UBUNTU-CVE-2019-14751

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    UBUNTU-CVE-2019-14751

    Published: 20 Aug 2019Last Modified: 4 Feb 2026
    Upstream:
    CVE-2019-14751
    Aliases:
    USN-4106-1

    Summary:

    Details: NLTK Downloader before 3.4.5 is vulnerable to a directory traversal, allowing attackers to write arbitrary files via a ../ (dot dot slash) in an NLTK package (ZIP archive) that is mishandled during extraction.

    References: https://ubuntu.com/security/CVE-2019-14751, https://github.com/nltk/nltk/blob/3.4.5/ChangeLog, https://salvatoresecurity.com/zip-slip-in-nltk-cve-2019-14751/, https://github.com/mssalvatore/CVE-2019-14751_PoC, https://ubuntu.com/security/notices/USN-4106-1, https://www.cve.org/CVERecord?id=CVE-2019-14751

    Affected packages

    Package

    Name: nltk

    Purl: pkg:deb/ubuntu/[email protected]~b9-0ubuntu4.1~esm2?arch=source&distro=trusty/esm

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2.0~b9-0ubuntu4.1~esm2

    Affected versions

    2.0~b9-0ubuntu4

    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