Bug 1666277 (CVE-2019-5721)

Summary:	CVE-2019-5721 wireshark: use-after-free in ENIP dissector results in denial of service
Product:	[Other] Security Response	Reporter:	msiddiqu
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	Keywords:	Security
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	wireshark 2.4.12	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-01-15 11:48:11 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:

Description msiddiqu 2019-01-15 11:44:39 UTC

In Wireshark 2.4.0 to 2.4.11, the ENIP dissector could crash. This was addressed in epan/dissectors/packet-enip.c by changing the memory-management approach so that a use-after-free is avoided. 

Upstream issue:
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=14470  

Upstream patch:
https://code.wireshark.org/review/gitweb?p=wireshark.git;a=commit;h=1c66174ec7aa19e2ddc79178cf59f15a654fc4fe

Comment 1 msiddiqu 2019-01-15 11:44:42 UTC

External References:

https://www.wireshark.org/security/wnpa-sec-2019-05.html

Comment 2 msiddiqu 2019-02-05 06:12:43 UTC

Statement:

This issue did not affect the versions of wireshark as shipped with Red Hat Enterprise Linux 5, 6, and 7.