UBUNTU-CVE-2017-18018

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    UBUNTU-CVE-2017-18018

    Published: 4 Jan 2018Last Modified: 24 Oct 2025
    Upstream:
    CVE-2017-18018

    Summary:

    Details: In GNU Coreutils through 8.29, chown-core.c in chown and chgrp does not prevent replacement of a plain file with a symlink during use of the POSIX "-R -L" options, which allows local users to modify the ownership of arbitrary files by leveraging a race condition.

    References: https://ubuntu.com/security/CVE-2017-18018, http://lists.gnu.org/archive/html/coreutils/2017-12/msg00045.html, http://www.openwall.com/lists/oss-security/2018/01/04/3, https://lists.gnu.org/archive/html/coreutils/2017-12/msg00072.html, https://lists.gnu.org/archive/html/coreutils/2017-12/msg00073.html, https://www.cve.org/CVERecord?id=CVE-2017-18018

    Affected packages

    Package

    Name: coreutils

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

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    8.20-3ubuntu5

    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