Vulnerability Details CVE-2018-12551
When Eclipse Mosquitto version 1.0 to 1.5.5 (inclusive) is configured to use a password file for authentication, any malformed data in the password file will be treated as valid. This typically means that the malformed data becomes a username and no password. If this occurs, clients can circumvent authentication and get access to the broker by using the malformed username. In particular, a blank line will be treated as a valid empty username. Other security measures are unaffected. Users who have only used the mosquitto_passwd utility to create and modify their password files are unaffected by this vulnerability.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.005
EPSS Ranking 66.5%
CVSS Severity
CVSS v3 Score 8.1
CVSS v2 Score 6.8
References
Products affected by CVE-2018-12551
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cpe:2.3:a:eclipse:mosquitto:1.0
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cpe:2.3:a:eclipse:mosquitto:1.0.1
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cpe:2.3:a:eclipse:mosquitto:1.0.2
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cpe:2.3:a:eclipse:mosquitto:1.0.3
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cpe:2.3:a:eclipse:mosquitto:1.0.4
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cpe:2.3:a:eclipse:mosquitto:1.0.5
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cpe:2.3:a:eclipse:mosquitto:1.1
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cpe:2.3:a:eclipse:mosquitto:1.1.1
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cpe:2.3:a:eclipse:mosquitto:1.1.2
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cpe:2.3:a:eclipse:mosquitto:1.1.3
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cpe:2.3:a:eclipse:mosquitto:1.1.90
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cpe:2.3:a:eclipse:mosquitto:1.2
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cpe:2.3:a:eclipse:mosquitto:1.2.1
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cpe:2.3:a:eclipse:mosquitto:1.2.2
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cpe:2.3:a:eclipse:mosquitto:1.2.3
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cpe:2.3:a:eclipse:mosquitto:1.3
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cpe:2.3:a:eclipse:mosquitto:1.3.1
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cpe:2.3:a:eclipse:mosquitto:1.3.2
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cpe:2.3:a:eclipse:mosquitto:1.3.3
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cpe:2.3:a:eclipse:mosquitto:1.3.4
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cpe:2.3:a:eclipse:mosquitto:1.3.5
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cpe:2.3:a:eclipse:mosquitto:1.4
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cpe:2.3:a:eclipse:mosquitto:1.4.1
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cpe:2.3:a:eclipse:mosquitto:1.4.10
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cpe:2.3:a:eclipse:mosquitto:1.4.11
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cpe:2.3:a:eclipse:mosquitto:1.4.12
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cpe:2.3:a:eclipse:mosquitto:1.4.13
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cpe:2.3:a:eclipse:mosquitto:1.4.14
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cpe:2.3:a:eclipse:mosquitto:1.4.15
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cpe:2.3:a:eclipse:mosquitto:1.4.2
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cpe:2.3:a:eclipse:mosquitto:1.4.3
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cpe:2.3:a:eclipse:mosquitto:1.4.4
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cpe:2.3:a:eclipse:mosquitto:1.4.5
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cpe:2.3:a:eclipse:mosquitto:1.4.6
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cpe:2.3:a:eclipse:mosquitto:1.4.7
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cpe:2.3:a:eclipse:mosquitto:1.4.8
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cpe:2.3:a:eclipse:mosquitto:1.4.9
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cpe:2.3:a:eclipse:mosquitto:1.5
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cpe:2.3:a:eclipse:mosquitto:1.5.1
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cpe:2.3:a:eclipse:mosquitto:1.5.2
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cpe:2.3:a:eclipse:mosquitto:1.5.3
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cpe:2.3:a:eclipse:mosquitto:1.5.4
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cpe:2.3:a:eclipse:mosquitto:1.5.5