# CVE-2004-1111: Denial of service in n/a

> Remote attackers can cause denial of service by flooding undeliverable DHCP packets, affecting Cisco IOS devices without the 'no service dhcp' command.

- **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 Dec 2004
- **Updated:** 8 Aug 2024
- **Also known as:** GHSA-3rrq-mwrq-44vc

## What is CVE-2004-1111?

CVE-2004-1111 is a medium-severity denial of service vulnerability in Cisco Ios, published on 1 Dec 2004. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Cisco IOS 2.2(18)EW, 12.2(18)EWA, 12.2(14)SZ, 12.2(18)S, 12.2(18)SE, 12.2(18)SV, 12.2(18)SW, and other versions without the "no service dhcp" command, keep undeliverable DHCP packets in the queue instead of dropping them, which allows remote attackers to cause a denial of service (dropped traffic) via multiple undeliverable DHCP packets that exceed the input queue size.

## Which versions are affected by CVE-2004-1111?

It affects 10 products.


Products: Cisco 7200 Router, Cisco 7300 Router, Cisco 7500 Router, Cisco 7600 Router, Cisco Catalyst 7600, Cisco Ios, Cisco Multiservice Platform 2650, Cisco Multiservice Platform 2650xm, Cisco Multiservice Platform 2651, Cisco Multiservice Platform 2651xm.

## How do I fix CVE-2004-1111?

No fix has been published for CVE-2004-1111 yet. Limit exposure of the affected software until one is available.

## Is CVE-2004-1111 being exploited?

There is no known exploitation of CVE-2004-1111 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2004-1111 and fix it if it is affected.

What it is: CVE-2004-1111 is a medium-severity denial of service vulnerability in Cisco Ios, published on 1 Dec 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-2004-1111 in the wild and no public exploit code.

Affected product: Cisco Ios. 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-2004-1111/ (Markdown: https://insights.sbomify.com/CVE-2004-1111/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2004-1111
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2004-1111
- OSV: https://osv.dev/vulnerability/CVE-2004-1111

---
From sbomify Insights: https://insights.sbomify.com/CVE-2004-1111/
Summaries are generated and may contain mistakes; the official description above is the record.