CVE-2018-15518

qt5-qtbase: Double free in QXmlStreamReader

Severity Score

8.8

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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

QXmlStream en Qt 5.x en versiones anteriores a la 5.11.3 tiene una doble liberación (double free) o una corrupción durante el análisis de un documento XML ilegal especialmente manipulado.

It was discovered that Qt incorrectly handled certain XML documents. A remote attacker could use this issue with a specially crafted XML document to cause Qt to crash, resulting in a denial of service, or possibly execute arbitrary code. It was discovered that Qt incorrectly handled certain GIF images. A remote attacker could use this issue with a specially crafted GIF image to cause Qt to crash, resulting in a denial of service, or possibly execute arbitrary code. Various other issues were also addressed.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

Low

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2018-08-18 CVE Reserved
2018-12-26 CVE Published
2024-08-05 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-415: Double Free
CWE-416: Use After Free

CAPEC

References (16)

URL	Tag	Source
https://blog.qt.io/blog/2018/12/04/qt-5-11-3-released-important-security-updates	Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/01/msg00004.html	Mailing List
https://lists.debian.org/debian-lts-announce/2019/05/msg00014.html	Mailing List
https://lists.debian.org/debian-lts-announce/2020/09/msg00023.html	Mailing List

URL	Date	SRC

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2018-12/msg00066.html	2020-09-28
https://codereview.qt-project.org/#/c/236691	2020-09-28

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00057.html	2020-09-28
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00071.html	2020-09-28
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00073.html	2020-09-28
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00090.html	2020-09-28
https://access.redhat.com/errata/RHSA-2019:2135	2020-09-28
https://access.redhat.com/errata/RHSA-2019:3390	2020-09-28
https://usn.ubuntu.com/4003-1	2020-09-28
https://www.debian.org/security/2019/dsa-4374	2020-09-28
https://access.redhat.com/security/cve/CVE-2018-15518	2020-03-31
https://bugzilla.redhat.com/show_bug.cgi?id=1659000	2020-03-31

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Qt Search vendor "Qt"		Qt Search vendor "Qt" for product "Qt"				>= 5.5.0 < 5.11.3 Search vendor "Qt" for product "Qt" and version " >= 5.5.0 < 5.11.3"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				8.0 Search vendor "Debian" for product "Debian Linux" and version "8.0"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0"		-		Affected
Opensuse Search vendor "Opensuse"		Leap Search vendor "Opensuse" for product "Leap"				42.3 Search vendor "Opensuse" for product "Leap" and version "42.3"		-		Affected