Bug 1796459 (CVE-2020-7044)

Summary:	CVE-2020-7044 wireshark: WASSP dissector crash (wnpa-sec-2020-01)
Product:	[Other] Security Response	Reporter:	Guilherme de Almeida Suckevicz <gsuckevi>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	denis, huzaifas, lemenkov, mruprich, msehnout, phatina, rvokal, sergey.avseyev
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	wireshark 3.2.1	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-02-11 14:09:40 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:	1796460
Bug Blocks:	1796462

Description Guilherme de Almeida Suckevicz 2020-01-30 13:31:32 UTC

In Wireshark 3.2.x before 3.2.1, the WASSP dissector could crash. This was addressed in epan/dissectors/packet-wassp.c by using >= and <= to resolve off-by-one errors.

References:
https://www.wireshark.org/security/wnpa-sec-2020-01.html
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=16324

Upstream commit:
https://code.wireshark.org/review/gitweb?p=wireshark.git;a=commit;h=f90a3720b73ca140403315126e2a478c4f70ca03

Comment 1 Guilherme de Almeida Suckevicz 2020-01-30 13:31:47 UTC

Created wireshark tracking bugs for this issue:

Affects: fedora-all [bug 1796460]

Comment 2 Riccardo Schirone 2020-02-11 09:56:09 UTC

The vulnerable code was added in https://code.wireshark.org/review/gitweb?p=wireshark.git;a=commit;h=c7854720c805ad3b96c1ceecff3be547f5748830, which extends the WASSP dissector. The commit first appeared in wireshark v3.1.0.

Comment 3 Riccardo Schirone 2020-02-11 09:57:44 UTC

Statement:

This issue did not affect the versions of wireshark as shipped with Red Hat Enterprise Linux 7, and 8 as they did not include the vulnerable code.

Comment 4 Product Security DevOps Team 2020-02-11 14:09:40 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2020-7044