# CVE-2005-4794: Denial of service in n/a

> Remote attackers can crash Cisco IP phones and related devices by sending a malformed compressed DNS packet, causing service disruption.

- **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:** 2 May 2006
- **Updated:** 8 Aug 2024
- **Also known as:** GHSA-9jjv-5r68-g5hv

## What is CVE-2005-4794?

CVE-2005-4794 is a medium-severity denial of service vulnerability in n/a, published on 2 May 2006. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Cisco IP Phones 7902/7905/7912, ATA 186/188, Unity Express, ACNS, and Subscriber Edge Services Manager (SESM) allows remote attackers to cause a denial of service (crash or instability) via a compressed DNS packet with a label length byte with an incorrect offset.

## Which versions are affected by CVE-2005-4794?

It affects 7 products.


Products: Cisco Application and Content Networking Software, Cisco Ata, Cisco Ip Phone 7902, Cisco Ip Phone 7905, Cisco Ip Phone 7912, Cisco Subscriber Edge Services Manager, Cisco Unity Express.

## How do I fix CVE-2005-4794?

No fix has been published for CVE-2005-4794 yet. Limit exposure of the affected software until one is available.

## Is CVE-2005-4794 being exploited?

There is no known exploitation of CVE-2005-4794 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2005-0601](https://insights.sbomify.com/CVE-2005-0601/): Hardcoded credentials in n/a (high 7.5)
- [CVE-2003-0982](https://insights.sbomify.com/CVE-2003-0982/): Memory corruption in n/a (high 7.5)
- [CVE-2005-0597](https://insights.sbomify.com/CVE-2005-0597/): Denial of service in n/a (medium 5.0)
- [CVE-2005-0598](https://insights.sbomify.com/CVE-2005-0598/): Denial of service in n/a (medium 5.0)
- [CVE-2005-0599](https://insights.sbomify.com/CVE-2005-0599/): Denial of service in n/a (medium 5.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2005-4794 and fix it if it is affected.

What it is: CVE-2005-4794 is a medium-severity denial of service vulnerability in n/a, published on 2 May 2006. 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-2005-4794 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-2005-4794/ (Markdown: https://insights.sbomify.com/CVE-2005-4794/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2005-4794
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2005-4794
- OSV: https://osv.dev/vulnerability/CVE-2005-4794

---
From sbomify Insights: https://insights.sbomify.com/CVE-2005-4794/
Summaries are generated and may contain mistakes; the official description above is the record.