---
cve: "CVE-2019-6454"
severity: "LOW"
cvss: 3.1
epss: "2%"
vendor: "n/a"
kev: false
exploited: false
published: "2019-03-21 16:01:08"
tags: [cve, security, low]
source: tsecurity.de CVE-Dossier
exported: "2026-09-11T09:32:39+02:00"
---

# CVE-2019-6454

> 3.1 LOW · 🧪 PoC

## Beschreibung

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).

## Referenzen

- <https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/N67IOBOTDOMVNQJ5QRU2MXLEECXPGNVJ/>
- <http://www.openwall.com/lists/oss-security/2019/02/18/3>
- <http://www.securityfocus.com/bid/107081>
- <https://usn.ubuntu.com/3891-1/>
- <https://access.redhat.com/errata/RHSA-2019:0368>
- <https://github.com/systemd/systemd/commits/master/src/libsystemd/sd-bus/bus-objects.c>
- <http://lists.opensuse.org/opensuse-security-announce/2019-02/msg00070.html>
- <http://www.openwall.com/lists/oss-security/2019/02/19/1>
- <https://lists.debian.org/debian-lts-announce/2019/02/msg00031.html>
- <https://www.debian.org/security/2019/dsa-4393>
- <https://security.netapp.com/advisory/ntap-20190327-0004/>
- <https://kc.mcafee.com/corporate/index?page=content&id=SB10278>
- <https://access.redhat.com/errata/RHSA-2019:0990>
- <http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00062.html>
- <https://access.redhat.com/errata/RHSA-2019:1322>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2019-6454) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_