# CVE-2004-0479: Null dereference in n/a

> Remote attackers can crash Internet Explorer 6 by using JavaScript to create a popup window with disabled image toolbar functionality.

- **Severity:** Medium 5.0 (`AV:N/AC:L/Au:N/C:N/I:N/A:P`)
- **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:** 20 May 2004
- **Updated:** 8 Aug 2024
- **Also known as:** GHSA-p7j9-6f6w-fhcg

## What is CVE-2004-0479?

CVE-2004-0479 is a medium-severity vulnerability in Microsoft Ie, published on 20 May 2004. 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

Internet Explorer 6 allows remote attackers to cause a denial of service (crash) via Javascript that creates a new popup window and disables the imagetoolbar functionality with a META tag, which triggers a null dereference.

## Which versions are affected by CVE-2004-0479?

It affects 1 product.


Products: Microsoft Ie.

## How do I fix CVE-2004-0479?

No fix has been published for CVE-2004-0479 yet. Limit exposure of the affected software until one is available.

## Is CVE-2004-0479 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2004-0479 exists.

Public exploit code:

- Microsoft Internet Explorer 5.0.1 - http-equiv Meta Tag Denial of Service (exploitdb)

## Other vulnerabilities in Microsoft Ie

- [CVE-2007-0217](https://insights.sbomify.com/CVE-2007-0217/): Memory corruption in n/a (critical 10.0)
- [CVE-2007-0219](https://insights.sbomify.com/CVE-2007-0219/): Code injection in n/a (critical 10.0)
- [CVE-2006-1186](https://insights.sbomify.com/CVE-2006-1186/): Memory corruption in n/a (critical 10.0)
- [CVE-2004-0985](https://insights.sbomify.com/CVE-2004-0985/): Code injection in n/a (critical 10.0)
- [CVE-2004-0216](https://insights.sbomify.com/CVE-2004-0216/): Integer overflow in n/a (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2004-0479 and fix it if it is affected.

What it is: CVE-2004-0479 is a medium-severity vulnerability in Microsoft Ie, published on 20 May 2004. 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-2004-0479 exists.

Affected product: Microsoft Ie. 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-2004-0479/ (Markdown: https://insights.sbomify.com/CVE-2004-0479/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2004-0479
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2004-0479
- OSV: https://osv.dev/vulnerability/CVE-2004-0479

---
From sbomify Insights: https://insights.sbomify.com/CVE-2004-0479/
Summaries are generated and may contain mistakes; the official description above is the record.