Vulnerability in Eclipse Mosquitto
CVE-2023-5632
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
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.007 (51.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 51.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
- Eclipse Mosquitto — versions 2.0.5, 0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/eclipse/mosquitto/pull/2053 (issue-tracking, patch, Issue Tracking)
- github.com/eclipse/mosquitto/commit/18bad1ff32435e523d7507e9b2ce0010124a8f2d (Patch, patch)
Frequently asked questions
- What is CVE-2023-5632?
- CVE-2023-5632 is a high-severity vulnerability in Eclipse Mosquitto, classified under Excessive Iteration. CVSS score: 7.5/10. Published 2023-10-18.
- How severe is CVE-2023-5632?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2023-5632 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.