# CVE-2012-1357: Denial of service in n/a

> Remote attackers can cause a denial of service on Cisco Nexus switches by sending malicious IGMP packets, requiring network administrators to apply patches.

- **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:** 6 Aug 2012
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-j64f-fqx5-p6mq

## What is CVE-2012-1357?

CVE-2012-1357 is a medium-severity denial of service vulnerability in Cisco Nx-Os, published on 6 Aug 2012. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The igmp_snoop_orib_fill_source_update function in the IGMP process in NX-OS 5.0 and 5.1 on Cisco Nexus 5000 series switches allows remote attackers to cause a denial of service (device reload) via IGMP packets, aka Bug ID CSCts46521.

Weakness: CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

## Which versions are affected by CVE-2012-1357?

It affects 2 products.


Products: Cisco Nexus 5000, Cisco Nx-Os.

## How do I fix CVE-2012-1357?

No fix has been published for CVE-2012-1357 yet. Limit exposure of the affected software until one is available.

## Is CVE-2012-1357 being exploited?

There is no known exploitation of CVE-2012-1357 in the wild and no public exploit code.

## Other vulnerabilities in Cisco Nx-Os

- [CVE-2009-0627](https://insights.sbomify.com/CVE-2009-0627/): Denial of service in n/a (high 7.8)
- [CVE-2014-3341](https://insights.sbomify.com/CVE-2014-3341/): Information disclosure in n/a (medium 5.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2012-1357 and fix it if it is affected.

What it is: CVE-2012-1357 is a medium-severity denial of service vulnerability in Cisco Nx-Os, published on 6 Aug 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-2012-1357 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-2012-1357/ (Markdown: https://insights.sbomify.com/CVE-2012-1357/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2012-1357
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2012-1357
- OSV: https://osv.dev/vulnerability/CVE-2012-1357

---
From sbomify Insights: https://insights.sbomify.com/CVE-2012-1357/
Summaries are generated and may contain mistakes; the official description above is the record.