Bug 2279796 (CVE-2024-34244)

Summary:	CVE-2024-34244 libmodbus: heap buffer overread
Product:	[Other] Security Response	Reporter:	Zack Miele <zmiele>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	Keywords:	Security
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Hardware:	All
OS:	Linux
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
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Bug Depends On:	2279797, 2279798, 2279799, 2279800
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Description Zack Miele 2024-05-08 20:56:36 UTC

libmodbus v3.1.10 is vulnerable to Buffer Overflow via the modbus_write_bits function. This issue can be triggered when the function is fed with specially crafted input, which leads to out-of-bounds read and can potentially cause a crash or other unintended behaviors.

https://github.com/stephane/libmodbus/issues/743

Comment 1 Zack Miele 2024-05-08 20:56:59 UTC

Created libmodbus tracking bugs for this issue:

Affects: epel-all [bug 2279797]
Affects: fedora-38 [bug 2279798]
Affects: fedora-39 [bug 2279799]
Affects: fedora-40 [bug 2279800]