Vulnerability 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 Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Canonical | Ubuntu Linux | 12.04 |
| Debian | Debian Linux | - |
| Xmlsoft | Libxml2 | <= 2.9.8 |
Related Weaknesses (CWE)
References
- https://access.redhat.com/errata/RHSA-2019:1543
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=901817Mailing ListThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1595985Issue TrackingThird Party Advisory
- https://gitlab.gnome.org/GNOME/libxml2/issues/10Vendor Advisory
- 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/Third Party Advisory
- https://usn.ubuntu.com/3739-2/Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:1543
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=901817Mailing ListThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1595985Issue TrackingThird Party Advisory
- https://gitlab.gnome.org/GNOME/libxml2/issues/10Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2018/09/msg00035.html
- https://lists.debian.org/debian-lts-announce/2020/09/msg00009.html
FAQ
What is CVE-2018-14404?
CVE-2018-14404 is a vulnerability with a CVSS score of 6.5 (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. ...
How severe is CVE-2018-14404?
CVE-2018-14404 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2018-14404?
Check the references section above for vendor advisories and patch information. Affected products include: Canonical Ubuntu Linux, Debian Debian Linux, Xmlsoft Libxml2.