Homepage
About Snyk

Improper Input Validation Affecting systemd-pam package, versions <0:239-13.el8_0.3

medium

Snyk CVSS

    Attack Complexity High
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    EPSS 0.04% (10th percentile)
Expand this section
NVD
5.5 medium
Expand this section
SUSE
5.5 medium
Expand this section
Red Hat
7 high

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk ID SNYK-CENTOS8-SYSTEMDPAM-1978203
  • published 26 Jul 2021
  • disclosed 18 Feb 2019
Report a new vulnerability Found a mistake?

Introduced: 18 Feb 2019

CVE-2019-6454 Open this link in a new tab
CWE-20 Open this link in a new tab

How to fix?

Upgrade Centos:8 systemd-pam to version 0:239-13.el8_0.3 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream systemd-pam package and not the systemd-pam package as distributed by Centos. See How to fix? for Centos:8 relevant fixed versions and status.

An issue was discovered in sd-bus in systemd 239. bus_process_object() in libsystemd/sd-bus/bus-objects.c allocates a variable-length stack buffer for temporarily storing the object path of incoming D-Bus messages. An unprivileged local user can exploit this by sending a specially crafted message to PID1, causing the stack pointer to jump over the stack guard pages into an unmapped memory region and trigger a denial of service (systemd PID1 crash and kernel panic).

References