Bug 1549284 (CVE-2018-7420)

Summary:	CVE-2018-7420 wireshark: Pcapng file parser crash in pcapng.c
Product:	[Other] Security Response	Reporter:	Laura Pardo <lpardo>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	denis, dkholia, huzaifas, lemenkov, mruprich, msehnout, phatina, rvokal
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	wireshark 2.4.5, wireshark 2.2.13	Doc Type:	If docs needed, set a value
Doc Text:	A denial of service flaw was found in the pcapng file parser in Wireshark. A remote network attacker could potentially use this flaw to crash Wireshark by tricking it into processing a crafted packet.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2018-03-16 08:29:13 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:	1549286
Bug Blocks:	1549310

Description Laura Pardo 2018-02-26 21:35:50 UTC

A flaw was found in Wireshark 2.2.0 to 2.2.12 and 2.4.0 to 2.4.4, the pcapng file parser could crash. This was addressed in wiretap/pcapng.c by adding a block-size check for sysdig event blocks. 

External References:

https://www.wireshark.org/security/wnpa-sec-2018-11.html
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=14403

Upstream Patch:

https://code.wireshark.org/review/gitweb?p=wireshark.git;a=commit;h=129e41f9f63885a

Comment 1 Laura Pardo 2018-02-26 21:42:19 UTC

Created wireshark tracking bugs for this issue:

Affects: fedora-all [bug 1549286]