UBUNTU-CVE-2018-16888

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    UBUNTU-CVE-2018-16888

    Published: 14 Jan 2019Last Modified: 22 Apr 2026
    Upstream:
    CVE-2018-16888
    Aliases:
    USN-4269-1

    Summary:

    Details: It was discovered systemd does not correctly check the content of PIDFile files before using it to kill processes. When a service is run from an unprivileged user (e.g. User field set in the service file), a local attacker who is able to write to the PIDFile of the mentioned service may use this flaw to trick systemd into killing other services and/or privileged processes. Versions before v237 are vulnerable.

    References: https://ubuntu.com/security/CVE-2018-16888, https://ubuntu.com/security/notices/USN-4269-1, https://www.cve.org/CVERecord?id=CVE-2018-16888

    Affected packages

    Package

    Name: systemd

    Purl: pkg:deb/ubuntu/[email protected]?arch=source&distro=xenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -229-4ubuntu21.27

    Affected versions

    225-1ubuntu9

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High