Bug 2244840 (CVE-2023-5632) - CVE-2023-5632 Mosquitto: Possible Denial of Service due to excessive CPE consumption
Summary: CVE-2023-5632 Mosquitto: Possible Denial of Service due to excessive CPE cons...
Keywords:
Status: NEW
Alias: CVE-2023-5632
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2244841
Blocks: 2244839
TreeView+ depends on / blocked
 
Reported: 2023-10-18 13:50 UTC by Marco Benatto
Modified: 2024-04-30 23:00 UTC (History)
22 users (show)

Fixed In Version: mosquitto 2.0.6
Clone Of:
Environment:
Last Closed:
Embargoed:

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Description Marco Benatto 2023-10-18 13:50:45 UTC 
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

https://github.com/eclipse/mosquitto/pull/2053
https://github.com/eclipse/mosquitto/commit/18bad1ff32435e523d7507e9b2ce0010124a8f2d
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