# CVE-2005-4258: Denial of service in n/a

> Remote attackers can crash Cisco Catalyst Switches by sending malformed IP packets with identical source and destination addresses.

- **Severity:** High 7.8 (`AV:N/AC:L/Au:N/C:N/I:N/A:C`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 15 Dec 2005
- **Updated:** 7 Aug 2024
- **Also known as:** GHSA-pc9g-xxwr-7rq9

## What is CVE-2005-4258?

CVE-2005-4258 is a high-severity denial of service vulnerability in Cisco Ios, published on 15 Dec 2005. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Unspecified Cisco Catalyst Switches allow remote attackers to cause a denial of service (device crash) via an IP packet with the same source and destination IPs and ports, and with the SYN flag set (aka LanD). NOTE: the provenance of this issue is unknown; the details are obtained solely from the BID.

## Which versions are affected by CVE-2005-4258?

It affects 71 products.


Products: Cisco Catalyst, Cisco Catalyst 1200 Series, Cisco Catalyst 1900 Series, Cisco Catalyst 2800 Series, Cisco Catalyst 2820, Cisco Catalyst 2900, Cisco Catalyst 2901, Cisco Catalyst 2902, Cisco Catalyst 2920, Cisco Catalyst 2926, Cisco Catalyst 2926f, Cisco Catalyst 2926gl, Cisco Catalyst 2926gs, Cisco Catalyst 2926t, Cisco Catalyst 2940, Cisco Catalyst 2948, Cisco Catalyst 2948-Ge-Tx, Cisco Catalyst 2948g-L3, Cisco Catalyst 2950, Cisco Catalyst 2950 Lre and 51 more.

## How do I fix CVE-2005-4258?

No fix has been published for CVE-2005-4258 yet. Limit exposure of the affected software until one is available.

## Is CVE-2005-4258 being exploited?

There is no known exploitation of CVE-2005-4258 in the wild and no public exploit code.

## Other vulnerabilities in Cisco Ios

- [CVE-2009-1166](https://insights.sbomify.com/CVE-2009-1166/): Denial of service in n/a (high 7.8)
- [CVE-2005-1942](https://insights.sbomify.com/CVE-2005-1942/): Auth bypass in n/a (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2005-4258 and fix it if it is affected.

What it is: CVE-2005-4258 is a high-severity denial of service vulnerability in Cisco Ios, published on 15 Dec 2005. 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-2005-4258 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-2005-4258/ (Markdown: https://insights.sbomify.com/CVE-2005-4258/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2005-4258
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2005-4258
- OSV: https://osv.dev/vulnerability/CVE-2005-4258

---
From sbomify Insights: https://insights.sbomify.com/CVE-2005-4258/
Summaries are generated and may contain mistakes; the official description above is the record.