Bug 920783 (CVE-2013-1848)

Summary:	CVE-2013-1848 kernel: ext3: format string issues
Product:	[Other] Security Response	Reporter:	Petr Matousek <pmatouse>
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, bhu, dhoward, esammons, fhrbata, iboverma, jkacur, kernel-mgr, lgoncalv, lwang, mcressma, npajkovs, security-response-team, 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:	2013-08-24 13:24:39 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:	920784, 920785, 920786, 920787, 965715, 965716
Bug Blocks:	920790

Description Petr Matousek 2013-03-12 17:57:49 UTC

ext3_msg() takes the printk prefix as the second parameter and the format string as the third parameter. Two callers of ext3_msg omit the prefix and pass the format string as the second parameter and the first parameter to the format string as the third parameter. In both cases this string comes from an arbitrary source.

An user able to mount ext3 filesystems could use this flaw to crash the system or, potentially, increase their privileges.

Upstream fix:
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8d0c2d10dd72c5292eda7a06231056a4c972e4cc

Comment 1 Petr Matousek 2013-03-12 17:59:51 UTC

Statement:

This issue did not affect the versions of the kernel package as shipped with Red Hat Enterprise Linux 5 because it did not backport the commit 4cf46b67eb that introduced this issue.

This issue affects the version of Linux kernel as shipped with Red Hat Enterprise Linux 6 and Red Hat Enterprise MRG 2. Future kernel updates for Red Hat Enterprise Linux 6 and Red Hat Enterprise MRG 2 may address this issue.

Comment 4 errata-xmlrpc 2013-05-20 16:52:00 UTC

This issue has been addressed in following products:

  MRG for RHEL-6 v.2

Via RHSA-2013:0829 https://rhn.redhat.com/errata/RHSA-2013-0829.html

Comment 6 errata-xmlrpc 2013-06-11 17:41:06 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 7 errata-xmlrpc 2013-07-09 15:06:55 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

Comment 8 errata-xmlrpc 2013-07-16 17:28:13 UTC

This issue has been addressed in following products:

  OpenStack 3 for RHEL 6

Via RHSA-2013:1080 https://rhn.redhat.com/errata/RHSA-2013-1080.html

Comment 9 errata-xmlrpc 2013-07-16 18:24:41 UTC

This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2013:1051 https://rhn.redhat.com/errata/RHSA-2013-1051.html