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Bug 1163087 (CVE-2014-7841)

Summary: CVE-2014-7841 kernel: net: sctp: NULL pointer dereference in af->from_addr_param on malformed packet
Product: [Other] Security Response Reporter: Petr Matousek <pmatouse>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: aquini, bhu, dhoward, fhrbata, gansalmon, iboverma, itamar, jforbes, jkacur, jonathan, jross, jwboyer, kernel-maint, kernel-mgr, lgoncalv, madhu.chinakonda, matt, mchehab, mcressma, nmurray, plougher, rt-maint, rvrbovsk, williams
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
A flaw was found in the way the Linux kernel's SCTP implementation validated INIT chunks when performing Address Configuration Change (ASCONF). A remote attacker could use this flaw to crash the system by sending a specially crafted SCTP packet to trigger a NULL pointer dereference on the system.
Story Points: ---
Clone Of: Environment:
Last Closed: 2019-06-08 02:36:03 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: 1153980, 1154002, 1163090, 1163092, 1163093, 1163094, 1163095, 1163097    
Bug Blocks:    

Description Petr Matousek 2014-11-12 11:08:12 UTC
An SCTP server doing ASCONF will panic on malformed INIT ping-of-death in
the form of:

 ------------ INIT[PARAM: SET_PRIMARY_IP] ------------>

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

Upstream patch:

https://git.kernel.org/cgit/linux/kernel/git/davem/net.git/commit/?id=e40607cbe270a9e8360907cb1e62ddf0736e4864

Acknowledgements:

This issue was discovered by Liu Wei of Red Hat.

Comment 1 Petr Matousek 2014-11-12 11:19:36 UTC
Statement:

This issue does not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 5.

This issue does affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 6, 7 and Red Hat Enterprise MRG 2. Future kernel updates for the respective releases may address this issue.

Comment 3 Petr Matousek 2014-11-12 11:21:33 UTC
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1163095]

Comment 6 Fedora Update System 2014-11-18 12:17:43 UTC
kernel-3.17.3-300.fc21 has been pushed to the Fedora 21 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 7 Fedora Update System 2014-11-20 23:04:10 UTC
kernel-3.17.3-200.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 2015-01-05 07:35:01 UTC
kernel-3.14.27-100.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 2015-01-27 19:46:33 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2015:0087 https://rhn.redhat.com/errata/RHSA-2015-0087.html

Comment 10 errata-xmlrpc 2015-01-28 19:10:00 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2015:0102 https://rhn.redhat.com/errata/RHSA-2015-0102.html

Comment 11 errata-xmlrpc 2015-03-03 12:50:02 UTC
This issue has been addressed in the following products:

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

Via RHSA-2015:0285 https://rhn.redhat.com/errata/RHSA-2015-0285.html

Comment 12 errata-xmlrpc 2015-03-03 12:50:58 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6.5 EUS - Server and Compute Node Only

Via RHSA-2015:0284 https://rhn.redhat.com/errata/RHSA-2015-0284.html

Comment 14 errata-xmlrpc 2015-03-17 14:40:13 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6.2 AUS

Via RHSA-2015:0695 https://rhn.redhat.com/errata/RHSA-2015-0695.html