Bug 1062356 (CVE-2014-1874)

Summary:	CVE-2014-1874 Kernel: SELinux: local denial-of-service
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, 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, nobody, npajkovs, 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:	2014-06-23 06:50:35 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:	1062502, 1062503, 1062504, 1062505, 1062506, 1062507, 1064545, 1064548
Bug Blocks:	1062124

Description Prasad Pandit 2014-02-06 17:39:07 UTC

Linux kernel built with the NSA SELinux Support(CONFIG_SECURITY_SELINUX) is
vulnerable to a crash caused by an empty SELinux security context value. If a
file has an empty security context, listing it via 'ls(1)' could trigger this
crash. Only user/processes with CAP_MAC_ADMIN privileges are allowed to set
the SELinux security context of a file.

A user/process with CAP_MAC_ADMIN privileges could use this flaw to crash the
kernel, resulting in a DoS.

Upstream fix:
-------------
  -> http://marc.info/?l=selinux&m=139110025203759&w=2

Comment 1 Prasad Pandit 2014-02-06 17:48:52 UTC

Statement:

This issue does not affect the version of the kernel package as shipped with Red Hat Enterprise Linux 5.

Comment 2 Murray McAllister 2014-02-07 06:02:16 UTC

This issue was assigned CVE-2014-1874: http://seclists.org/oss-sec/2014/q1/273

Comment 5 Prasad Pandit 2014-02-07 06:16:21 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1062507]

Comment 6 John Kacur 2014-02-11 07:44:07 UTC

commit 2172fa709ab32ca60e86179dc67d0857be8e2c98 upstream

Comment 7 Fedora Update System 2014-02-17 21:05:37 UTC

kernel-3.13.3-201.fc20 has been pushed to the Fedora 20 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 8 errata-xmlrpc 2014-04-28 16:55:45 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

Comment 9 errata-xmlrpc 2014-06-19 17:52:51 UTC

This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2014:0771 https://rhn.redhat.com/errata/RHSA-2014-0771.html