# CVE-2008-4771: Memory corruption in n/a

> Remote attackers can execute arbitrary code via a stack-based buffer overflow in vulnerable ActiveX controls when a user visits a malicious page.

- **Severity:** Critical 9.3 (`AV:N/AC:M/Au:N/C:C/I:C/A:C`)
- **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:** 28 Oct 2008
- **Updated:** 7 Aug 2024
- **Also known as:** GHSA-635w-wh5r-q5v6

## What is CVE-2008-4771?

CVE-2008-4771 is a critical memory corruption vulnerability in n/a, published on 28 Oct 2008. 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

Stack-based buffer overflow in VATDecoder.VatCtrl.1 ActiveX control in (1) 4xem VatCtrl Class (VATDecoder.dll 1.0.0.27 and 1.0.0.51), (2) D-Link MPEG4 SHM Audio Control (VAPGDecoder.dll 1.7.0.5), (3) Vivotek RTSP MPEG4 SP Control (RtspVapgDecoderNew.dll 2.0.0.39), and possibly other products, allows remote attackers to execute arbitrary code via a long Url property.  NOTE: some of these details are obtained from third party information.

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

## Which versions are affected by CVE-2008-4771?

It affects 3 products.


Products: 4xem Vatctrl Class, D-Link Mpeg4 Shm Audio Control, Vivotek Rtsp Mpeg4 Sp Control.

## How do I fix CVE-2008-4771?

No fix has been published for CVE-2008-4771 yet. Limit exposure of the affected software until one is available.

## Is CVE-2008-4771 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2008-4771 exists.

Public exploit code:

- D-Link MPEG4 SHM Audio Control - 'VAPGDecoder.dll 1.7.0.5' Remote Buffer Overflow (exploitdb)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2008-4771 and fix it if it is affected.

What it is: CVE-2008-4771 is a critical memory corruption vulnerability in n/a, published on 28 Oct 2008. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2008-4771 exists.

Affected product: n/a. 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-2008-4771/ (Markdown: https://insights.sbomify.com/CVE-2008-4771/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2008-4771
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2008-4771
- OSV: https://osv.dev/vulnerability/CVE-2008-4771

---
From sbomify Insights: https://insights.sbomify.com/CVE-2008-4771/
Summaries are generated and may contain mistakes; the official description above is the record.