# CVE-2016-4707: Information disclosure in n/a

> Local attackers can discover visited websites of arbitrary users due to mishandled Local Storage deletion in CFNetwork.

- **Severity:** Medium 4.0 (`CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 25 Sep 2016
- **Updated:** 6 Aug 2024
- **Also known as:** GHSA-2f5p-8xjh-f2m8, UBUNTU-CVE-2016-4707

## What is CVE-2016-4707?

CVE-2016-4707 is a medium-severity vulnerability in Apple Iphone Os, published on 25 Sep 2016. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

CFNetwork in Apple iOS before 10 and OS X before 10.12 mishandles Local Storage deletion, which allows local users to discover the visited web sites of arbitrary users via unspecified vectors.

Weakness: CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor), CWE-19

## Which versions are affected by CVE-2016-4707?

It affects 2 products.


Products: Apple Iphone Os, Apple Mac Os X.

## How do I fix CVE-2016-4707?

Upgrade to a fixed version.

## Is CVE-2016-4707 being exploited?

There is no known exploitation of CVE-2016-4707 in the wild and no public exploit code.

## 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-2016-4707 and fix it if it is affected.

What it is: CVE-2016-4707 is a medium-severity vulnerability in Apple Iphone Os, published on 25 Sep 2016. 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-2016-4707 in the wild and no public exploit code.

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-2016-4707/ (Markdown: https://insights.sbomify.com/CVE-2016-4707/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2016-4707
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2016-4707
- OSV: https://osv.dev/vulnerability/CVE-2016-4707

---
From sbomify Insights: https://insights.sbomify.com/CVE-2016-4707/
Summaries are generated and may contain mistakes; the official description above is the record.