# CVE-2012-0352: Denial of service in n/a

> Remote attackers can crash the netstack process and reload Cisco Nexus switches by sending a malformed IP packet.

- **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:** 16 Feb 2012
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-r3cp-57hj-ff8c

## What is CVE-2012-0352?

CVE-2012-0352 is a high-severity denial of service vulnerability in Cisco Nx-Os, published on 16 Feb 2012. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Cisco NX-OS 4.2.x before 4.2(1)SV1(5.1) on Nexus 1000v series switches; 4.x and 5.0.x before 5.0(2)N1(1) on Nexus 5000 series switches; and 4.2.x before 4.2.8, 5.0.x before 5.0.5, and 5.1.x before 5.1.1 on Nexus 7000 series switches allows remote attackers to cause a denial of service (netstack process crash and device reload) via a malformed IP packet, aka Bug IDs CSCti23447, CSCti49507, and CSCtj01991.

Weakness: CWE-399

## Which versions are affected by CVE-2012-0352?

It affects 12 products.


Products: Cisco Nexus 1000v, Cisco Nexus 5000, Cisco Nexus 5010, Cisco Nexus 5020, Cisco Nexus 5548p, Cisco Nexus 5548up, Cisco Nexus 5596up, Cisco Nexus 7000, Cisco Nexus 7000 10-Slot, Cisco Nexus 7000 18-Slot, Cisco Nexus 7000 9-Slot, Cisco Nx-Os.

## How do I fix CVE-2012-0352?

No fix has been published for CVE-2012-0352 yet. Limit exposure of the affected software until one is available.

## Is CVE-2012-0352 being exploited?

There is no known exploitation of CVE-2012-0352 in the wild and no public exploit code.

## Other vulnerabilities in Cisco Nx-Os

- [CVE-2013-5556](https://insights.sbomify.com/CVE-2013-5556/): Privilege escalation in n/a (medium 6.8)
- [CVE-2013-3400](https://insights.sbomify.com/CVE-2013-3400/): Command injection in n/a (medium 6.8)
- [CVE-2013-1212](https://insights.sbomify.com/CVE-2013-1212/): Security feature bypass in n/a (medium 5.8)
- [CVE-2013-1213](https://insights.sbomify.com/CVE-2013-1213/): Denial of service in n/a (medium 5.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2012-0352 and fix it if it is affected.

What it is: CVE-2012-0352 is a high-severity denial of service vulnerability in Cisco Nx-Os, published on 16 Feb 2012. 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-2012-0352 in the wild and no public exploit code.

Affected product: Cisco Nx-Os. 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-2012-0352/ (Markdown: https://insights.sbomify.com/CVE-2012-0352/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2012-0352
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2012-0352
- OSV: https://osv.dev/vulnerability/CVE-2012-0352

---
From sbomify Insights: https://insights.sbomify.com/CVE-2012-0352/
Summaries are generated and may contain mistakes; the official description above is the record.