Bug 1070705 (CVE-2014-0101)

Summary: CVE-2014-0101 kernel: net: sctp: null pointer dereference when processing authenticated cookie_echo chunk
Product: [Other] Security Response Reporter: Petr Matousek <pmatouse>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: NEW --- QA Contact: Xin Long <lxin>
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: agordeev, aquini, bhu, dhoward, esammons, fhrbata, iboverma, jkacur, jkurik, jross, kenneth.j.hall, kernel-mgr, lgoncalv, lwang, lxin, matt, mcressma, nobody, npajkovs, pholasek, redhatbugzilla, rkhan, security-response-team, williams
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard: impact=important,public=20140303,reported=20140226,source=redhat,cvss2=7.1/AV:N/AC:M/Au:N/C:N/I:N/A:C,rhel-5/kernel=notaffected,rhel-6/kernel=affected,rhel-6.4.z/kernel=affected,rhel-6.3.z/kernel=affected,rhel-6.2.z/kernel=affected,mrg-2/realtime-kernel=affected,fedora-all/kernel=affected,rhel-7/kernel=notaffected,cwe=CWE-476[auto]
Fixed In Version: Doc Type: Bug Fix
Doc Text:
A flaw was found in the way the Linux kernel processed an authenticated COOKIE_ECHO chunk during the initialization of an SCTP connection. A remote attacker could use this flaw to crash the system by initiating a specially crafted SCTP handshake in order to trigger a NULL pointer dereference on the system.
Story Points: ---
Clone Of: Environment:
Last Closed: Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---
Bug Depends On: 1067451, 1070715, 1070716, 1071245, 1071246, 1071247, 1072029    
Bug Blocks: 1070824    

Description Petr Matousek 2014-02-27 06:56:59 EST
Description of the problem:

A flaw was found in the way Linux kernel processed authenticated COOKIE_ECHO chunks.

A remote attacker could use this flaw to crash the system by sending a maliciously prepared SCTP handshake in order to trigger a NULL pointer dereference on the server.

Introduced by:
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=bbd0d59809f9

Acknowledgements:

Red Hat would like to thank Nokia Siemens Networks for reporting this issue.
Comment 1 Petr Matousek 2014-02-27 07:04:31 EST
Statement:

This issue did not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 5. Future kernel updates for Red Hat Enterprise MRG 2 may address this issue.
Comment 5 Petr Matousek 2014-03-03 12:05:09 EST
Upstream patch submission:

http://patchwork.ozlabs.org/patch/325898/
Comment 6 Petr Matousek 2014-03-06 03:09:20 EST
(In reply to Petr Matousek from comment #5)
> Upstream patch submission:
> 
> http://patchwork.ozlabs.org/patch/325898/

Upstream commit:

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ec0223ec48a9
Comment 7 Fedora Update System 2014-03-06 03:09:49 EST
kernel-3.13.5-202.fc20 has been pushed to the Fedora 20 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 8 Fedora Update System 2014-03-08 23:38:28 EST
kernel-3.13.5-103.fc19 has been pushed to the Fedora 19 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 9 errata-xmlrpc 2014-04-01 04:24:27 EDT
This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2014:0328 https://rhn.redhat.com/errata/RHSA-2014-0328.html
Comment 11 errata-xmlrpc 2014-04-22 13:46:47 EDT
This issue has been addressed in following products:

  Red Hat Enterprise Linux 6.3 EUS - Server and Compute Node Only

Via RHSA-2014:0419 https://rhn.redhat.com/errata/RHSA-2014-0419.html
Comment 12 errata-xmlrpc 2014-04-24 13:43:57 EDT
This issue has been addressed in following products:

  Red Hat Enterprise Linux 6.4 EUS - Server and Compute Node Only

Via RHSA-2014:0432 https://rhn.redhat.com/errata/RHSA-2014-0432.html
Comment 13 errata-xmlrpc 2014-05-20 07:01:09 EDT
This issue has been addressed in following products:

  Red Hat Enterprise Linux 6.2 AUS

Via RHSA-2014:0520 https://rhn.redhat.com/errata/RHSA-2014-0520.html