# CVE-2021-40007: Information disclosure in eCNS280 TD

> An attacker with log file access can obtain sensitive information due to improper log output management in the Huawei eCNS280_TD device.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/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:** 13 Dec 2021
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-qwj7-chm6-2f8f

## What is CVE-2021-40007?

CVE-2021-40007 is a medium-severity vulnerability in eCNS280_TD, published on 13 Dec 2021. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

There is an information leak vulnerability in eCNS280_TD V100R005C10SPC650. The vulnerability is caused by improper log output management. An attacker with the ability to access the log file of device may lead to information disclosure.

Weakness: CWE-116 (Improper Encoding or Escaping of Output)

## Which versions are affected by CVE-2021-40007?

It affects 1 product.


Products: Huawei Ecns280 Td Firmware.

## How do I fix CVE-2021-40007?

No fix has been published for CVE-2021-40007 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-40007 being exploited?

There is no known exploitation of CVE-2021-40007 in the wild and no public exploit code.

## Other vulnerabilities in eCNS280_TD

- [CVE-2021-22396](https://insights.sbomify.com/CVE-2021-22396/): Privilege escalation in eCNS280 TD;eSE620X vESS (high 7.8)
- [CVE-2021-22363](https://insights.sbomify.com/CVE-2021-22363/): Denial of service in eCNS280 TD (high 7.5)
- [CVE-2021-39995](https://insights.sbomify.com/CVE-2021-39995/): Denial of service in eCNS280 TD;eSE620X vESS (medium 6.5)
- [CVE-2021-37036](https://insights.sbomify.com/CVE-2021-37036/): Information disclosure in FusionCompute;eCNS280 TD (medium 5.5)
- [CVE-2021-22378](https://insights.sbomify.com/CVE-2021-22378/): Race condition in eCNS280 TD (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-40007 and fix it if it is affected.

What it is: CVE-2021-40007 is a medium-severity vulnerability in eCNS280_TD, published on 13 Dec 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-40007 in the wild and no public exploit code.

Affected product: eCNS280_TD. 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-2021-40007/ (Markdown: https://insights.sbomify.com/CVE-2021-40007/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-40007
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-40007
- OSV: https://osv.dev/vulnerability/CVE-2021-40007

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-40007/
Summaries are generated and may contain mistakes; the official description above is the record.