Bug 1753846 (CVE-2019-11779)

Summary: CVE-2019-11779 mosquitto: malicious MQTT sends SUBSCRIBE packet leads to stack over flow
Product: [Other] Security Response Reporter: Dhananjay Arunesh <darunesh>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED UPSTREAM QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: linville, mail, richmattes
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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Last Closed: 2019-09-20 06:45:39 UTC Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Bug Depends On: 1753847, 1753848    
Bug Blocks:    

Description Dhananjay Arunesh 2019-09-20 04:54:20 UTC
In Eclipse Mosquitto 1.5.0 to 1.6.5 inclusive, if a malicious MQTT client sends a SUBSCRIBE packet containing a topic that consists of approximately 65400 or more '/' characters, i.e. the topic hierarchy separator, then a stack overflow will occur.

Reference:
https://bugs.eclipse.org/bugs/show_bug.cgi?id=551160

Comment 1 Dhananjay Arunesh 2019-09-20 04:54:37 UTC
Created mosquitto tracking bugs for this issue:

Affects: epel-7 [bug 1753848]
Affects: fedora-all [bug 1753847]

Comment 2 Product Security DevOps Team 2019-09-20 06:45:39 UTC
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.