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.
EPSS: 0.037 (88.5th percentile) — read the EPSS interpretation.
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.
Affected products
- Xmlsoft Libxml2
- Canonical Ubuntu_linux — versions 12.04, 14.04, 16.04
- Debian Debian_linux
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (mailing-list, x_refsource_MLIST)
- cve@mitre.org (x_refsource_MISC, Vendor Advisory)
- cve@mitre.org (x_refsource_UBUNTU, vendor-advisory, Third Party Advisory)
- cve@mitre.org (Mailing List, Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (x_refsource_UBUNTU, vendor-advisory, Third Party Advisory)
- cve@mitre.org (Third Party Advisory, x_refsource_MISC, Issue Tracking)
- cve@mitre.org (x_refsource_REDHAT, vendor-advisory)
- cve@mitre.org (x_refsource_CONFIRM)
- cve@mitre.org (mailing-list, x_refsource_MLIST)
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.