# CVE-2016-7603: Null dereference in n/a

> Local attackers can cause a denial of service in macOS via a NULL pointer dereference in the CoreStorage component.

- **Severity:** Medium 5.5 (`CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 20 Feb 2017
- **Updated:** 6 Aug 2024
- **Also known as:** GHSA-hh7m-36v5-42f5

## What is CVE-2016-7603?

CVE-2016-7603 is a medium-severity vulnerability in Apple Mac Os X, published on 20 Feb 2017. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

An issue was discovered in certain Apple products. macOS before 10.12.2 is affected. The issue involves the "CoreStorage" component. It allows local users to cause a denial of service (NULL pointer dereference) via unspecified vectors.

Weakness: CWE-476 (NULL Pointer Dereference)

## Which versions are affected by CVE-2016-7603?

It affects 1 product.


Products: Apple Mac Os X.

## How do I fix CVE-2016-7603?

No fix has been published for CVE-2016-7603 yet. Limit exposure of the affected software until one is available.

## Is CVE-2016-7603 being exploited?

There is no known exploitation of CVE-2016-7603 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-2016-7603 and fix it if it is affected.

What it is: CVE-2016-7603 is a medium-severity vulnerability in Apple Mac Os X, published on 20 Feb 2017. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2016-7603 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-2016-7603/ (Markdown: https://insights.sbomify.com/CVE-2016-7603/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2016-7603
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2016-7603
- OSV: https://osv.dev/vulnerability/CVE-2016-7603

---
From sbomify Insights: https://insights.sbomify.com/CVE-2016-7603/
Summaries are generated and may contain mistakes; the official description above is the record.