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CVE-2018-6954 Affecting systemd package, versions <238-1

low

Snyk CVSS

    Attack Complexity Low
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    EPSS 0.04% (6th percentile)
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NVD
7.8 high
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SUSE
7.1 high
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Red Hat
7 high

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  • Snyk ID SNYK-DEBIAN10-SYSTEMD-305046
  • published 13 Feb 2018
  • disclosed 13 Feb 2018
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Introduced: 13 Feb 2018

CVE-2018-6954 Open this link in a new tab

How to fix?

Upgrade Debian:10 systemd to version 238-1 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:10 relevant fixed versions and status.

systemd-tmpfiles in systemd through 237 mishandles symlinks present in non-terminal path components, which allows local users to obtain ownership of arbitrary files via vectors involving creation of a directory and a file under that directory, and later replacing that directory with a symlink. This occurs even if the fs.protected_symlinks sysctl is turned on.

References