# CVE-2017-13864: Information disclosure in n/a

> Man-in-the-middle attackers can track users by exploiting mishandled client certificates in the APNs Server component of Apple iCloud and iTunes on Windows.

- **Severity:** Medium 5.9 (`CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 25 Dec 2017
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-qcg7-7rrg-78rf

## What is CVE-2017-13864?

CVE-2017-13864 is a medium-severity vulnerability in Apple Icloud, published on 25 Dec 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

An issue was discovered in certain Apple products. iCloud before 7.2 on Windows is affected. iTunes before 12.7.2 on Windows is affected. The issue involves the "APNs Server" component. It allows man-in-the-middle attackers to track users by leveraging mishandling of client certificates.

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

## Which versions are affected by CVE-2017-13864?

It affects 2 products.


Products: Apple Icloud, Apple Itunes.

## How do I fix CVE-2017-13864?

No fix has been published for CVE-2017-13864 yet. Limit exposure of the affected software until one is available.

## Is CVE-2017-13864 being exploited?

There is no known exploitation of CVE-2017-13864 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-2017-13864 and fix it if it is affected.

What it is: CVE-2017-13864 is a medium-severity vulnerability in Apple Icloud, published on 25 Dec 2017. 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-2017-13864 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-2017-13864/ (Markdown: https://insights.sbomify.com/CVE-2017-13864/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-13864
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-13864
- OSV: https://osv.dev/vulnerability/CVE-2017-13864

---
From sbomify Insights: https://insights.sbomify.com/CVE-2017-13864/
Summaries are generated and may contain mistakes; the official description above is the record.