Out-of-Bounds Affecting systemd package, versions <240-6


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.04% (12th percentile)

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  • Snyk IDSNYK-DEBIAN12-SYSTEMD-1560560
  • published19 Feb 2019
  • disclosed21 Mar 2019

Introduced: 19 Feb 2019

CVE-2019-6454  (opens in a new tab)
CWE-119  (opens in a new tab)

How to fix?

Upgrade Debian:12 systemd to version 240-6 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream systemd package and not the systemd package as distributed by Debian. See How to fix? for Debian:12 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).

CVSS Scores

version 3.1