What’s Vulnerable › Vulnerabilities

CVE-2017-7651

• Severity: high (CVSS 7.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 5.1% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2018-04-24 · updated 2026-06-17
• Weakness: CWE-789

Description

In Eclipse Mosquitto 1.4.14, a user can shutdown the Mosquitto server simply by filling the RAM memory with a lot of connections with large payload. This can be done without authentications if occur in connection phase of MQTT protocol.

Affected products

• Debian Linux: 7.0, 8.0, 9.0
• The Eclipse Foundation Eclipse Mosquitto: through 1.4.14

References

• https://bugs.eclipse.org/bugs/show_bug.cgi?id=529754
• https://lists.debian.org/debian-lts-announce/2018/03/msg00037.html
• https://lists.debian.org/debian-lts-announce/2018/06/msg00016.html
• https://mosquitto.org/blog/2018/02/security-advisory-cve-2017-7651-cve-2017-7652/
• https://www.debian.org/security/2018/dsa-4325
• https://bugs.eclipse.org/bugs/show_bug.cgi?id=529754
• https://lists.debian.org/debian-lts-announce/2018/03/msg00037.html
• https://lists.debian.org/debian-lts-announce/2018/06/msg00016.html
• https://mosquitto.org/blog/2018/02/security-advisory-cve-2017-7651-cve-2017-7652/
• https://www.debian.org/security/2018/dsa-4325

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