# CVE-2021-37127: Security feature bypass in iManager NetEco;iManager NetEco 6000

> Attackers can bypass firmware signature checks to overwrite system files, potentially leading to code execution or privilege escalation in Huawei iManager NetEco.

- **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:** 27 Oct 2021
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-929h-mg2v-7c23

## What is CVE-2021-37127?

CVE-2021-37127 is a high-severity vulnerability in iManager NetEco;iManager NetEco 6000, published on 27 Oct 2021. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

There is a signature management vulnerability in some huawei products. An attacker can forge signature and bypass the signature check. During firmware update process, successful exploit this vulnerability can cause the forged system file overwrite the correct system file. Affected product versions include:iManager NetEco V600R010C00CP2001,V600R010C00CP2002,V600R010C00SPC100,V600R010C00SPC110,V600R010C00SPC120,V600R010C00SPC200,V600R010C00SPC210,V600R010C00SPC300;iManager NetEco 6000 V600R009C00SPC100,V600R009C00SPC110,V600R009C00SPC120,V600R009C00SPC190,V600R009C00SPC200,V600R009C00SPC201,V600R009C00SPC202,V600R009C00SPC210.

Weakness: CWE-347 (Improper Verification of Cryptographic Signature)

## Which versions are affected by CVE-2021-37127?

It affects 2 products.


Products: Huawei Imanager Neteco 6000 Firmware, Huawei Imanager Neteco Firmware.

## How do I fix CVE-2021-37127?

No fix has been published for CVE-2021-37127 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-37127 being exploited?

There is no known exploitation of CVE-2021-37127 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-37127 and fix it if it is affected.

What it is: CVE-2021-37127 is a high-severity vulnerability in iManager NetEco;iManager NetEco 6000, published on 27 Oct 2021. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-37127 in the wild and no public exploit code.

Affected product: iManager NetEco;iManager NetEco 6000. 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-2021-37127/ (Markdown: https://insights.sbomify.com/CVE-2021-37127/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-37127
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-37127
- OSV: https://osv.dev/vulnerability/CVE-2021-37127

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-37127/
Summaries are generated and may contain mistakes; the official description above is the record.