SB2018042434 - Resource exhaustion in Eclipse Mosquitto
Published: April 24, 2018 Updated: August 3, 2020
Security Bulletin ID
SB2018042434
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Resource exhaustion (CVE-ID: CVE-2017-7651)
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
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.
Remediation
Install update from vendor's website.
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