# CVE-2024-3209: UPX bele.h get_ne64 heap-based overflow

> A heap-based buffer overflow in UPX allows attackers to execute arbitrary code or cause denial of service via crafted files.

- **Severity:** Medium 5.5 (`CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 2 Apr 2024
- **Updated:** 13 Feb 2025
- **Also known as:** DEBIAN-CVE-2024-3209, GHSA-97xg-px2h-jvxp, MGASA-2024-0134, UBUNTU-CVE-2024-3209

## What is CVE-2024-3209?

CVE-2024-3209 is a medium-severity memory corruption vulnerability in Fedoraproject Fedora, published on 2 Apr 2024. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A vulnerability was found in UPX up to 4.2.2. It has been rated as critical. This issue affects the function get_ne64 of the file bele.h. The manipulation leads to heap-based buffer overflow. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-259055. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-122 (Heap-based Buffer Overflow)

## Which versions are affected by CVE-2024-3209?

It affects 2 products.


Products: Fedoraproject Fedora, Upx Upx.

## How do I fix CVE-2024-3209?

No fix published yet.

## Is CVE-2024-3209 being exploited?

There is no known exploitation of CVE-2024-3209 in the wild and no public exploit code.

## Other vulnerabilities in Fedoraproject Fedora

- [CVE-2024-4577](https://insights.sbomify.com/CVE-2024-4577/): PHP-CGI OS Command Injection (critical 9.8, exploited in the wild)
- [CVE-2021-39226](https://insights.sbomify.com/CVE-2021-39226/): Grafana Authentication Bypass (critical 9.8, exploited in the wild)
- [CVE-2019-5544](https://insights.sbomify.com/CVE-2019-5544/): VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow (critical 9.8, exploited in the wild)
- [CVE-2024-4947](https://insights.sbomify.com/CVE-2024-4947/): Google Chromium V8 Type Confusion (critical 9.6, exploited in the wild)
- [CVE-2024-4671](https://insights.sbomify.com/CVE-2024-4671/): Google Chromium Visuals Use-After-Free (critical 9.6, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-3209 and fix it if it is affected.

What it is: CVE-2024-3209 is a medium-severity memory corruption vulnerability in Fedoraproject Fedora, published on 2 Apr 2024. 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-2024-3209 in the wild and no public exploit code.

Affected product: Fedoraproject Fedora. 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-2024-3209/ (Markdown: https://insights.sbomify.com/CVE-2024-3209/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-3209
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-3209
- OSV: https://osv.dev/vulnerability/CVE-2024-3209

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-3209/
Summaries are generated and may contain mistakes; the official description above is the record.