Bug 772867 (CVE-2012-0207)

Summary:	CVE-2012-0207 kernel: igmp: Avoid zero delay when receiving odd mixture of IGMP queries
Product:	[Other] Security Response	Reporter:	Eugene Teo (Security Response) <eteo>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	agordeev, anton, arozansk, bhu, dhoward, fhrbata, jkacur, kernel-mgr, lgoncalv, lwang, plougher, pmatouse, rt-maint, sforsber, vgoyal, vincent, 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:	2013-04-24 07:41:13 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:	772868, 772869, 772870, 772871, 772872, 772873, 781214, 782684
Bug Blocks:	772863

Description Eugene Teo (Security Response) 2012-01-10 07:58:32 UTC

Commit 5b7c84066733c5dfb0e4016d939757b38de189e4 ('ipv4: correct IGMP behavior on v3 query during v2-compatibility mode') added yet another case for query parsing, which can result in max_delay = 0.  Substitute a value of 1, as in the usual v3 case.

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=654876

code added in 2.6.36-rc8.

Upstream commit:
http://git.kernel.org/linus/a8c1f65c79cbbb2f7da782d4c9d15639a9b94b27

Acknowledgements:

Red Hat would like to thank Simon McVittie for reporting this issue.

Comment 3 Eugene Teo (Security Response) 2012-01-10 08:09:35 UTC

Statement:

This issue did not affect the Linux kernel as shipped with Red Hat Enterprise Linux 4 as it did not backport the upstream commit 5b7c8406.

Comment 5 Eugene Teo (Security Response) 2012-01-17 03:53:15 UTC

http://womble.decadent.org.uk/blog/igmp-denial-of-service-in-linux-cve-2012-0207.html

Comment 7 Eugene Teo (Security Response) 2012-01-18 07:10:22 UTC

Created kernel tracking bugs for this issue

Affects: fedora-all [bug 782684]

Comment 10 errata-xmlrpc 2012-02-09 16:42:13 UTC

This issue has been addressed in following products:

  Red Hat Enterprise Linux 5

Via RHSA-2012:0107 https://rhn.redhat.com/errata/RHSA-2012-0107.html

Comment 11 errata-xmlrpc 2012-02-21 05:06:01 UTC

This issue has been addressed in following products:

  RHEV-H, V2V and Agents for RHEL-5

Via RHSA-2012:0168 https://rhn.redhat.com/errata/RHSA-2012-0168.html

Comment 12 errata-xmlrpc 2012-02-23 20:23:59 UTC

This issue has been addressed in following products:

  MRG for RHEL-6 v.2

Via RHSA-2012:0333 https://rhn.redhat.com/errata/RHSA-2012-0333.html

Comment 13 errata-xmlrpc 2012-03-06 18:46:04 UTC

This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2012:0350 https://rhn.redhat.com/errata/RHSA-2012-0350.html

Comment 14 errata-xmlrpc 2012-03-26 15:18:05 UTC

This issue has been addressed in following products:

  RHEV-H and Agents for RHEL-6

Via RHSA-2012:0422 https://rhn.redhat.com/errata/RHSA-2012-0422.html