# CVE-2023-4171: Chengdu Flash Flood Disaster Monitoring and Warning System FileDownload.ashx path traversal

> Remote attackers can exploit a path traversal vulnerability in the FileDownload.ashx endpoint to read arbitrary files from the server.

- **Severity:** Medium 4.3 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 5 Aug 2023
- **Updated:** 21 Nov 2024
- **Also known as:** GHSA-4wj3-6rq6-hrw7

## What is CVE-2023-4171?

CVE-2023-4171 is a medium-severity path traversal vulnerability in Chengdu Flash Flood Disaster Monitoring and Warning System, published on 5 Aug 2023. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A vulnerability classified as problematic was found in Chengdu Flash Flood Disaster Monitoring and Warning System 2.0. This vulnerability affects unknown code of the file \Service\FileDownload.ashx. The manipulation of the argument Files leads to path traversal: '../filedir'. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. VDB-236206 is the identifier assigned to this vulnerability.

Weakness: CWE-24 (Path Traversal: '../filedir')

## Which versions are affected by CVE-2023-4171?

It affects 1 product.


Products: Cdwanjiang Flash Flood Disaster Monitoring and Warning System.

## How do I fix CVE-2023-4171?

No fix has been published for CVE-2023-4171 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-4171 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-4171 exists.

## Other vulnerabilities in Chengdu Flash Flood Disaster Monitoring and Warning System

- [CVE-2023-3802](https://insights.sbomify.com/CVE-2023-3802/): Chengdu Flash Flood Disaster Monitoring and Warning System Ajaxfileupload.ashx unrestricted upload (medium 5.5)
- [CVE-2023-3804](https://insights.sbomify.com/CVE-2023-3804/): Chengdu Flash Flood Disaster Monitoring and Warning System FileHandler.ashx unrestricted upload (medium 5.5)
- [CVE-2023-3798](https://insights.sbomify.com/CVE-2023-3798/): Chengdu Flash Flood Disaster Monitoring and Warning System upload.aspx unrestricted upload (medium 5.5)
- [CVE-2023-4172](https://insights.sbomify.com/CVE-2023-4172/): Chengdu Flash Flood Disaster Monitoring and Warning System FileHandler.ashx absolute path traversal (medium 4.3)
- [CVE-2023-3803](https://insights.sbomify.com/CVE-2023-3803/): Chengdu Flash Flood Disaster Monitoring and Warning System File Name ImageStationDataService.asmx random values (low 2.6)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-4171 and fix it if it is affected.

What it is: CVE-2023-4171 is a medium-severity path traversal vulnerability in Chengdu Flash Flood Disaster Monitoring and Warning System, published on 5 Aug 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-4171 exists.

Affected product: Chengdu Flash Flood Disaster Monitoring and Warning System. 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-2023-4171/ (Markdown: https://insights.sbomify.com/CVE-2023-4171/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-4171
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-4171
- OSV: https://osv.dev/vulnerability/CVE-2023-4171

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-4171/
Summaries are generated and may contain mistakes; the official description above is the record.