Bug 1551753 (CVE-2017-7651)

Summary:	CVE-2017-7651 mosquitto: memory exhaustion through multiple crafted CONNECT packets
Product:	[Other] Security Response	Reporter:	Laura Pardo <lpardo>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	linville, mail, richmattes
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	mosquitto 1.4.15	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2018-05-05 10:20:15 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1551754, 1551755
Bug Blocks:

Description Laura Pardo 2018-03-05 21:45:35 UTC

A flaw was found in mosquitto affecting all versions up to 1.4.14 inclusive. Unauthenticated clients can send a crafted CONNECT packet which causes large amounts of memory use in the broker. If multiple clients do this, an out of memory situation can occur and the system may become unresponsive or the broker will be killed by the operating system.


References:
https://bugzilla.redhat.com/show_bug.cgi?id=1549660
https://mosquitto.org/blog/2018/02/security-advisory-cve-2017-7651-cve-2017-7652/

Upstream Patch:
https://mosquitto.org/files/cve/2017-7651/

Comment 1 Laura Pardo 2018-03-05 21:45:56 UTC

Created mosquitto tracking bugs for this issue:

Affects: fedora-all [bug 1551754]
Affects: epel-7 [bug 1551755]