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Bug 174808

Summary:	CVE-2002-2185 IGMP DoS
Product:	Red Hat Enterprise Linux 3	Reporter:	Mark J. Cox <mjc>
Component:	kernel	Assignee:	Thomas Graf <tgraf>
Status:	CLOSED ERRATA	QA Contact:	Brian Brock <bbrock>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	3.0	CC:	davem, petrides, rkhan
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:	public=20020625,impact=moderate
Fixed In Version:	RHSA-2006-0140	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2006-01-19 16:02:38 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 Mark J. Cox 2005-12-02 13:54:46 UTC

+++ This bug was initially created as a clone of Bug #174807 +++

http://www.cs.ucsb.edu/~krishna/igmp_dos/

With IGMP version 1 and 2 it is possible to inject a unicast report to a client
which will make it ignore multicast reports sent later by the router.

The fix is to only accept the report if is was sent to a multicast or unicast
address.  Fix from David Stevens at IBM and will be made upstream shortly.

-- Additional comment from mjc on 2005-12-02 08:53 EST --
Created an attachment (id=121751)
proposed upstream patch

Comment 1 Ernie Petrides 2005-12-02 22:45:36 UTC

*** Bug 174809 has been marked as a duplicate of this bug. ***

Comment 2 Ernie Petrides 2006-01-11 23:37:46 UTC

A fix for this problem has just been committed to the RHEL3 E7
patch pool this evening (in kernel version 2.4.21-37.0.1.EL).

Comment 5 Red Hat Bugzilla 2006-01-19 16:02:39 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-2006-0140.html

Comment 6 Ernie Petrides 2006-01-20 23:37:04 UTC

A fix for this problem has also been committed to the RHEL3 U7
patch pool this evening (in kernel version 2.4.21-39.EL).