Bug 1387116

Summary:	openssh: Memory exhaustion issue
Product:	[Other] Security Response	Reporter:	Andrej Nemec <anemec>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED DUPLICATE	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	jjelen, mattias.ellert, mgrepl, plautrba, sardella, tmraz
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2016-10-20 07:21:08 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:	1387117
Bug Blocks:

Description Andrej Nemec 2016-10-20 07:18:59 UTC

A memory exhaustion vulnerability was found in the key exchange process in openssh. An unauthenticated peer could repeat the KEXINIT and cause allocation of up to 384MB for each connection.

Upstream patch:

http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/kex.c?rev=1.127&content-type=text/x-cvsweb-markup

References:

http://seclists.org/oss-sec/2016/q4/185

Upstream does not consider this as a security issue.

Comment 1 Andrej Nemec 2016-10-20 07:20:45 UTC

Created openssh tracking bugs for this issue:

Affects: fedora-all [bug 1387117]

Comment 2 Andrej Nemec 2016-10-21 10:52:07 UTC


*** This bug has been marked as a duplicate of bug 1384860 ***