Bug 1007733 (CVE-2013-4343)

Summary:	CVE-2013-4343 Kernel: net: use-after-free TUNSETIFF
Product:	[Other] Security Response	Reporter:	Prasad Pandit <ppandit>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	agordeev, aquini, bhu, dhoward, esammons, fhrbata, gansalmon, iboverma, itamar, jasowang, jbenc, jforbes, jkacur, jkastner, jkurik, jonathan, jross, jrusnack, jwboyer, kernel-maint, kernel-mgr, lgoncalv, lwang, madhu.chinakonda, marcelo.barbosa, matt, mcressma, mst, nobody, ohadlevy, plougher, pmatouse, 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:	2016-01-27 12:57:03 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:	1007739, 1007741, 1007951, 1007952
Bug Blocks:	1007721

Description Prasad Pandit 2013-09-13 08:53:05 UTC

Linux kernel built with the Universal TUN/TAP device driver(CONFIG_TUN) support
is vulnerable to a potential privilege escalation via an use-after-free flaw.
It could occur while doing an ioctl(TUNSETIFF) call.

A privileged(CAP_NET_ADMIN) user/program could use this flaw to crash the
kernel resulting DoS or potentially escalate privileges to gain root access
to a system.

Upstream fix:
-------------
 -> https://lkml.org/lkml/2013/9/11/335

Reference:
----------
 -> http://www.openwall.com/lists/oss-security/2013/09/12/3

Comment 1 Prasad Pandit 2013-09-13 08:55:31 UTC

Statement:

This issue does not affect the versions of the kernel package as shipped with Red Hat Enterprise Linux 5, 6 and Red Hat Enterprise MRG 2.

Comment 3 Prasad Pandit 2013-09-13 08:58:34 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1007741]

Comment 7 Fedora Update System 2013-09-19 02:04:45 UTC

kernel-3.11.1-200.fc19 has been pushed to the Fedora 19 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 8 Fedora Update System 2013-09-23 00:00:30 UTC

kernel-3.10.12-100.fc18 has been pushed to the Fedora 18 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 9 Fedora Update System 2013-09-23 00:36:26 UTC

kernel-3.11.1-300.fc20 has been pushed to the Fedora 20 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 12 errata-xmlrpc 2013-10-31 16:29:40 UTC

This issue has been addressed in following products:

  MRG for RHEL-6 v.2

Via RHSA-2013:1490 https://rhn.redhat.com/errata/RHSA-2013-1490.html

Comment 13 John Kacur 2014-02-06 17:17:29 UTC

Upstream commit 662ca437e714caaab855b12415d6ffd815985bc0