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Vulnerability Intelligence

CVE-2023-5632 | Mondoo Vulnerability Intelligence

Vulnerability IntelligenceCVE-2023-5632

CVE-2023-5632

HIGH7.5

Unconditionally adding an event to the epoll causes excessive CPU consumption

Published Oct 18, 2023

Modified 1 years ago

Details

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

References

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

https://github.com/eclipse/mosquitto/pull/2053

https://www.cve.org/CVERecord?id=CVE-2023-5632

CVSS Analysis

CVSS v3.1

7.5

Exploitability

Attack Vector

NetworkAV:N

Attack Complexity

LowAC:L

Privileges Required

NonePR:N

User Interaction

NoneUI:N

Scope

Scope

UnchangedS:U

Impact

Confidentiality

NoneC:N

Integrity

NoneI:N

Availability

HighA:H

7.5/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

Other

Ecosystems

Timeline

PublishedOct 18, 2023

ModifiedSep 13, 2024