Vulnerability CVE-2018-21035
Published: 2020-02-28   Modified: 2020-02-29

Description:
In Qt through 5.14.1, the WebSocket implementation accepts up to 2GB for frames and 2GB for messages. Smaller limits cannot be configured. This makes it easier for attackers to cause a denial of service (memory consumption).

Type:

CWE-400

 (Uncontrolled Resource Consumption ('Resource Exhaustion'))

CVSS2 => (AV:N/AC:L/Au:N/C:N/I:N/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
QT -> QT 

 References:
https://bugreports.qt.io/browse/QTBUG-70693
https://codereview.qt-project.org/c/qt/qtwebsockets/+/284735
Copyright 2024, cxsecurity.com

 

Back to Top