# CVE-2021-22340: Race condition in ManageOne;SMC2.0

> A race condition in Huawei ManageOne and SMC allows a root user to crash the system via concurrent I/O operations.

- **Severity:** Medium 4.1 (`CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 29 Jun 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-4wqw-j3vx-3hwj

## What is CVE-2021-22340?

CVE-2021-22340 is a medium-severity vulnerability in ManageOne;SMC2.0, published on 29 Jun 2021. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

There is a multiple threads race condition vulnerability in Huawei product. A race condition exists for concurrent I/O read by multiple threads. An attacker with the root permission can exploit this vulnerability by performing some operations. Successful exploitation of this vulnerability may cause the system to crash. Affected product versions include: ManageOne 6.5.1.SPC200, 8.0.0,8.0.0-LCND81, 8.0.0.SPC100, 8.0.1,8.0.RC2, 8.0.RC3, 8.0.RC3.SPC100;SMC2.0 V600R019C10SPC700,V600R019C10SPC702, V600R019C10SPC703,V600R019C10SPC800, V600R019C10SPC900, V600R019C10SPC910, V600R019C10SPC920, V600R019C10SPC921, V600R019C10SPC922, V600R019C10SPC930, V600R019C10SPC931

Weakness: CWE-362 (Concurrent Execution using Shared Resource with Improper Synchronization)

## Which versions are affected by CVE-2021-22340?

It affects 2 products.


Products: Huawei Manageone, Huawei Smc2.0.

## How do I fix CVE-2021-22340?

No fix has been published for CVE-2021-22340 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-22340 being exploited?

There is no known exploitation of CVE-2021-22340 in the wild and no public exploit code.

## Other vulnerabilities in ManageOne;SMC2.0

- [CVE-2021-22314](https://insights.sbomify.com/CVE-2021-22314/): Privilege escalation in ManageOne (high 7.8)
- [CVE-2019-5289](https://insights.sbomify.com/CVE-2019-5289/): Denial of service in ManageOne (high 7.5)
- [CVE-2021-22311](https://insights.sbomify.com/CVE-2021-22311/): Privilege escalation in ManageOne (high 7.2)
- [CVE-2020-9115](https://insights.sbomify.com/CVE-2020-9115/): Command injection in ManageOne (high 7.2)
- [CVE-2021-22397](https://insights.sbomify.com/CVE-2021-22397/): Privilege escalation in ManageOne (medium 6.7)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-22340 and fix it if it is affected.

What it is: CVE-2021-22340 is a medium-severity vulnerability in ManageOne;SMC2.0, published on 29 Jun 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-22340 in the wild and no public exploit code.

Affected product: ManageOne;SMC2.0. 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-2021-22340/ (Markdown: https://insights.sbomify.com/CVE-2021-22340/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-22340
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-22340
- OSV: https://osv.dev/vulnerability/CVE-2021-22340

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-22340/
Summaries are generated and may contain mistakes; the official description above is the record.