Your submission was sent successfully! Close

You have successfully unsubscribed! Close

Thank you for signing up for our newsletter!
In these regular emails you will find the latest updates about Ubuntu and upcoming events where you can meet our team.Close

CVE-2023-28366

Publication date 1 September 2023

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

7.5 · High

Score breakdown

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.

Read the notes from the security team

Status

Package Ubuntu Release Status
mosquitto 23.10 mantic
Not affected
23.04 lunar
Fixed 2.0.11-1.2ubuntu0.1
22.04 LTS jammy
Fixed 2.0.11-1ubuntu1.1
20.04 LTS focal
18.04 LTS bionic Ignored
16.04 LTS xenial Ignored
14.04 LTS trusty
Not affected

Get expanded security coverage with Ubuntu Pro

Reduce your average CVE exposure time from 98 days to 1 day with expanded CVE patching, ten-years security maintenance and optional support for the full stack of open-source applications. Free for personal use.

Get Ubuntu Pro

Notes

gianz

Memory leak requiring refactoring of core functions to be fixed. Applying the patches to versions < 2.0.0 is likely to cause regressions.

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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H