UBUNTU-CVE-2018-1000001

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    UBUNTU-CVE-2018-1000001

    Published: 11 Jan 2018Last Modified: 22 Apr 2026

    Summary:

    Details: In glibc 2.26 and earlier there is confusion in the usage of getcwd() by realpath() which can be used to write before the destination buffer leading to a buffer underflow and potential code execution.

    References: https://ubuntu.com/security/CVE-2018-1000001, http://www.openwall.com/lists/oss-security/2018/01/11/5, https://sourceware.org/bugzilla/show_bug.cgi?id=18203, https://www.halfdog.net/Security/2017/LibcRealpathBufferUnderflow/, https://ubuntu.com/security/notices/USN-3534-1, https://ubuntu.com/security/notices/USN-3536-1, https://lists.samba.org/archive/rsync/2018-February/031478.html, https://www.cve.org/CVERecord?id=CVE-2018-1000001, https://ubuntu.com/security/notices/USN-4768-1

    Affected packages

    Package

    Name: eglibc

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

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2.19-0ubuntu6.14

    Affected versions

    2.17-93ubuntu4

    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
    UBUNTU-CVE-2018-1000001 | CVE-DB