Vulnerability Details CVE-2021-34431
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.004
EPSS Ranking 57.9%
CVSS Severity
CVSS v3 Score 6.5
CVSS v2 Score 4.0
References
Products affected by CVE-2021-34431
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cpe:2.3:a:eclipse:mosquitto:1.6
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cpe:2.3:a:eclipse:mosquitto:1.6.1
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cpe:2.3:a:eclipse:mosquitto:1.6.10
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cpe:2.3:a:eclipse:mosquitto:1.6.11
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cpe:2.3:a:eclipse:mosquitto:1.6.12
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cpe:2.3:a:eclipse:mosquitto:1.6.13
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cpe:2.3:a:eclipse:mosquitto:1.6.14
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cpe:2.3:a:eclipse:mosquitto:1.6.15
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cpe:2.3:a:eclipse:mosquitto:1.6.2
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cpe:2.3:a:eclipse:mosquitto:1.6.3
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cpe:2.3:a:eclipse:mosquitto:1.6.4
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cpe:2.3:a:eclipse:mosquitto:1.6.5
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cpe:2.3:a:eclipse:mosquitto:1.6.6
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cpe:2.3:a:eclipse:mosquitto:1.6.7
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cpe:2.3:a:eclipse:mosquitto:1.6.8
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cpe:2.3:a:eclipse:mosquitto:1.6.9
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cpe:2.3:a:eclipse:mosquitto:2.0.0
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cpe:2.3:a:eclipse:mosquitto:2.0.1
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cpe:2.3:a:eclipse:mosquitto:2.0.10
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cpe:2.3:a:eclipse:mosquitto:2.0.2
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cpe:2.3:a:eclipse:mosquitto:2.0.3
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cpe:2.3:a:eclipse:mosquitto:2.0.4
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cpe:2.3:a:eclipse:mosquitto:2.0.5
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cpe:2.3:a:eclipse:mosquitto:2.0.6
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cpe:2.3:a:eclipse:mosquitto:2.0.7
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cpe:2.3:a:eclipse:mosquitto:2.0.8
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cpe:2.3:a:eclipse:mosquitto:2.0.9