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Bug 174807

Summary: CVE-2002-2185 IGMP DoS
Product: Red Hat Enterprise Linux 4 Reporter: Mark J. Cox <mjc>
Component: kernelAssignee: Thomas Graf <tgraf>
Status: CLOSED ERRATA QA Contact: Brian Brock <bbrock>
Severity: medium Docs Contact:
Priority: medium    
Version: 4.0CC: jbaron, rkhan
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard: public=20020625,impact=moderate
Fixed In Version: RHSA-2006-0101 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2006-01-17 08:36:39 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:    
Bug Blocks: 168430    
Attachments:
Description Flags
proposed upstream patch none

Description Mark J. Cox 2005-12-02 13:53:37 UTC 
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.
Comment 1 Mark J. Cox 2005-12-02 13:53:37 UTC 
Created attachment 121751 [details]
proposed upstream patch
Comment 6 Red Hat Bugzilla 2006-01-17 08:36:39 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-2006-0101.html
Comment 7 John Poelstra 2006-01-17 16:57:38 UTC 
All in attendance at 12-JAN-06 RHEL meeting approved for MUSTFIX list for RHEL4-U3