Bug 1978094 (CVE-2021-28166) - CVE-2021-28166 mosquitto: crafted CONNACK message to the broker leads to null pointer dereference
Summary: CVE-2021-28166 mosquitto: crafted CONNACK message to the broker leads to null...
Keywords:
Status: CLOSED UPSTREAM
Alias: CVE-2021-28166
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1978095 1978096 1978097
Blocks:
TreeView+ depends on / blocked
 
Reported: 2021-07-01 06:53 UTC by Dhananjay Arunesh
Modified: 2021-07-01 10:40 UTC (History)
3 users (show)

Fixed In Version:
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Last Closed: 2021-07-01 10:40:30 UTC
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Description Dhananjay Arunesh 2021-07-01 06:53:15 UTC 
In Eclipse Mosquitto version 2.0.0 to 2.0.9, if an authenticated client that had connected with MQTT v5 sent a crafted CONNACK message to the broker, a NULL pointer dereference would occur.

References:
https://bugs.eclipse.org/bugs/show_bug.cgi?id=572608
Comment 1 Dhananjay Arunesh 2021-07-01 06:53:46 UTC 
Created mosquitto tracking bugs for this issue:

Affects: epel-7 [bug 1978096]
Affects: epel-8 [bug 1978097]
Affects: fedora-all [bug 1978095]
Comment 2 Product Security DevOps Team 2021-07-01 10:40:30 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.
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