Bug 976562 (CVE-2013-2206)

Summary:	CVE-2013-2206 kernel: sctp: duplicate cookie handling NULL pointer dereference
Product:	[Other] Security Response	Reporter:	Petr Matousek <pmatouse>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	bhu, dhoward, fhrbata, gansalmon, iboverma, itamar, jforbes, jkacur, jonathan, jross, jwboyer, kernel-maint, kernel-mgr, lgoncalv, madhu.chinakonda, mcressma, nobody, rkhan, rt-maint, rvrbovsk, 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:	2021-10-20 10:39:36 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:	963843, 974936, 976569, 976571
Bug Blocks:	976676

Description Petr Matousek 2013-06-20 19:35:51 UTC

A flaw was found in the way Linux kernel's SCTP network protocol implementation handled duplicate cookies. A transient empty association is created while processing the duplicate cookie chunk that userspace could query, potentially leading to NULL pointer dereference. A remote attacker able to initiate SCTP connection to the system could use this flaw to create transient conditions that could lead to remote system crash if remote system user is querying SCTP connection info at the time these conditions exist.

Upstream fix:
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f2815633504b442ca0b0605c16bf3d88a3a0fcea

Comment 2 Petr Matousek 2013-06-20 20:23:32 UTC

Statement:

This issue does affect Linux kernel packages as shipped with Red Hat Enterprise Linux 5 and 6.

This issue does not affect Linux kernel packages as shipped with Red Hat Enterprise MRG 2 as they already contain the fix.

Comment 3 errata-xmlrpc 2013-08-20 18:58:55 UTC

This issue has been addressed in following products:

  Red Hat Enterprise Linux 5

Via RHSA-2013:1166 https://rhn.redhat.com/errata/RHSA-2013-1166.html

Comment 4 errata-xmlrpc 2013-08-27 19:27:56 UTC

This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2013:1173 https://rhn.redhat.com/errata/RHSA-2013-1173.html

Comment 5 errata-xmlrpc 2013-09-03 20:30:39 UTC

This issue has been addressed in following products:

  OpenStack 3 for RHEL 6

Via RHSA-2013:1195 https://rhn.redhat.com/errata/RHSA-2013-1195.html