Bug 2284259 (CVE-2024-36845)

Summary:	CVE-2024-36845 libmodbus: denial of service
Product:	[Other] Security Response	Reporter:	ybuenos
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	esandeen
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
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Fixed In Version:		Doc Type:	If docs needed, set a value
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Clone Of:		Environment:
Last Closed:	2024-07-17 16:23:44 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2284260, 2284261
Bug Blocks:

Description ybuenos 2024-06-02 14:16:17 UTC

An invalid pointer in the modbus_receive() function of libmodbus v3.1.6 allows attackers to cause a Denial of Service (DoS) via a crafted message sent to the unit-test-server.

https://github.com/stephane/libmodbus/issues/750

Comment 1 ybuenos 2024-06-02 14:16:37 UTC

Created libmodbus tracking bugs for this issue:

Affects: epel-all [bug 2284260]
Affects: fedora-all [bug 2284261]

Comment 2 Eric Sandeen 2024-07-17 16:23:44 UTC

This is a duplicate of CVE-2024-36843 (and of bug #2284252), see discussion in https://github.com/stephane/libmodbus/issues/750.

The flaw is fixed in version 3.1.7 which is already present in all supported distributions, so closing NOTABUG.