UBUNTU-CVE-2021-20185

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Source

https://ubuntu.com/security/CVE-2021-20185

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-20185.json

JSON Data

https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2021-20185

Upstream

CVE-2021-20185

Published

2021-01-28T20:15:00Z

Modified

2025-10-24T04:50:04Z

Severity

5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVSS Calculator
Ubuntu - medium

Summary

[none]

Details

It was found in Moodle before version 3.10.1, 3.9.4, 3.8.7 and 3.5.16 that messaging did not impose a character limit when sending messages, which could result in client-side (browser) denial of service for users receiving very large messages.

References

Affected packages

Ubuntu:16.04:LTS / moodle

Package

Name: moodle
Purl: pkg:deb/ubuntu/moodle@3.0.3+dfsg-0ubuntu1?arch=source&distro=xenial

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.7.9+dfsg-1

2.7.10+dfsg-1

2.7.11+dfsg-1

2.7.11+dfsg-2

2.7.12+dfsg-1

3.*

3.0.3+dfsg-0ubuntu1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "moodle",
            "binary_version": "3.0.3+dfsg-0ubuntu1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-20185.json"

Ubuntu:18.04:LTS / moodle