high
7.5
CWE
476
Advisory Published
Advisory Published
Updated

CVE-2018-14404: Null Pointer Dereference

First published: Mon Jun 18 2018(Updated: )

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.

Credit: cve@mitre.org cve@mitre.org

Affected SoftwareAffected VersionHow to fix
rubygems/nokogiri<1.8.5
1.8.5
redhat/libxml2<0:2.9.1-6.el7.4
0:2.9.1-6.el7.4
redhat/libxml2<0:2.9.7-7.el8
0:2.9.7-7.el8
redhat/cockpit-ovirt<0:0.13.10-1.el7e
0:0.13.10-1.el7e
redhat/redhat-release-virtualization-host<0:4.3.9-2.el7e
0:4.3.9-2.el7e
redhat/redhat-virtualization-host<0:4.3.9-20200324.0.el7_8
0:4.3.9-20200324.0.el7_8
IBM ISAM<=9.0.7
IBM Security Verify Access<=10.0.0
Canonical Ubuntu Linux=12.04
Canonical Ubuntu Linux=14.04
Canonical Ubuntu Linux=16.04
Canonical Ubuntu Linux=18.04
Debian Debian Linux
Xmlsoft Libxml2<=2.9.8
debian/libxml2
2.9.4+dfsg1-7+deb10u4
2.9.4+dfsg1-7+deb10u6
2.9.10+dfsg-6.7+deb11u4
2.9.14+dfsg-1.3~deb12u1
2.9.14+dfsg-1.3
ubuntu/libxml2<2.9.4+dfsg1-6.1ubuntu1.2
2.9.4+dfsg1-6.1ubuntu1.2
ubuntu/libxml2<2.9.1+dfsg1-3ubuntu4.13
2.9.1+dfsg1-3ubuntu4.13
ubuntu/libxml2<2.9.9
2.9.9
ubuntu/libxml2<2.9.3+dfsg1-1ubuntu0.6
2.9.3+dfsg1-1ubuntu0.6
=12.04
=14.04
=16.04
=18.04
<=2.9.8
redhat/libxml2<2.9.9
2.9.9

Remedy

https://gitlab.gnome.org/GNOME/libxml2/commit/a436374994c47b12d5de1b8b1d191a098fa23594

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the CVE ID of this vulnerability?

    The CVE ID of this vulnerability is CVE-2018-14404.

  • What is the severity of CVE-2018-14404?

    The severity of CVE-2018-14404 is high with a CVSS score of 7.5.

  • Which software is affected by CVE-2018-14404?

    The software affected by CVE-2018-14404 includes libxml2 version 2.9.8 and earlier, nokogiri version 1.8.5, and various versions of Ubuntu, Debian, Red Hat, IBM ISAM, and IBM Security Verify Access.

  • How can I fix CVE-2018-14404?

    To fix CVE-2018-14404, you should update libxml2 to version 2.9.9 or later, or update the affected software or packages to the recommended versions provided by the respective vendors.

  • Where can I find more information about CVE-2018-14404?

    More information about CVE-2018-14404 can be found on the NIST National Vulnerability Database (NVD), Red Hat Security Advisory, and Debian bug report websites.

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