# CVE-2004-0307: Denial of service in n/a

> Remote attackers can cause a denial of service by sending invalid TCP responses, affecting Cisco ONS optical network devices.

- **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:** Not needed
- **Fix available:** No
- **Published:** 1 Sep 2004
- **Updated:** 8 Aug 2024
- **Also known as:** GHSA-793j-ggmw-r33w

## What is CVE-2004-0307?

CVE-2004-0307 is a medium-severity denial of service vulnerability in n/a, published on 1 Sep 2004. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Cisco ONS 15327 before 4.1(3), ONS 15454 before 4.6(1), and ONS 15454 SD before 4.1(3) allows remote attackers to cause a denial of service (reset) by not sending the ACK portion of the TCP three-way handshake and sending an invalid response instead.

## Which versions are affected by CVE-2004-0307?

It affects 1 product.


Products: Cisco Optical Networking Systems Software.

## How do I fix CVE-2004-0307?

No fix has been published for CVE-2004-0307 yet. Limit exposure of the affected software until one is available.

## Is CVE-2004-0307 being exploited?

There is no known exploitation of CVE-2004-0307 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2004-0308](https://insights.sbomify.com/CVE-2004-0308/): Auth bypass in n/a (critical 10.0)
- [CVE-2002-1558](https://insights.sbomify.com/CVE-2002-1558/): Hardcoded credentials in n/a (critical 10.0)
- [CVE-2004-1436](https://insights.sbomify.com/CVE-2004-1436/): Auth bypass in n/a (high 7.5)
- [CVE-2002-1553](https://insights.sbomify.com/CVE-2002-1553/): Auth bypass in n/a (high 7.5)
- [CVE-2004-1432](https://insights.sbomify.com/CVE-2004-1432/): Denial of service in n/a (medium 5.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2004-0307 and fix it if it is affected.

What it is: CVE-2004-0307 is a medium-severity denial of service vulnerability in n/a, published on 1 Sep 2004. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2004-0307 in the wild and no public exploit code.

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-2004-0307/ (Markdown: https://insights.sbomify.com/CVE-2004-0307/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2004-0307
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2004-0307
- OSV: https://osv.dev/vulnerability/CVE-2004-0307

---
From sbomify Insights: https://insights.sbomify.com/CVE-2004-0307/
Summaries are generated and may contain mistakes; the official description above is the record.