CVE-2018-15518

Publication date 26 December 2018

Last updated 25 August 2025

Ubuntu priority

Why this priority?

Cvss 3 Severity Score

Score breakdown

Description

QXmlStream in Qt 5.x before 5.11.3 has a double-free or corruption during parsing of a specially crafted illegal XML document.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
qtbase-opensource-src	19.04 disco	Fixed 5.11.3+dfsg-2ubuntu1
	18.10 cosmic	Fixed 5.11.1+dfsg-7ubuntu3.1
	18.04 LTS bionic	Fixed 5.9.5+dfsg-0ubuntu2.1
	16.04 LTS xenial	Fixed 5.5.1+dfsg-16ubuntu7.6
	14.04 LTS trusty	Not in release

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
qtbase-opensource-src	Upstream: https://codereview.qt-project.org/gitweb?p=qt%2Fqtbase.git;a=commit;h=6256729a6da532079505edfe4c56a6ef29cd8ab8

Severity score breakdown

CVSS version: CVSS v3.0

Base score 8.8 · High

Base metrics

Parameter	Value
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	Required
Scope	Unchanged
Confidentiality impact	High
Integrity impact	High
Availability impact	High

Scores

Parameter	Value
Base score	8.8 · High
Exploitability score	-
Impact score	-

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

USN-4003-1
Qt vulnerabilities
3 June 2019

Other references

Access our resources on patching vulnerabilities