Bug 976562 - (CVE-2013-2206) CVE-2013-2206 kernel: sctp: duplicate cookie handling NULL pointer dereference
CVE-2013-2206 kernel: sctp: duplicate cookie handling NULL pointer dereference
Status: NEW
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
high Severity high
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Assigned To: Red Hat Product Security
impact=important,public=20130313,repo...
: Security
Depends On: 963843 974936 976569 976571
Blocks: 976676
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Reported: 2013-06-20 15:35 EDT by Petr Matousek
Modified: 2016-03-04 06:12 EST (History)
26 users (show)

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Description Petr Matousek 2013-06-20 15:35:51 EDT
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 16:23:32 EDT
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 14:58:55 EDT
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 15:27:56 EDT
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 16:30:39 EDT
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

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