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Bug 217030

Summary:	CVE-2006-6053 ext3fs_dirhash denial of service
Product:	Red Hat Enterprise Linux 4	Reporter:	Marcel Holtmann <holtmann>
Component:	kernel	Assignee:	Eric Sandeen <esandeen>
Status:	CLOSED ERRATA	QA Contact:	Brian Brock <bbrock>
Severity:	low	Docs Contact:
Priority:	medium
Version:	4.0	CC:	jbaron, security-response-team
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:	impact=low,source=internet,reported=20061110,public=20061110
Fixed In Version:	RHSA-2007-0014	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2007-01-30 14:44:17 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:

Description Marcel Holtmann 2006-11-23 09:06:13 UTC

From MOKB-10-11-2006:

http://projects.info-pull.com/mokb/MOKB-10-11-2006.html

The ext3 filesystem code fails to properly handle corrupted data structures,
leading to an exploitable denial of service issue with potential fs corruption,
when a read operation is done on a crafted ext3 stream.

Comment 1 Eric Sandeen 2006-11-30 18:21:27 UTC

FWIW, this one is already fixed in RHEL5 (via bug 209907).  Marcel, what about
RHEL3?

Patch posted for RHEL4 on 11/30/06

Comment 2 Marcel Holtmann 2006-12-04 08:21:49 UTC

Testing with Red Hat Enterprise Linux 2.1 and 3 showed that both kernels are not
vulnerable to this specific issue.

Comment 3 Jason Baron 2006-12-11 22:44:14 UTC

committed in stream U5 build 42.28. A test kernel with this patch is available
from http://people.redhat.com/~jbaron/rhel4/

Comment 4 Jason Baron 2006-12-18 21:48:33 UTC

committed in stream E5 build 42.0.4

Comment 6 Mike Gahagan 2007-01-19 16:47:17 UTC

Bug and fix verified with the MOKB image using -42 and -42.0.7.

Comment 8 Red Hat Bugzilla 2007-01-30 14:44:17 UTC

An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHSA-2007-0014.html