GHSA-6qvp-r6r3-9p7h

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    GHSA-6qvp-r6r3-9p7h

    Published: 17 Jan 2019Last Modified: 5 Dec 2025

    Summary: Nokogiri NULL Pointer Dereference

    Details: A NULL pointer dereference vulnerability exists in the `xpath.c:xmlXPathCompOpEval()` function of libxml2 through 2.9.8 when parsing an invalid XPath expression in the `XPATH_OP_AND` or `XPATH_OP_OR` case. Applications processing untrusted XSL format inputs with the use of the libxml2 library may be vulnerable to a denial of service attack due to a crash of the application.

    References: https://nvd.nist.gov/vuln/detail/CVE-2018-14404, https://github.com/sparklemotion/nokogiri/issues/1785, https://access.redhat.com/errata/RHSA-2019:1543, https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=901817, https://bugzilla.redhat.com/show_bug.cgi?id=1595985, https://github.com/rubysec/ruby-advisory-db/blob/master/gems/nokogiri/CVE-2018-14404.yml, https://gitlab.gnome.org/GNOME/libxml2/issues/10, https://lists.debian.org/debian-lts-announce/2018/09/msg00035.html, https://lists.debian.org/debian-lts-announce/2020/09/msg00009.html, https://security.netapp.com/advisory/ntap-20190719-0002, https://usn.ubuntu.com/3739-1, https://usn.ubuntu.com/3739-2

    Affected packages

    Package

    Name: nokogiri

    Purl: pkg:gem/nokogiri

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -1.8.5

    Affected versions

    1.0.0
    1.0.1
    1.0.2
    1.0.3
    1.0.4
    1.0.5
    1.0.6
    1.0.7

    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