Bug 916115 (CVE-2013-1773)

Summary:	CVE-2013-1773 kernel: VFAT slab-based buffer overflow
Product:	[Other] Security Response	Reporter:	Prasad Pandit <ppandit>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	agordeev, anton, bhu, davej, dhoward, esammons, fhrbata, fs-maint, gansalmon, iboverma, itamar, jforbes, jkacur, jonathan, jwboyer, kernel-maint, kernel-mgr, lgoncalv, lwang, madhu.chinakonda, mcressma, npajkovs, plougher, pmatouse, rt-maint, rvrbovsk, rwheeler, sforsber, 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:	2013-04-23 20:53:31 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:	916118, 916119, 916120, 916121, 965719, 965720
Bug Blocks:	916136

Description Prasad Pandit 2013-02-27 10:45:33 UTC

Linux kernel built with support to VFAT file system is vulnerable to a buffer
overflow flaw which happens when converting UTF8 character string to UTF16
via function: utf8s_to_utf16s.

A local user able to mount, or with access to, a FAT file system with the "utf8=1" option could use this flaw to crash the system or, potentially, to escalate their privileges.

Upstream fix:
 -> https://git.kernel.org/linus/0720a06a7518c9d0c0125bd5d1f3b6264c55c3dd

Reference:
 -> http://www.openwall.com/lists/oss-security/2013/02/26/5
 -> http://www.exploit-db.com/exploits/23248/

Comment 2 Prasad Pandit 2013-02-27 11:04:48 UTC

Statement:

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

This issue did affect the version of Linux kernel as shipped with Red Hat Enterprise Linux 6 and Red Hat Enterprise MRG 2.

Comment 4 errata-xmlrpc 2013-03-06 19:26:16 UTC

This issue has been addressed in following products:

  MRG for RHEL-6 v.2

Via RHSA-2013:0566 https://rhn.redhat.com/errata/RHSA-2013-0566.html

Comment 5 errata-xmlrpc 2013-04-23 18:27:17 UTC

This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2013:0744 https://rhn.redhat.com/errata/RHSA-2013-0744.html

Comment 7 errata-xmlrpc 2013-06-11 17:40:05 UTC

This issue has been addressed in following products:

  Red Hat Enterprise Linux 6.3 EUS - Server Only

Via RHSA-2013:0928 https://rhn.redhat.com/errata/RHSA-2013-0928.html

Comment 8 errata-xmlrpc 2013-07-09 15:05:42 UTC

This issue has been addressed in following products:

  Red Hat Enterprise Linux 6.2 EUS - Server Only

Via RHSA-2013:1026 https://rhn.redhat.com/errata/RHSA-2013-1026.html