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VULNERABILITIES

CVE-2018-21035 Details

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).

Metrics

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://bugreports.qt.io/browse/QTBUG-70693 CVEExploitThird Party Advisory
https://codereview.qt-project.org/c/qt/qtwebsockets/+/284735 CVEPatchThird Party Advisory
https://bugreports.qt.io/browse/QTBUG-70693 [email protected]ExploitThird Party Advisory
https://codereview.qt-project.org/c/qt/qtwebsockets/+/284735 [email protected]PatchThird Party Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-770Allocation of Resources Without Limits or Throttling[email protected]

Affected Products

ProductVersions
qt qt
<= 5.14.1

CPE

  • cpe:2.3:a:qt:qt:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

5 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2018-21035
NVD Published Date:
Feb 28, 2020
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2018-21035 Details - Not Deferred