CVE-2018-14404

high-risk

Published 2018-07-19

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.

Do I need to act?

20.0% chance of exploitation in next 30 days

EPSS score — higher than 80% of all CVEs

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 6.5/10 Medium

NETWORK / LOW complexity

Affected Products (6)

Ubuntu Linux

Debian Linux

Libxml2

Affected Vendors

Debian Xmlsoft Canonical

References (18)

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

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/

Third Party Advisory https://usn.ubuntu.com/3739-1/

Third Party Advisory https://usn.ubuntu.com/3739-2/