Bug 1406703 (CVE-2016-10027)

Summary:	CVE-2016-10027 smack: TLS SecurityMode.required bypass via StripTLS attack
Product:	[Other] Security Response	Reporter:	Andrej Nemec <anemec>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	aileenc, alazarot, chazlett, etirelli, gvarsami, java-sig-commits, jcoleman, kconner, kverlaen, ldimaggi, lpetrovi, mbaluch, mwinkler, nwallace, projects.rg, puntogil, rrajasek, rwagner, rzhang, soa-p-jira, tcunning, tkirby
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	smack 4.1.9	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-06-08 03:04:52 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:	1406704
Bug Blocks:	1406706

Description Andrej Nemec 2016-12-21 09:41:57 UTC


A vulnerability in the Smack XMPP library was reported where the security of
the TLS connection is not always enforced. By stripping the "starttls"
feature from the server response with a man-in-the-middle tool, an attacker
can force the client to authenticate in clear text even if the
"SecurityMode.required" TLS setting has been set.

References:

http://seclists.org/oss-sec/2016/q4/716
https://community.igniterealtime.org/blogs/ignite/2016/11/22/smack-security-advisory-2016-11-22

Upstream bug:

https://issues.igniterealtime.org/browse/SMACK-739

Upstream patches:

https://github.com/igniterealtime/Smack/commit/059ee99ba0d5ff7758829acf5a9aeede09ec820b
https://github.com/igniterealtime/Smack/commit/a9d5cd4a611f47123f9561bc5a81a4555fe7cb04

Comment 1 Andrej Nemec 2016-12-21 09:44:12 UTC

Created smack tracking bugs for this issue:

Affects: fedora-all [bug 1406704]

Comment 3 Andrej Nemec 2016-12-23 07:41:10 UTC

CVE assignment:

http://seclists.org/oss-sec/2016/q4/739