CVE-2018-14404

Published: 19 July 2018

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.

Priority

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package	Release	Status
libxml2 Launchpad, Ubuntu, Debian	artful	Ignored (end of life)
	bionic	Released (2.9.4+dfsg1-6.1ubuntu1.2)
	trusty	Released (2.9.1+dfsg1-3ubuntu4.13)
	upstream	Released (2.9.9)
	xenial	Released (2.9.3+dfsg1-1ubuntu0.6)
	Patches: other: https://gitlab.gnome.org/GNOME/libxml2/commit/a436374994c47b12d5de1b8b1d191a098fa23594

Severity score breakdown

Parameter	Value
Base score	7.5
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

Bugs

Join the discussion

Canonical is offering Expanded Security Maintenance

Canonical is offering Ubuntu Expanded Security Maintenance (ESM) for security fixes and essential packages.

Find out more about ESM ›