Out-of-bounds Write Affecting systemd-sysvinit package, versions <234-24.30.1


Severity

Recommended
high

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.04% (12th percentile)

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  • Snyk IDSNYK-SLES150-SYSTEMDSYSVINIT-2750162
  • published14 Apr 2022
  • disclosed28 May 2019

Introduced: 28 May 2019

CVE-2019-6454  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade SLES:15.0 systemd-sysvinit to version 234-24.30.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream systemd-sysvinit package and not the systemd-sysvinit package as distributed by SLES. See How to fix? for SLES:15.0 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