# CVE-2012-5366: Denial of service in n/a

> Remote attackers can crash macOS systems by flooding the IPv6 stack with crafted ICMPv6 Router Advertisement packets.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 20 Feb 2020
- **Updated:** 6 Aug 2024
- **Also known as:** GHSA-q5hw-29mh-hqq5

## What is CVE-2012-5366?

CVE-2012-5366 is a high-severity denial of service vulnerability in Apple Mac Os X, published on 20 Feb 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The IPv6 implementation in Apple Mac OS X (unknown versions, year 2012 and earlier) allows remote attackers to cause a denial of service via a flood of ICMPv6 Router Advertisement packets containing multiple Routing entries.

Weakness: CWE-400 (Uncontrolled Resource Consumption)

## Which versions are affected by CVE-2012-5366?

It affects 1 product.


Products: Apple Mac Os X.

## How do I fix CVE-2012-5366?

No fix has been published for CVE-2012-5366 yet. Limit exposure of the affected software until one is available.

## Is CVE-2012-5366 being exploited?

There is no known exploitation of CVE-2012-5366 in the wild and no public exploit code.

## Other vulnerabilities in Apple Mac Os X

- [CVE-2014-7169](https://insights.sbomify.com/CVE-2014-7169/): GNU Bourne-Again Shell (Bash) Arbitrary Code Execution (critical 9.8, exploited in the wild)
- [CVE-2014-6271](https://insights.sbomify.com/CVE-2014-6271/): GNU Bourne-Again Shell (Bash) Arbitrary Code Execution (critical 9.8, exploited in the wild)
- [CVE-2012-1823](https://insights.sbomify.com/CVE-2012-1823/): PHP-CGI Query String Parameter (critical 9.8, exploited in the wild)
- [CVE-2021-30713](https://insights.sbomify.com/CVE-2021-30713/): Apple macOS Unspecified (high 7.8, exploited in the wild)
- [CVE-2019-8526](https://insights.sbomify.com/CVE-2019-8526/): Apple macOS Use-After-Free (high 7.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2012-5366 and fix it if it is affected.

What it is: CVE-2012-5366 is a high-severity denial of service vulnerability in Apple Mac Os X, published on 20 Feb 2020. 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-2012-5366 in the wild and no public exploit code.

Affected product: Apple Mac Os X. 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-2012-5366/ (Markdown: https://insights.sbomify.com/CVE-2012-5366/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2012-5366
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2012-5366
- OSV: https://osv.dev/vulnerability/CVE-2012-5366

---
From sbomify Insights: https://insights.sbomify.com/CVE-2012-5366/
Summaries are generated and may contain mistakes; the official description above is the record.