UBUNTU-CVE-2018-1000156

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    UBUNTU-CVE-2018-1000156

    Published: 6 Apr 2018Last Modified: 4 Feb 2026

    Summary:

    Details: GNU Patch version 2.7.6 contains an input validation vulnerability when processing patch files, specifically the EDITOR_PROGRAM invocation (using ed) can result in code execution. This attack appear to be exploitable via a patch file processed via the patch utility. This is similar to FreeBSD's CVE-2015-1418 however although they share a common ancestry the code bases have diverged over time.

    References: https://ubuntu.com/security/CVE-2018-1000156, https://rachelbythebay.com/w/2018/04/05/bangpatch/, https://twitter.com/kurtseifried/status/982028968877436928, https://ubuntu.com/security/notices/USN-3624-1, https://ubuntu.com/security/notices/USN-3624-2, https://www.cve.org/CVERecord?id=CVE-2018-1000156

    Affected packages

    Package

    Name: patch

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

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2.7.1-4ubuntu2.4

    Affected versions

    2.7.1-3
    2.7.1-4
    2.7.1-4ubuntu1
    2.7.1-4ubuntu2
    2.7.1-4ubuntu2.3

    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