Bug 1771383 (CVE-2019-14463)

Summary:	CVE-2019-14463 libmodbus: out-of-bounds read in MODBUS_FC_WRITE_MULTIPLE_COILS
Product:	[Other] Security Response	Reporter:	Dhananjay Arunesh <darunesh>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	esandeen, john, stephane.raimbault
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	Libmodbus 3.0.7, Libmodbus 3.1.5	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-11-12 12:51:18 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:	1771384, 1771385
Bug Blocks:

Description Dhananjay Arunesh 2019-11-12 09:35:06 UTC

An issue was discovered in libmodbus before 3.0.7 and 3.1.x before 3.1.5. There is an out-of-bounds read for the MODBUS_FC_WRITE_MULTIPLE_REGISTERS case, aka VD-1301.

Reference:
https://github.com/stephane/libmodbus/commit/5ccdf5ef79d742640355d1132fa9e2abc7fbaefc
https://libmodbus.org/2019/stable-and-development-releases/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HAGHQFJTJCMYHW553OUWJ3YIJR6PJHB7/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PRAQZXGAZY6UGWZ6CD33QEFLL7AWW233/

Comment 1 Dhananjay Arunesh 2019-11-12 09:35:28 UTC

Created libmodbus tracking bugs for this issue:

Affects: epel-all [bug 1771385]
Affects: fedora-all [bug 1771384]

Comment 2 Product Security DevOps Team 2019-11-12 12:51:18 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.