# CVE-2024-40723: CHANGING Information Technology HWATAIServiSign Windows Version - Stack-based Buffer Overflow

> Remote attackers can cause a stack-based buffer overflow in HWATAIServiSign via a spoofed website, leading to temporary service disruption.

- **Severity:** Medium 4.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 2 Aug 2024
- **Updated:** 2 Aug 2024
- **Also known as:** GHSA-jjc3-cj6j-hw3v

## What is CVE-2024-40723?

CVE-2024-40723 is a medium-severity memory corruption vulnerability in CHANGING Information Technology HWATAIServiSign Windows Version, published on 2 Aug 2024. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

The specific API in HWATAIServiSign Windows Version from CHANGING Information Technology does not properly validate the length of server-side inputs. When a user visits a spoofed website, unauthenticated remote attackers can cause a stack-based buffer overflow in the HWATAIServiSign, temporarily disrupting its service.

Weakness: CWE-787 (Out-of-bounds Write), CWE-121 (Stack-based Buffer Overflow)

## Which versions are affected by CVE-2024-40723?

It affects 1 product.


Products: Changingtec Hwatai Servisign.

## How do I fix CVE-2024-40723?

No fix has been published for CVE-2024-40723 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-40723 being exploited?

There is no known exploitation of CVE-2024-40723 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-40723 and fix it if it is affected.

What it is: CVE-2024-40723 is a medium-severity memory corruption vulnerability in CHANGING Information Technology HWATAIServiSign Windows Version, published on 2 Aug 2024. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2024-40723 in the wild and no public exploit code.

Affected product: CHANGING Information Technology HWATAIServiSign Windows Version. 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-2024-40723/ (Markdown: https://insights.sbomify.com/CVE-2024-40723/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-40723
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-40723
- OSV: https://osv.dev/vulnerability/CVE-2024-40723

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-40723/
Summaries are generated and may contain mistakes; the official description above is the record.