# CVE-2018-5200: KMPlayer Heap Overflow Vulnerability

> A heap-based buffer overflow in KMPlayer allows remote code execution via a crafted FLV file, requiring users to update the software.

- **Severity:** High 8.0 (`CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 20 Dec 2018
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-6cv9-f688-pm67

## What is CVE-2018-5200?

CVE-2018-5200 is a high-severity memory corruption vulnerability in Pandora.tv KMPlayer, published on 20 Dec 2018. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

KMPlayer 4.2.2.15 and earlier have a Heap Based Buffer Overflow Vulnerability. It could be exploited with a crafted FLV format file. The problem is that more frame data is copied to heap memory than the size specified in the frame header. This results in a memory corruption and remote code execution.

Weakness: CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

## Which versions are affected by CVE-2018-5200?

It affects 1 product.


Products: Pandora Kmplayer.

## How do I fix CVE-2018-5200?

No fix has been published for CVE-2018-5200 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-5200 being exploited?

There is no known exploitation of CVE-2018-5200 in the wild and no public exploit code.

## Other vulnerabilities in Pandora.tv KMPlayer

- [CVE-2024-41200](https://insights.sbomify.com/CVE-2024-41200/): Denial of service in n/a (medium 5.5)
- [CVE-2023-1745](https://insights.sbomify.com/CVE-2023-1745/): KMPlayer SHFOLDER.dll uncontrolled search path (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-5200 and fix it if it is affected.

What it is: CVE-2018-5200 is a high-severity memory corruption vulnerability in Pandora.tv KMPlayer, published on 20 Dec 2018. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2018-5200 in the wild and no public exploit code.

Affected product: Pandora.tv KMPlayer. 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-2018-5200/ (Markdown: https://insights.sbomify.com/CVE-2018-5200/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-5200
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-5200
- OSV: https://osv.dev/vulnerability/CVE-2018-5200

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-5200/
Summaries are generated and may contain mistakes; the official description above is the record.