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.

CVSS v3.0 8.1 HIGH
CVSS v2.0 6.8 MEDIUM

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CVSS v3.0 : HIGH

V3 Legend

Vector : AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitability : 2.2 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

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CVSS v2.0 : MEDIUM

V2 Legend

Vector : AV:N/AC:M/Au:N/C:P/I:P/A:P

Exploitability : 8.6 / Impact : 6.4

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://bugs.eclipse.org/bugs/show_bug.cgi?id=543401	Exploit Issue Tracking Vendor Advisory
https://lists.debian.org/debian-lts-announce/2019/10/msg00035.html

Configurations

Configuration 1 (hide)

cpe:2.3:a:eclipse:mosquitto:*:*:*:*:*:*:*:*

Information

Published : 2019-03-27 11:29

Updated : 2019-10-09 16:34

NVD link : CVE-2018-12551

Mitre link : CVE-2018-12551

JSON object : View

CWE

CWE-287

Improper Authentication

Products Affected

eclipse

mosquitto

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