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CVE-2023-5632

Good to know:

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Date: October 18, 2023

In Eclipse Mosquito before and including 2.0.5, establishing a connection to the mosquitto server without sending data causes the EPOLLOUT event to be added, which results excessive CPU consumption. This could be used by a malicious actor to perform denial of service type attack. This issue is fixed in 2.0.6

Language: C

Severity Score

Related Resources (5)

https://github.com/eclipse/mosquitto/pull/2053
https://github.com/eclipse/mosquitto/commit/18bad1ff32435e523d7507e9b2ce0010124a8f2d
https://nvd.nist.gov/vuln/detail/CVE-2023-5632
https://security-tracker.debian.org/tracker/CVE-2023-5632
https://www.mend.io/vulnerability-database/CVE-2023-5632

Severity Score

Weakness Type (CWE)

Excessive Iteration

CWE-834

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

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