CVE-2017-7651

Publication date 24 April 2018

Last updated 24 July 2024

Ubuntu priority

Cvss 3 Severity Score

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.

From the Ubuntu Security Team

It was discovered that Mosquitto incorrectly handled connections. An attacker could possibly use this issue to cause a denial of service.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
mosquitto	18.04 LTS bionic	Not affected
	17.10 artful	Fixed 1.4.12-1ubuntu0.1
	16.04 LTS xenial	Fixed 1.4.8-1ubuntu0.16.04.3
	14.04 LTS trusty	Fixed 0.15-2+deb7u3ubuntu0.1

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
mosquitto	Upstream: https://mosquitto.org/files/cve/2017-7651/mosquitto-1.4.x_cve-2017-7651.patch

Severity score breakdown

Parameter	Value
Base score	7.5 · High
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H