Bug 1058748 (CVE-2014-1690)

Summary:	CVE-2014-1690 Kernel: netfilter: nf_nat: leakage of uninitialized buffer in IRC NAT helper
Product:	[Other] Security Response	Reporter:	Prasad Pandit <ppandit>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	agordeev, anton, aquini, bhu, davej, dhoward, esammons, fhrbata, gansalmon, iboverma, itamar, jforbes, jkacur, jkurik, jonathan, jross, jwboyer, kernel-maint, kernel-mgr, lgoncalv, lwang, madhu.chinakonda, matt, mcressma, pholasek, plougher, rt-maint, rvrbovsk, williams
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2014-04-28 17:35:44 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:	1058782, 1058783, 1058784, 1058786
Bug Blocks:	1053179

Description Prasad Pandit 2014-01-28 13:23:24 UTC

Linux kernel built with the NetFilter Connection Tracking(NF_CONNTRACK)
support for IRC protocol(NF_NAT_IRC), is vulnerable to an information leakage
flaw. It could occur when communicating over direct client-to-client IRC
connection(/dcc) via a NAT-ed network. Kernel attempts to mangle IRC TCP
packet's content, wherein an uninitialised 'buffer' object is copied to a
socket buffer and sent over to the other end of a connection.

A user/program could use this flaw to leak kernel memory bytes.

Upstream fix:
-------------
  -> https://git.kernel.org/linus/2690d97ade05c5325cbf7c72b94b90d265659886

Comment 1 Prasad Pandit 2014-01-28 13:27:28 UTC

Statement:

This issue does not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 5 and Red Hat Enterprise Linux 6.

Comment 2 Prasad Pandit 2014-01-28 14:05:12 UTC

Acknowledgement:

This issue was discovered by Daniel Borkmann of Red Hat Inc.

Comment 5 Prasad Pandit 2014-01-28 14:18:45 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1058786]

Comment 6 errata-xmlrpc 2014-04-28 16:53:56 UTC

This issue has been addressed in following products:

  MRG for RHEL-6 v.2

Via RHSA-2014:0439 https://rhn.redhat.com/errata/RHSA-2014-0439.html