CVE-2021-34431

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Source
https://cve.org/CVERecord?id=CVE-2021-34431
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-34431.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2021-34431
Downstream
Published
2021-07-22T14:15:08.050Z
Modified
2026-04-12T03:28:07.502569Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

In Eclipse Mosquitto version 1.6 to 2.0.10, if an authenticated client that had connected with MQTT v5 sent a crafted CONNECT message to the broker a memory leak would occur, which could be used to provide a DoS attack against the broker.

References

Affected packages

Git / github.com/eclipse-mosquitto/mosquitto

Affected ranges

Type
GIT
Repo
https://github.com/eclipse-mosquitto/mosquitto
Events
Introduced
4555ee79e513d9a6dc5c13d527c56cb2cfdd24d0
Last affected
1a6fdfb6955f8f3b4aae0f3c84c020f045fabe6b
Database specific 
{
    "source": "CPE_FIELD",
    "extracted_events": [
        {
            "introduced": "1.6"
        },
        {
            "last_affected": "2.0.10"
        }
    ],
    "cpe": "cpe:2.3:a:eclipse:mosquitto:*:*:*:*:*:*:*:*"
}

Affected versions

v1.*
v1.6
v1.6.1
v1.6.10
v1.6.11
v1.6.12
v1.6.2
v1.6.3
v1.6.4
v1.6.5
v1.6.6
v1.6.7
v1.6.8
v1.6.9
v2.*
v2.0.0
v2.0.1
v2.0.10
v2.0.2
v2.0.3
v2.0.4
v2.0.5
v2.0.6
v2.0.7
v2.0.8
v2.0.9

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-34431.json"