# CVE-2000-0984: Denial of service in n/a

> Local users can crash and reload the Cisco IOS HTTP server by sending a URL containing a specific string.

- **Severity:** Medium 5.0 (`AV:N/AC:L/Au:N/C:N/I:N/A:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 22 Jan 2001
- **Updated:** 8 Aug 2024
- **Also known as:** GHSA-fgvg-x8xj-8xq8

## What is CVE-2000-0984?

CVE-2000-0984 is a medium-severity denial of service vulnerability in Cisco Ios, published on 22 Jan 2001. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

The HTTP server in Cisco IOS 12.0 through 12.1 allows local users to cause a denial of service (crash and reload) via a URL containing a "?/" string.

## Which versions are affected by CVE-2000-0984?

It affects 1 product.


Products: Cisco Ios.

## How do I fix CVE-2000-0984?

No fix has been published for CVE-2000-0984 yet. Limit exposure of the affected software until one is available.

## Is CVE-2000-0984 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2000-0984 exists.

Public exploit code:

- Cisco IOS 12 - Software '?/' HTTP Request Denial of Service (exploitdb)

## Other vulnerabilities in Cisco Ios

- [CVE-2017-12240](https://insights.sbomify.com/CVE-2017-12240/): Cisco IOS and IOS XE Software DHCP Remote Code Execution (critical 9.8, exploited in the wild)
- [CVE-2017-3881](https://insights.sbomify.com/CVE-2017-3881/): Cisco IOS and IOS XE Remote Code Execution (critical 9.8, exploited in the wild)
- [CVE-2018-0167](https://insights.sbomify.com/CVE-2018-0167/): Cisco IOS, XR, and XE Software Buffer Overflow (high 8.8, exploited in the wild)
- [CVE-2017-6736](https://insights.sbomify.com/CVE-2017-6736/): Cisco IOS and IOS XE Software SNMP Remote Code Execution (high 8.8, exploited in the wild)
- [CVE-2017-6737](https://insights.sbomify.com/CVE-2017-6737/): Cisco IOS and IOS XE Software SNMP Remote Code Execution (high 8.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2000-0984 and fix it if it is affected.

What it is: CVE-2000-0984 is a medium-severity denial of service vulnerability in Cisco Ios, published on 22 Jan 2001. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2000-0984 exists.

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-2000-0984/ (Markdown: https://insights.sbomify.com/CVE-2000-0984/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2000-0984
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2000-0984
- OSV: https://osv.dev/vulnerability/CVE-2000-0984

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From sbomify Insights: https://insights.sbomify.com/CVE-2000-0984/
Summaries are generated and may contain mistakes; the official description above is the record.