# CVE-2012-1366: Denial of service in n/a

> Remote attackers can cause a device reload on Cisco ASR 1000 routers by sending crafted MLD packets when IPv6 MLD tracking is enabled.

- **Severity:** Medium 6.1 (`AV:A/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:** 23 Apr 2014
- **Updated:** 6 Aug 2024
- **Also known as:** GHSA-722r-v4g4-4887

## What is CVE-2012-1366?

CVE-2012-1366 is a medium-severity denial of service vulnerability in Cisco Ios, published on 23 Apr 2014. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Cisco IOS before 15.1(1)SY on ASR 1000 devices, when Multicast Listener Discovery (MLD) tracking is enabled for IPv6, allows remote attackers to cause a denial of service (device reload) via crafted MLD packets, aka Bug ID CSCtz28544.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2012-1366?

It affects 10 products.


Products: Cisco Asr 1001, Cisco Asr 1002, Cisco Asr 1002-X, Cisco Asr 1002 Fixed Router, Cisco Asr 1004, Cisco Asr 1006, Cisco Asr 1013, Cisco Asr 1023 Router, Cisco Asr 9000 Rsp440 Router, Cisco Ios.

## How do I fix CVE-2012-1366?

No fix has been published for CVE-2012-1366 yet. Limit exposure of the affected software until one is available.

## Is CVE-2012-1366 being exploited?

There is no known exploitation of CVE-2012-1366 in the wild and no public exploit code.

## Other vulnerabilities in Cisco Ios

- [CVE-2013-5543](https://insights.sbomify.com/CVE-2013-5543/): Denial of service in n/a (high 7.8)
- [CVE-2013-5545](https://insights.sbomify.com/CVE-2013-5545/): Denial of service in n/a (high 7.8)
- [CVE-2013-5546](https://insights.sbomify.com/CVE-2013-5546/): Denial of service in n/a (high 7.8)
- [CVE-2013-5547](https://insights.sbomify.com/CVE-2013-5547/): Denial of service in n/a (high 7.8)
- [CVE-2013-1164](https://insights.sbomify.com/CVE-2013-1164/): Denial of service in n/a (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2012-1366 and fix it if it is affected.

What it is: CVE-2012-1366 is a medium-severity denial of service vulnerability in Cisco Ios, published on 23 Apr 2014. 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-2012-1366 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-2012-1366/ (Markdown: https://insights.sbomify.com/CVE-2012-1366/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2012-1366
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2012-1366
- OSV: https://osv.dev/vulnerability/CVE-2012-1366

---
From sbomify Insights: https://insights.sbomify.com/CVE-2012-1366/
Summaries are generated and may contain mistakes; the official description above is the record.