CVE-2018-21035

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).

CVSS v3 7.5 HIGH
CVSS v2.0 5.0 MEDIUM

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

5.0^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:N/C:N/I:N/A:P

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
https://bugreports.qt.io/browse/QTBUG-70693	Exploit Third Party Advisory
https://codereview.qt-project.org/c/qt/qtwebsockets/+/284735	Patch Third Party Advisory
https://bugreports.qt.io/browse/QTBUG-70693	Exploit Third Party Advisory
https://codereview.qt-project.org/c/qt/qtwebsockets/+/284735	Patch Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:qt:qt:*:*:*:*:*:*:*:*

History

21 Nov 2024, 04:02

Type	Values Removed	Values Added
References	~~() https://bugreports.qt.io/browse/QTBUG-70693 - Exploit, Third Party Advisory~~	() https://bugreports.qt.io/browse/QTBUG-70693 - Exploit, Third Party Advisory
References	~~() https://codereview.qt-project.org/c/qt/qtwebsockets/+/284735 - Patch, Third Party Advisory~~	() https://codereview.qt-project.org/c/qt/qtwebsockets/+/284735 - Patch, Third Party Advisory

Information

Published : 2020-02-28 21:15

Updated : 2024-11-21 04:02

NVD link : CVE-2018-21035

Mitre link : CVE-2018-21035

CVE.ORG link : CVE-2018-21035

JSON object : View

Products Affected

qt

qt

CWE

CWE-770

Allocation of Resources Without Limits or Throttling

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