CVE-2019-18281: Buffer Overflow
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.
Affected Software
Remediation
Patch Available
Event History
Frequently Asked Questions
What is the vulnerability ID for this issue?
The vulnerability ID for this issue is CVE-2019-18281.
What is the severity of CVE-2019-18281?
The severity of CVE-2019-18281 is medium.
Which versions of Qt are affected by CVE-2019-18281?
Qt qtbase 5.11.x and 5.12.x versions before 5.12.5 are affected by CVE-2019-18281.
How can an attacker exploit CVE-2019-18281?
An attacker can exploit CVE-2019-18281 by crashing an application via a text file containing many directional characters.
Where can I find more information about CVE-2019-18281?
You can find more information about CVE-2019-18281 at the following references: [Bugreports Qt](https://bugreports.qt.io/browse/QTBUG-77819), [Launchpad](https://bugs.launchpad.net/ubuntu/+source/qtbase-opensource-src/+bug/1848784), [Codereview Qt](https://codereview.qt-project.org/c/qt/qtbase/+/271889)