CVE-2019-18281 Information

Description

An out-of-bounds memory access in the generateDirectionalRuns() function in qtextengine.cpp in Qt qtbase 5.11.x and 5.12.x before 5.12.5 allows attackers to cause a denial of service by crashing an application via a text file containing many directional characters.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

Reference

https://bugreports.qt.io/browse/QTBUG-77819 https://bugs.launchpad.net/ubuntu/+source/qtbase-opensource-src/+bug/1848784 https://codereview.qt-project.org/c/qt/qtbase/+/271889 https://seclists.org/bugtraq/2019/Nov/4 https://security.gentoo.org/glsa/202003-60 https://usn.ubuntu.com/4275-1/ https://www.debian.org/security/2019/dsa-4556

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

LOW

Base Severity

4.3