Out-of-bounds Write Affecting systemd-networkd package, versions <0:219-62.0.4.el7_6.5


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.04% (12th percentile)

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  • Snyk IDSNYK-ORACLE7-SYSTEMDNETWORKD-2530868
  • published10 Apr 2022
  • disclosed21 Mar 2019

Introduced: 21 Mar 2019

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

How to fix?

Upgrade Oracle:7 systemd-networkd to version 0:219-62.0.4.el7_6.5 or higher.
This issue was patched in ELSA-2019-0368.

NVD Description

Note: Versions mentioned in the description apply only to the upstream systemd-networkd package and not the systemd-networkd package as distributed by Oracle. See How to fix? for Oracle:7 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