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 Software | Affected Version | How 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 |
| 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 | |
| redhat/libxml2 | <2.9.9 | 2.9.9 |
| IBM ISAM | <=9.0.7 | |
| IBM Security Verify Access | <=10.0.0 | |
| debian/libxml2 | 2.9.10+dfsg-6.7+deb11u4 2.9.10+dfsg-6.7+deb11u5 2.9.14+dfsg-1.3~deb12u1 2.12.7+dfsg+really2.9.14-0.1 2.12.7+dfsg+really2.9.14-0.2 |
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Reference Links
- https://nvd.nist.gov/vuln/detail/CVE-2018-14404
- 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://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/
- https://github.com/sparklemotion/nokogiri/issues/1785
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/nokogiri/CVE-2018-14404.yml
- https://github.com/advisories/GHSA-6qvp-r6r3-9p7h (Advisory)
- https://www.cve.org/CVERecord?id=CVE-2018-14404 https://nvd.nist.gov/vuln/detail/CVE-2018-14404
- https://access.redhat.com/errata/RHBA-2020:1539
- https://access.redhat.com/errata/RHBA-2020:1540
- https://access.redhat.com/errata/RHSA-2020:1190
- https://access.redhat.com/errata/RHSA-2020:1827
- https://access.redhat.com/errata/RHBA-2020:1310
- https://access.redhat.com/security/cve/cve-2018-14404
- https://github.com/GNOME/libxml2/blob/master/xpath.c
- https://www.debian.org/Bugs/server-control#forwarded
- https://security-tracker.debian.org/tracker/CVE-2018-14404
- https://launchpad.net/bugs/cve/CVE-2018-14404
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1595986
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1595988
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1595987
- https://access.redhat.com/support/policy/updates/errata/
- https://access.redhat.com/security/updates/classification/
- https://gitlab.gnome.org/GNOME/libxml2/issues/5
- https://gitlab.gnome.org/GNOME/libxml2/commit/a436374994c47b12d5de1b8b1d191a098fa23594
- https://exchange.xforce.ibmcloud.com/vulnerabilities/147260
- https://www.ibm.com/support/pages/node/6348046 (Advisory)
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-14404
- https://ubuntu.com/security/CVE-2018-14404
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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