CVE Vulnerabilities

CVE-2018-14404

NULL Pointer Dereference

Published: Jul 19, 2018 | Modified: Nov 21, 2024
CVSS 3.x
7.5
HIGH
Source:
NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.x
5 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P
RedHat/V2
RedHat/V3
6.5 MODERATE
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Ubuntu
MEDIUM

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.

Weakness

A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.

Affected Software

Name Vendor Start Version End Version
Ubuntu_linux Canonical 12.04 (including) 12.04 (including)
Ubuntu_linux Canonical 14.04 (including) 14.04 (including)
Ubuntu_linux Canonical 16.04 (including) 16.04 (including)
Ubuntu_linux Canonical 18.04 (including) 18.04 (including)
Debian_linux Debian - (including) - (including)
JBoss Core Services Apache HTTP Server 2.4.29 SP2 RedHat libxml2 *
Red Hat Ansible Tower 3.5 for RHEL 7 RedHat ansible-tower-35/ansible-tower:3.5.6-1 *
Red Hat Ansible Tower 3.6 for RHEL 7 RedHat ansible-tower-36/ansible-tower:3.6.4-1 *
Red Hat Enterprise Linux 7 RedHat libxml2-0:2.9.1-6.el7.4 *
Red Hat Enterprise Linux 8 RedHat libxml2-0:2.9.7-7.el8 *
Red Hat Enterprise Linux 8 RedHat libxml2-0:2.9.7-7.el8 *
Red Hat Virtualization 4 for Red Hat Enterprise Linux 7 RedHat cockpit-ovirt-0:0.13.10-1.el7ev *
Red Hat Virtualization 4 for Red Hat Enterprise Linux 7 RedHat redhat-release-virtualization-host-0:4.3.9-2.el7ev *
Red Hat Virtualization 4 for Red Hat Enterprise Linux 7 RedHat redhat-virtualization-host-0:4.3.9-20200324.0.el7_8 *
Libxml2 Ubuntu artful *
Libxml2 Ubuntu bionic *
Libxml2 Ubuntu devel *
Libxml2 Ubuntu trusty *
Libxml2 Ubuntu upstream *
Libxml2 Ubuntu xenial *

Potential Mitigations

References