# CVE-2021-32971: AVEVA SuiteLink Server Null Pointer Dereference

> A null pointer dereference in AVEVA SuiteLink Server allows attackers to cause a denial of service via command 0x07.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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:** 23 Sep 2021
- **Updated:** 17 Sep 2024
- **Also known as:** GHSA-j3qq-rrg5-j2xr

## What is CVE-2021-32971?

CVE-2021-32971 is a high-severity vulnerability in AVEVA Batch Management 2020, published on 23 Sep 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Null pointer dereference in SuiteLink server while processing command 0x07

Weakness: CWE-476 (NULL Pointer Dereference)

## Which versions are affected by CVE-2021-32971?

It affects 1 product.


Products: Aveva Suitelink.

## How do I fix CVE-2021-32971?

No fix has been published for CVE-2021-32971 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-32971 being exploited?

There is no known exploitation of CVE-2021-32971 in the wild and no public exploit code.

## Other vulnerabilities in AVEVA Batch Management 2020

- [CVE-2021-32959](https://insights.sbomify.com/CVE-2021-32959/): AVEVA SuiteLink Server Buffer Overflow (high 8.1)
- [CVE-2021-32963](https://insights.sbomify.com/CVE-2021-32963/): AVEVA SuiteLink Server Null Pointer Dereference (high 7.5)
- [CVE-2021-32979](https://insights.sbomify.com/CVE-2021-32979/): AVEVA SuiteLink Server Null Pointer Dereference (high 7.5)
- [CVE-2021-32987](https://insights.sbomify.com/CVE-2021-32987/): AVEVA SuiteLink Server Null Pointer Dereference (high 7.5)
- [CVE-2021-32999](https://insights.sbomify.com/CVE-2021-32999/): AVEVA SuiteLink Server Improper Handling of Exceptional Conditions (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-32971 and fix it if it is affected.

What it is: CVE-2021-32971 is a high-severity vulnerability in AVEVA Batch Management 2020, published on 23 Sep 2021. 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-2021-32971 in the wild and no public exploit code.

Affected product: AVEVA Batch Management 2020. 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-2021-32971/ (Markdown: https://insights.sbomify.com/CVE-2021-32971/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-32971
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-32971
- OSV: https://osv.dev/vulnerability/CVE-2021-32971

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-32971/
Summaries are generated and may contain mistakes; the official description above is the record.