UBUNTU-CVE-2018-21035

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Source

https://ubuntu.com/security/CVE-2018-21035

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-21035.json

JSON Data

https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2018-21035

Upstream

CVE-2018-21035

Published

2020-02-28T21:15:00Z

Modified

2025-10-24T04:47:19Z

Severity

8.6 (High) CVSS_V3 - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H CVSS Calculator
7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Ubuntu - low

Summary

[none]

Details

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).

References

Affected packages

Ubuntu:16.04:LTS / qtwebsockets-opensource-src

Package

Name: qtwebsockets-opensource-src
Purl: pkg:deb/ubuntu/qtwebsockets-opensource-src@5.5.1-4build1?arch=source&distro=xenial

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

5.*

5.4.2-2build1

5.5.1-4build1

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "5.5.1-4build1",
            "binary_name": "libqt5websockets5"
        },
        {
            "binary_version": "5.5.1-4build1",
            "binary_name": "libqt5websockets5-dev"
        },
        {
            "binary_version": "5.5.1-4build1",
            "binary_name": "qml-module-qt-websockets"
        },
        {
            "binary_version": "5.5.1-4build1",
            "binary_name": "qml-module-qtwebsockets"
        },
        {
            "binary_version": "5.5.1-4build1",
            "binary_name": "qtwebsockets5-doc-html"
        },
        {
            "binary_version": "5.5.1-4build1",
            "binary_name": "qtwebsockets5-examples"
        }
    ]
}

Ubuntu:18.04:LTS / qtwebsockets-opensource-src

Package

Name: qtwebsockets-opensource-src
Purl: pkg:deb/ubuntu/qtwebsockets-opensource-src@5.9.5-0ubuntu1?arch=source&distro=bionic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

5.*

5.9.1-3

5.9.2-3build1

5.9.3-0ubuntu1

5.9.4-0ubuntu1

5.9.5-0ubuntu1

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "5.9.5-0ubuntu1",
            "binary_name": "libqt5websockets5"
        },
        {
            "binary_version": "5.9.5-0ubuntu1",
            "binary_name": "libqt5websockets5-dev"
        },
        {
            "binary_version": "5.9.5-0ubuntu1",
            "binary_name": "qml-module-qt-websockets"
        },
        {
            "binary_version": "5.9.5-0ubuntu1",
            "binary_name": "qml-module-qtwebsockets"
        },
        {
            "binary_version": "5.9.5-0ubuntu1",
            "binary_name": "qtwebsockets5-doc-html"
        },
        {
            "binary_version": "5.9.5-0ubuntu1",
            "binary_name": "qtwebsockets5-examples"
        }
    ]
}

Ubuntu:20.04:LTS / qtwebsockets-opensource-src

Package

Name: qtwebsockets-opensource-src
Purl: pkg:deb/ubuntu/qtwebsockets-opensource-src@5.12.8-0ubuntu1?arch=source&distro=focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

5.*

5.12.4-1

5.12.5-2

5.12.5-2build1

5.12.8-0ubuntu1

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "5.12.8-0ubuntu1",
            "binary_name": "libqt5websockets5"
        },
        {
            "binary_version": "5.12.8-0ubuntu1",
            "binary_name": "libqt5websockets5-dev"
        },
        {
            "binary_version": "5.12.8-0ubuntu1",
            "binary_name": "qml-module-qt-websockets"
        },
        {
            "binary_version": "5.12.8-0ubuntu1",
            "binary_name": "qml-module-qtwebsockets"
        },
        {
            "binary_version": "5.12.8-0ubuntu1",
            "binary_name": "qtwebsockets5-doc-html"
        },
        {
            "binary_version": "5.12.8-0ubuntu1",
            "binary_name": "qtwebsockets5-examples"
        }
    ]
}