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

Severity

 Recommended
0.0
medium
0
10

Snyk's Security Team recommends NVD's CVSS assessment

    Threat Intelligence

    EPSS
    0.04% (12th percentile)

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  • Snyk ID SNYK-DEBIAN11-SYSTEMD-517312
  • published 19 Feb 2019
  • disclosed 21 Mar 2019
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Introduced: 19 Feb 2019

CVE-2019-6454 Open this link in a new tab
CWE-119 Open this link in a new tab

How to fix?

Upgrade Debian:11 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:11 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).

References

CVSS Scores

version 3.1
Expand this section

NVD

Recommended
5.5 medium
  • Attack Vector (AV)
    Local
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    Low
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    None
  • Integrity (I)
    None
  • Availability (A)
    High