Vulnerability in Eclipse Mosquitto
CVE-2023-28366
The broker in Eclipse Mosquitto 1.3.2 through 2.x before 2.0.16 has a memory leak that can be abused remotely when a client sends many QoS 2 messages with duplicate message IDs, and fails to respond to PUBREC commands. This occurs because of mishandling of EAGAIN from the libc send function.
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: 0.013 (69.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 70th percentile — 69.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/eclipse/mosquitto/compare/v2.0.15...v2.0.16 (Release Notes)
- www.compass-security.com/fileadmin/Research/Advisories/2023_02_CSNC-2023-001_Ec… (Third Party Advisory)
- mosquitto.org/blog/2023/08/version-2-0-16-released/ (Release Notes)
- github.com/eclipse/mosquitto/commit/6113eac95a9df634fbc858be542c4a0456bfe7b9 (Patch)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- www.debian.org/security/2023/dsa-5511 (vendor-advisory)
- security.gentoo.org/glsa/202401-09 (vendor-advisory)
Frequently asked questions
- What is CVE-2023-28366?
- CVE-2023-28366 is a high-severity vulnerability in Eclipse Mosquitto, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 7.5/10. Published 2023-09-01.
- How severe is CVE-2023-28366?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2023-28366 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.