CVE-2018-14404

Advisory lineage Upstream: 0 Downstream: 21
Modified
Published: 19 Jul 2018, 13:00
Last modified:03 Dec 2025, 21:07

Vulnerability Summary

Overall Risk (default)
medium
34/100
CVSS Score
7.5 HIGH
v3.0 (nvd)
EPSS Score
20.01% HIGH
20% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

19 Jul 2018, 13:00
Published
Vulnerability first disclosed
03 Dec 2025, 21:07
Last Modified
Vulnerability information updated

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 Metrics

  • v3.1•MEDIUM•Score: 6.5CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
  • v3.0•HIGH•Score: 7.5CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • v2.0•MEDIUM•Score: 5AV:N/AC:L/Au:N/C:N/I:N/A:P

EPSS Trends

Current EPSS score: 20.01%• Percentile: 96%

Techniques & Countermeasures

  • CWE-476•NULL Pointer Dereference

    The product dereferences a pointer that it expects to be valid but is NULL.

Affected Systems

  • canonical•ubuntu_linux

    12.04 | 14.04 | 16.04 | 18.04

  • debian•debian_linux

    na

  • xmlsoft•libxml2

    ≤ 2.9.8

References (9)