Bug 191201

Summary:	CVE-2006-2271 SCTP ECNE chunk handling DoS
Product:	Red Hat Enterprise Linux 4	Reporter:	Marcel Holtmann <holtmann>
Component:	kernel	Assignee:	Neil Horman <nhorman>
Status:	CLOSED ERRATA	QA Contact:	Brian Brock <bbrock>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	4.0	CC:	davem, jbaron, security-response-team, tgraf
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:	impact=moderate,source=vendorsec,reported=20060509,public=20060508
Fixed In Version:	RHSA-2006-0493	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2006-05-24 09:31:21 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 2006-05-09 18:37:22 UTC

The ECNE chunk handling in Linux SCTP before 2.6.17 allows remote attackers to
cause a denial of service via an unexpected chunk when the session is in CLOSED
state.

This issue hasn't been reproduced with RHEL4, but the vulnerable code is the
same as upstream.

The upstream fix can be found here:

http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=35d63edb1c807bc5317e49592260e84637bc432e

Comment 5 Jason Baron 2006-05-22 19:07:56 UTC

committed in stream U4 build 36.1. A test kernel with this patch is available
from http://people.redhat.com/~jbaron/rhel4/

Comment 7 Red Hat Bugzilla 2006-05-24 09:31:21 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-2006-0493.html