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Vulnerability Details : CVE-2019-6454

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).
Publish Date : 2019-03-21 Last Update Date : 2019-06-04
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- CVSS Scores & Vulnerability Types

CVSS Score
4.9
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact Complete (There is a total shutdown of the affected resource. The attacker can render the resource completely unavailable.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Denial Of ServiceOverflow
CWE ID 119

- Related OVAL Definitions

Title Definition Id Class Family
RHSA-2019:0368: systemd security update (Important) oval:com.redhat.rhsa:def:20190368 unix
RHSA-2019:0990: systemd security and bug fix update (Moderate) oval:com.redhat.rhsa:def:20190990 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2019-6454

# Product Type Vendor Product Version Update Edition Language
1 OS Canonical Ubuntu Linux 16.04 ~~lts~~~ Version Details Vulnerabilities
2 OS Canonical Ubuntu Linux 18.04 ~~lts~~~ Version Details Vulnerabilities
3 OS Canonical Ubuntu Linux 18.10 Version Details Vulnerabilities
4 OS Debian Debian Linux 8.0 Version Details Vulnerabilities
5 OS Debian Debian Linux 9.0 Version Details Vulnerabilities
6 OS Fedoraproject Fedora 29 Version Details Vulnerabilities
7 Application Freedesktop Systemd 239 Version Details Vulnerabilities
8 Application Netapp Active Iq Performance Analytics Services - Version Details Vulnerabilities
9 OS Opensuse Leap 15.0 Version Details Vulnerabilities
10 OS Redhat Enterprise Linux Desktop 7.0 Version Details Vulnerabilities
11 OS Redhat Enterprise Linux Server 7.0 Version Details Vulnerabilities
12 OS Redhat Enterprise Linux Server Aus 7.6 Version Details Vulnerabilities
13 OS Redhat Enterprise Linux Server Eus 7.6 Version Details Vulnerabilities
14 OS Redhat Enterprise Linux Server Tus 7.6 Version Details Vulnerabilities
15 OS Redhat Enterprise Linux Workstation 7.0 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Canonical Ubuntu Linux 3
Debian Debian Linux 2
Fedoraproject Fedora 1
Freedesktop Systemd 1
Netapp Active Iq Performance Analytics Services 1
Opensuse Leap 1
Redhat Enterprise Linux Desktop 1
Redhat Enterprise Linux Server 1
Redhat Enterprise Linux Server Aus 1
Redhat Enterprise Linux Server Eus 1
Redhat Enterprise Linux Server Tus 1
Redhat Enterprise Linux Workstation 1

- References For CVE-2019-6454

https://security.netapp.com/advisory/ntap-20190327-0004/ CONFIRM
https://www.debian.org/security/2019/dsa-4393
DEBIAN DSA-4393-1
https://usn.ubuntu.com/3891-1/
UBUNTU USN-3891-1
https://access.redhat.com/errata/RHSA-2019:1322
REDHAT RHSA-2019:1322
https://github.com/systemd/systemd/commits/master/src/libsystemd/sd-bus/bus-objects.c
https://kc.mcafee.com/corporate/index?page=content&id=SB10278 CONFIRM
http://www.securityfocus.com/bid/107081
BID 107081 systemd CVE-2019-6454 Local Denial of Service Vulnerability Release Date:2019-02-20
https://access.redhat.com/errata/RHSA-2019:0368
REDHAT RHSA-2019:0368
https://access.redhat.com/errata/RHSA-2019:0990
REDHAT RHSA-2019:0990
https://lists.fedoraproject.org/archives/list/[email protected]/message/N67IOBOTDOMVNQJ5QRU2MXLEECXPGNVJ/
FEDORA FEDORA-2019-8434288a24
http://www.openwall.com/lists/oss-security/2019/02/18/3
MLIST [oss-security] 20190218 CVE-2019-6454: systemd (PID1) crash with specially crafted D-Bus message
http://www.openwall.com/lists/oss-security/2019/02/19/1
MLIST [oss-security] 20190219 CVE-2019-6454: systemd (PID1) crash with specially crafted D-Bus message
http://lists.opensuse.org/opensuse-security-announce/2019-02/msg00070.html
SUSE SUSE-SA:2019:0255-1
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00062.html
SUSE openSUSE-SU-2019:1450
https://lists.debian.org/debian-lts-announce/2019/02/msg00031.html
MLIST [SECURITY] [DLA 1684-1] 20190219 systemd security update

- Metasploit Modules Related To CVE-2019-6454

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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