# CVE-2016-7637: Memory corruption in n/a

> Local attackers can exploit kernel memory corruption to gain privileges or cause denial of service on Apple operating systems.

- **Severity:** High 7.8 (`CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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-mv89-3g3x-39qf

## What is CVE-2016-7637?

CVE-2016-7637 is a high-severity memory corruption vulnerability in Apple Iphone Os, 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. iOS before 10.2 is affected. macOS before 10.12.2 is affected. watchOS before 3.1.3 is affected. The issue involves the "Kernel" component. It allows local users to gain privileges or cause a denial of service (memory corruption) via unspecified vectors.

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

## Which versions are affected by CVE-2016-7637?

It affects 3 products.


Products: Apple Iphone Os, Apple Mac Os X, Apple Watchos.

## How do I fix CVE-2016-7637?

No fix has been published for CVE-2016-7637 yet. Limit exposure of the affected software until one is available.

## Is CVE-2016-7637 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2016-7637 exists.

Public exploit code:

- Apple macOS 10.12 16A323 XNU Kernel / iOS 10.1.1 - 'set_dp_control_port' Lack of Locking Use-After-Free (exploitdb)
- Apple macOS < 10.12.2 / iOS < 10.2 - Broken Kernel Mach Port Name uref Handling Privileged Port Name Replacement Privilege Escalation (exploitdb)

## Other vulnerabilities in Apple Iphone Os

- [CVE-2021-30666](https://insights.sbomify.com/CVE-2021-30666/): Apple iOS WebKit Buffer Overflow (high 8.8, exploited in the wild)
- [CVE-2021-30761](https://insights.sbomify.com/CVE-2021-30761/): Apple iOS WebKit Memory Corruption (high 8.8, exploited in the wild)
- [CVE-2021-30762](https://insights.sbomify.com/CVE-2021-30762/): Apple iOS WebKit Use-After-Free (high 8.8, exploited in the wild)
- [CVE-2016-4657](https://insights.sbomify.com/CVE-2016-4657/): Apple iOS Webkit Memory Corruption (high 8.8, exploited in the wild)
- [CVE-2019-7286](https://insights.sbomify.com/CVE-2019-7286/): Apple Multiple Products Memory Corruption (high 7.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2016-7637 and fix it if it is affected.

What it is: CVE-2016-7637 is a high-severity memory corruption vulnerability in Apple Iphone Os, published on 20 Feb 2017. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2016-7637 exists.

Affected product: Apple Iphone 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-2016-7637/ (Markdown: https://insights.sbomify.com/CVE-2016-7637/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2016-7637
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2016-7637
- OSV: https://osv.dev/vulnerability/CVE-2016-7637

---
From sbomify Insights: https://insights.sbomify.com/CVE-2016-7637/
Summaries are generated and may contain mistakes; the official description above is the record.