Medium severity · published Jul 19, 2018
CVE-2018-14404
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…
6.5
CVSS
3.7%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)3.7% · higher than 90% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
All versions, or not specified · source: NVD
LI
Libxml2 · Xmlsoft
through 2.9.8 · source: NVD
UL
Ubuntu Linux · Canonical
12.04; 14.04; 16.04; 18.04 · source: NVD
SS
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP · Siemens
V3.1.0 before V3.1.5; V3.1.0 before V3.1.5 · source: CISA
SS
SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP · Siemens
V3.1.0 before V3.1.5; V3.1.0 before V3.1.5 · source: CISA
SS
SIPLUS S7-1500 CPU 1518-4 PN/DP MFP · Siemens
V3.1.0 before V3.1.5 · source: CISA
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-14404
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-14404
access.redhat.com
https://access.redhat.com/errata/RHSA-2019:1543
Mailing List
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=901817
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=1595985
Vendor Advisory
https://gitlab.gnome.org/GNOME/libxml2/issues/10
lists.debian.org
https://lists.debian.org/debian-lts-announce/2018/09/msg00035.html
lists.debian.org
https://lists.debian.org/debian-lts-announce/2020/09/msg00009.html
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