USN-3748-1

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    USN-3748-1

    Published: 21 Aug 2018Last Modified: 10 Feb 2026

    Summary: base-files vulnerability

    Details: Sander Bos discovered that the MOTD update script incorrectly handled temporary files. A local attacker could use this issue to cause a denial of service, or possibly escalate privileges if kernel symlink restrictions were disabled.

    References: https://ubuntu.com/security/notices/USN-3748-1, https://ubuntu.com/security/CVE-2018-6557

    Affected packages

    Package

    Name: base-files

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

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -10.1ubuntu2.2

    Affected versions

    9.6ubuntu102

    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