---
title: "CVE-2019-7443\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2019-7443?format=md
keywords: index, follow
---

# CVE-2019-7443

Publication date 7 May 2019

Last updated 25 August 2025

---

Ubuntu priority

**Medium**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

## Cvss 3 Severity Score

**8.1 · High**

[Score breakdown](https://ubuntu.com/security/CVE-2019-7443?format=md#impact-score)

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## Description

KDE KAuth before 5.55 allows the passing of parameters with arbitrary types
to helpers running as root over DBus via DBusHelperProxy.cpp. Certain types
can cause crashes, and trigger the decoding of arbitrary images with
dynamically loaded plugins. In other words, KAuth unintentionally causes
this plugin code to run as root, which increases the severity of any
possible exploitation of a plugin vulnerability.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| kauth | 23.04 lunar | Not affected |
| 22.10 kinetic | Not affected |
| 22.04 LTS jammy | Not affected |
| 21.10 impish | Ignored end of life |
| 21.04 hirsute | Ignored end of life |
| 20.10 groovy | Ignored end of life |
| 20.04 LTS focal | Not affected |
| 19.10 eoan | Ignored end of life |
| 19.04 disco | Ignored end of life |
| 18.10 cosmic | Ignored end of life |
| 18.04 LTS bionic | Fixed 5.44.0-0ubuntu1+esm1  Ubuntu Pro |
| 16.04 LTS xenial | Fixed 5.18.0-0ubuntu2+esm1  Ubuntu Pro |
| 14.04 LTS trusty | Not in release |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)

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## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

8.1 · High

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Network |
  | Attack complexity | High |
  | Privileges required | None |
  | User interaction | None |
  | Scope | Unchanged |
  | Confidentiality impact | High |
  | Integrity impact | High |
  | Availability impact | High |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 8.1 · High |
  | Exploitability score | - |
  | Impact score | - |

**Vector:** CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-7443)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2019-7443)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2019-7443)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2019-7443)

### Related Ubuntu Security Notices (USN)

+ [USN-6035-1](https://usn.ubuntu.com/USN-6035-1)
+ KAuth vulnerability
+ 20 April 2023

### Other references

* <https://mail.kde.org/pipermail/kde-announce/2019-February/000011.html>
* <https://cgit.kde.org/kauth.git/commit/?id=fc70fb0161c1b9144d26389434d34dd135cd3f4a>
* <https://www.cve.org/CVERecord?id=CVE-2019-7443>