Input validation error in kauth - CVE-2019-7443

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Main Vulnerability Database Vulnerabilities #VU17877

Input validation error in kauth - CVE-2019-7443

Published: February 27, 2019


Vulnerability identifier: #VU17877
CSH Severity: Low
CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2019-7443
CWE-ID: CWE-20
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input passed parameters with arbitrary types to helpers running as root over DBus. A local user can perform denial of service attack or elevate privileges on the system.


Affected software

kauth
Fedora
SUSE Linux
Opensuse
Ubuntu
libkf5auth-data (Ubuntu package)
libkf5auth5 (Ubuntu package)
kf5-kauth

How to mitigate CVE-2019-7443

Install updates from vendor's website.

kauth - update to 5.50.0
libkf5auth-data (Ubuntu package) - update to Ubuntu Pro
libkf5auth5 (Ubuntu package) - update to Ubuntu Pro
kf5-kauth - addressed in versions 5.52.0-2.el7, 5.54.0-2.fc28, 5.54.0-2.fc29

External References

Related Security Bulletins