medium
5.5
CWE
787
Advisory Published
CVE Published
Updated

CVE-2019-6454

First published: Thu Jan 17 2019(Updated: )

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).

Credit: cve@mitre.org cve@mitre.org cve@mitre.org

Affected SoftwareAffected VersionHow to fix
debian/systemd
247.3-7+deb11u5
247.3-7+deb11u6
252.31-1~deb12u1
257~rc3-1
257-1
systemd=239
SUSE Linux=15.0
NetApp Active IQ
Debian Linux=8.0
Debian Linux=9.0
Red Hat Fedora=29
Ubuntu=16.04
Ubuntu=18.04
Ubuntu=18.10
Red Hat Enterprise Linux=8.0
Red Hat Enterprise Linux Compute Node EUS=7.5
Red Hat Enterprise Linux Desktop=7.0
Red Hat Enterprise Linux Server EUS=7.4
Red Hat Enterprise Linux Server EUS=7.5
Red Hat Enterprise Linux Server EUS=8.1
Red Hat Enterprise Linux Server EUS=8.2
Red Hat Enterprise Linux Server EUS=8.4
Red Hat Enterprise Linux for IBM Z Systems (s390x)=7.4
Red Hat Enterprise Linux for IBM Z Systems (s390x)=7.5
Red Hat Enterprise Linux for IBM Z Systems (s390x)=8.1
Red Hat Enterprise Linux for IBM Z Systems (s390x)=8.2
Red Hat Enterprise Linux for IBM Z Systems (s390x)=8.4
Red Hat Enterprise Linux for Power, Big Endian EUS=7.4
Red Hat Enterprise Linux for Power, little endian=8.0
Red Hat Enterprise Linux for Power, little endian - Extended Update Support=7.4
Red Hat Enterprise Linux for Power, little endian - Extended Update Support=7.5
Red Hat Enterprise Linux for Power, little endian - Extended Update Support=8.1
Red Hat Enterprise Linux for Power, little endian - Extended Update Support=8.2
Red Hat Enterprise Linux for Power, little endian - Extended Update Support=8.4
Red Hat Enterprise Linux Server=7.0
Red Hat Enterprise Linux Server=7.3
Red Hat Enterprise Linux Server=7.4
Red Hat Enterprise Linux Server=7.6
Red Hat Enterprise Linux Server=8.2
Red Hat Enterprise Linux Server=8.4
Red Hat Enterprise Linux Server=7.6
Red Hat Enterprise Linux for SAP Applications for Power, little endian - Extended Update Support=7.3
Red Hat Enterprise Linux for SAP Applications for Power, little endian - Extended Update Support=7.4
Red Hat Enterprise Linux for SAP Applications for Power, little endian - Extended Update Support=8.0
Red Hat Enterprise Linux for SAP Applications for Power, little endian - Extended Update Support=8.1
Red Hat Enterprise Linux for SAP Applications for Power, little endian - Extended Update Support=8.2
Red Hat Enterprise Linux Server=7.3
Red Hat Enterprise Linux Server=7.4
Red Hat Enterprise Linux Server=7.6
Red Hat Enterprise Linux Server=8.2
Red Hat Enterprise Linux Server=8.4
Red Hat Enterprise Linux Server Update Services for SAP Solutions=7.3
Red Hat Enterprise Linux Server Update Services for SAP Solutions=7.4
Red Hat Enterprise Linux Server Update Services for SAP Solutions=8.0
Red Hat Enterprise Linux Server Update Services for SAP Solutions=8.1
Red Hat Enterprise Linux Server Update Services for SAP Solutions=8.2
Red Hat Enterprise Linux Workstation=7.0
McAfee Web Gateway Cloud Service<7.7.2.21
McAfee Web Gateway Cloud Service>=7.8.0<7.8.2.8
McAfee Web Gateway Cloud Service>=8.0.0<8.1.1

Remedy

http://www.openwall.com/lists/oss-security/2019/02/18/3

Remedy

https://github.com/systemd/systemd/commits/master/src/libsystemd/sd-bus/bus-objects.c

Remedy

https://kc.mcafee.com/corporate/index?page=content&id=SB10278

Never miss a vulnerability like this again

Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.

Read MoreStart Free Trial

Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2019-6454?

    CVE-2019-6454 has been classified as a high severity vulnerability.

  • How do I fix CVE-2019-6454?

    To fix CVE-2019-6454, upgrade the systemd package to version 247.3-7+deb11u5 or higher.

  • Which systems are affected by CVE-2019-6454?

    CVE-2019-6454 affects systemd version 239 and its various distributions, including Debian, Ubuntu, and Red Hat.

  • What impact does CVE-2019-6454 have?

    An unprivileged local user can exploit CVE-2019-6454 to execute arbitrary code via crafted D-Bus messages.

  • Is CVE-2019-6454 exploitable remotely?

    No, CVE-2019-6454 requires local access to the system to exploit.

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2025 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203