the record.