# CVE-2023-0426: Stack overflow in filename or in boundary

> An attacker can cause a stack-based buffer overflow in ABB Freelance controllers, leading to a denial of service.

- **Severity:** High 8.6 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/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:** 7 Aug 2023
- **Updated:** 7 Nov 2024
- **Also known as:** GHSA-9qgw-q427-76fm

## What is CVE-2023-0426?

CVE-2023-0426 is a high-severity memory corruption vulnerability in ABB  Freelance controllers AC 700F, published on 7 Aug 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

ABB is aware of vulnerabilities in the product versions listed below. An update is available that resolves
the reported vulnerabilities in the product versions under maintenance.
An attacker who successfully exploited one or more of these vulnerabilities could cause the product to
stop or make the product inaccessible. 

Stack-based Buffer Overflow vulnerability in ABB Freelance controllers AC 700F (conroller modules), ABB Freelance controllers AC 900F (controller modules).This issue affects:

 Freelance controllers AC 700F: 

from 9.0;0 through V9.2 SP2, through Freelance 2013, through Freelance 2013SP1, through Freelance 2016, through Freelance 2016SP1, through Freelance 2019 , through Freelance 2019 SP1, through Freelance 2019 SP1 FP1; 

Freelance controllers AC 900F: 

through Freelance 2013, through Freelance 2013SP1, through Freelance 2016, through Freelance 2016SP1, through Freelance 2019, through Freelance 2019 SP1, through Freelance 2019 SP1 FP1.

Weakness: CWE-121 (Stack-based Buffer Overflow)

## Which versions are affected by CVE-2023-0426?

It affects 4 products.


Products: Abb Ac700f Firmware, Abb Freelance 2013, Abb Freelance 2016, Abb Freelance 2019.

## How do I fix CVE-2023-0426?

No fix has been published for CVE-2023-0426 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-0426 being exploited?

There is no known exploitation of CVE-2023-0426 in the wild and no public exploit code.

## Other vulnerabilities in ABB  Freelance controllers AC 700F

- [CVE-2023-0425](https://insights.sbomify.com/CVE-2023-0425/): Buffer overflow in global memory region (high 8.6)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-0426 and fix it if it is affected.

What it is: CVE-2023-0426 is a high-severity memory corruption vulnerability in ABB  Freelance controllers AC 700F, published on 7 Aug 2023. 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-2023-0426 in the wild and no public exploit code.

Affected product: ABB  Freelance controllers AC 700F. 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-2023-0426/ (Markdown: https://insights.sbomify.com/CVE-2023-0426/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-0426
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-0426
- OSV: https://osv.dev/vulnerability/CVE-2023-0426

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-0426/
Summaries are generated and may contain mistakes; the official description above is the record.