# CVE-2016-4448: Other in n/a

> A format string vulnerability in libxml2 allows attackers to potentially execute code or cause denial of service via crafted input.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/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:** Not needed
- **Fix available:** Yes
- **Published:** 9 Jun 2016
- **Updated:** 6 Aug 2024
- **Also known as:** DEBIAN-CVE-2016-4448, ECHO-d877-384f-35c5, GHSA-wfj9-g4pj-c38g, UBUNTU-CVE-2016-4448

## What is CVE-2016-4448?

CVE-2016-4448 is a critical vulnerability in Apple Icloud, published on 9 Jun 2016. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Format string vulnerability in libxml2 before 2.9.4 allows attackers to have unspecified impact via format string specifiers in unknown vectors.

Weakness: CWE-134 (Use of Externally-Controlled Format String)

## Which versions are affected by CVE-2016-4448?

It affects 19 products.


Products: Apple Icloud, Apple Iphone Os, Apple Itunes, Apple Mac Os X, Apple Tvos, Apple Watchos, Hp Icewall Federation Agent, Mcafee Web Gateway, Oracle Linux, Oracle Vm Server, Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Server, Redhat Enterprise Linux Server Aus, Redhat Enterprise Linux Server Eus, Redhat Enterprise Linux Server Tus, Redhat Enterprise Linux Workstation, Slackware Slackware Linux, Tenable Log Correlation Engine, Xmlsoft Libxml2.

## How do I fix CVE-2016-4448?

Upgrade to a fixed version.

## Is CVE-2016-4448 being exploited?

There is no known exploitation of CVE-2016-4448 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-2016-4448 and fix it if it is affected.

What it is: CVE-2016-4448 is a critical vulnerability in Apple Icloud, published on 9 Jun 2016. 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-2016-4448 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-2016-4448/ (Markdown: https://insights.sbomify.com/CVE-2016-4448/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2016-4448
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2016-4448
- OSV: https://osv.dev/vulnerability/CVE-2016-4448

---
From sbomify Insights: https://insights.sbomify.com/CVE-2016-4448/
Summaries are generated and may contain mistakes; the official description above is the record.