# CVE-2017-7091: Memory corruption in n/a

> Remote attackers can execute arbitrary code or cause denial of service via crafted websites due to memory corruption in WebKit.

- **Severity:** High 8.8 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 23 Oct 2017
- **Updated:** 5 Aug 2024
- **Also known as:** DEBIAN-CVE-2017-7091, GHSA-5pxg-j6rj-gw7c, UBUNTU-CVE-2017-7091

## What is CVE-2017-7091?

CVE-2017-7091 is a high-severity memory corruption vulnerability in Apple Icloud, published on 23 Oct 2017. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

An issue was discovered in certain Apple products. iOS before 11 is affected. Safari before 11 is affected. iCloud before 7.0 on Windows is affected. iTunes before 12.7 on Windows is affected. tvOS before 11 is affected. The issue involves the "WebKit" component. It allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted web site.

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

## Which versions are affected by CVE-2017-7091?

It affects 5 products.


Products: Apple Icloud, Apple Iphone Os, Apple Itunes, Apple Safari, Apple Tvos.

## How do I fix CVE-2017-7091?

Upgrade to a fixed version.

## Is CVE-2017-7091 being exploited?

There is no known exploitation of CVE-2017-7091 in the wild and no public exploit code.

## Other vulnerabilities in Apple Icloud

- [CVE-2019-8506](https://insights.sbomify.com/CVE-2019-8506/): Apple Multiple Products Type Confusion (high 8.8, exploited in the wild)
- [CVE-2020-27932](https://insights.sbomify.com/CVE-2020-27932/): Apple Multiple Products Type Confusion (high 7.8, exploited in the wild)
- [CVE-2019-8746](https://insights.sbomify.com/CVE-2019-8746/): Memory corruption in iOS (critical 9.8)
- [CVE-2019-8749](https://insights.sbomify.com/CVE-2019-8749/): Memory corruption in iOS (critical 9.8)
- [CVE-2019-8756](https://insights.sbomify.com/CVE-2019-8756/): Memory corruption in iOS (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-7091 and fix it if it is affected.

What it is: CVE-2017-7091 is a high-severity memory corruption vulnerability in Apple Icloud, published on 23 Oct 2017. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2017-7091 in the wild and no public exploit code.

Affected product: Apple Icloud. 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-2017-7091/ (Markdown: https://insights.sbomify.com/CVE-2017-7091/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-7091
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-7091
- OSV: https://osv.dev/vulnerability/CVE-2017-7091

---
From sbomify Insights: https://insights.sbomify.com/CVE-2017-7091/
Summaries are generated and may contain mistakes; the official description above is the record.