NULL pointer dereference in Xmlsoft Libxml2
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 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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.036 (89.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 89th percentile — 89.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.036 · newest: 0.036 · change: 0.000
Affected products
- Xmlsoft Libxml2
- Canonical Ubuntu Linux — versions 12.04, 14.04, 16.04
- Debian Linux
Weakness classification (CWE)
Public proof-of-concept exploits
References
- lists.debian.org/debian-lts-announce/2018/09/msg00035.html (mailing-list)
- gitlab.gnome.org/GNOME/libxml2/issues/10 (Vendor Advisory)
- usn.ubuntu.com/3739-1/ (vendor-advisory, Third Party Advisory)
- bugs.debian.org/cgi-bin/bugreport.cgi (Mailing List, Third Party Advisory)
- usn.ubuntu.com/3739-2/ (vendor-advisory, Third Party Advisory)
- bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Issue Tracking)
- access.redhat.com/errata/RHSA-2019:1543 (vendor-advisory)
- security.netapp.com/advisory/ntap-20190719-0002/
- lists.debian.org/debian-lts-announce/2020/09/msg00009.html (mailing-list)
Frequently asked questions
- What is CVE-2018-14404?
- CVE-2018-14404 is a medium-severity vulnerability in Xmlsoft Libxml2, classified under NULL Pointer Dereference. CVSS score: 6.5/10. Published 2018-07-19.
- How severe is CVE-2018-14404?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2018-14404 known to be exploited?
- 21 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.