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Vulnerability record · CVE-2019-7443 · published 7 May 2019

CVE-2019-7443: Kde kauth improper input validation vulnerability

Kde · Kauth

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.

8.1 CVSS 3.0 High EPSS 2.4% · top 17.0% CWE-20 · Improper input validation
8.1CVSS 3.0 base score, v2 9.3
2.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
4Affected product versions listed by NVD
12References
17 Jun 2026Last modified by NVD

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.

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

Affected products

4 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lists.opensuse.org/opensuse-security-announce/2019-02/msg00060.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-02/msg00065.html Mailing ListThird Party Advisory
https://bugzilla.suse.com/show_bug.cgi?id=1124863 Issue TrackingPatchThird Party Advisory
https://cgit.kde.org/kauth.git/commit/?id=fc70fb0161c1b9144d26389434d34dd135cd3f4a PatchVendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DAWLQKTUQJOAPXOFWJQAQCA
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PXVUJNXB6QKGPT6YJPJSG3U
http://lists.opensuse.org/opensuse-security-announce/2019-02/msg00060.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-02/msg00065.html Mailing ListThird Party Advisory
https://bugzilla.suse.com/show_bug.cgi?id=1124863 Issue TrackingPatchThird Party Advisory
https://cgit.kde.org/kauth.git/commit/?id=fc70fb0161c1b9144d26389434d34dd135cd3f4a PatchVendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DAWLQKTUQJOAPXOFWJQAQCA
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PXVUJNXB6QKGPT6YJPJSG3U

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Source: NIST National Vulnerability Database (record CVE-2019-7443), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.