Bug 1011927 (CVE-2013-4387)

Summary: CVE-2013-4387 Kernel: net: IPv6: panic when UFO=On for an interface
Product: [Other] Security Response Reporter: Prasad J Pandit <prasad>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: agordeev, aquini, bhu, dhoward, esammons, fhrbata, iboverma, jkacur, jkurik, jross, jrusnack, kernel-mgr, lgoncalv, lwang, matt, mcressma, mmilgram, nobody, pmatouse, rkhan, security-response-team, williams
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard: impact=important,public=20130921,reported=20130919,source=redhat,cvss2=6.1/AV:A/AC:L/Au:N/C:N/I:N/A:C,rhel-5/kernel=notaffected,rhel-6/kernel=affected,rhel-7/kernel=notaffected,mrg-2/realtime-kernel=affected,fedora-all/kernel=affected,cwe=CWE-476
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2015-05-20 09:06:52 EDT Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Bug Depends On: 1011930, 1011931, 1011932, 1011933, 1015166, 1061110    
Bug Blocks: 1009905    

Description Prasad J Pandit 2013-09-25 08:05:55 EDT
Linux kernel built with the IPv6 protocol(CONFIG_IPV6) support and an Ethernet
driver(ex. virtio-net) which has a UDP Fragmentation Offload(UFO) feature ON
is vulnerable to inadvertent memory corruptions and NULL pointer dereference 
flaw. It could occur while sending a large messages over an IPv6 connection. 
Though the crash occurs while sending messages, it could be triggered through a 
remote client by requesting larger data from a server.

A remote user user could use this flaw to crash the kernel, resulting in DoS. Despite the random nature of the memory corruptions, potential privilege escalation cannot be ruled out.

Upstream fix:
-------------
 -> https://git.kernel.org/linus/2811ebac2521ceac84f2bdae402455baa6a7fb47

Reference:
----------
 -> http://www.openwall.com/lists/oss-security/2013/09/29/1
Comment 1 Prasad J Pandit 2013-09-25 08:11:03 EDT
Statement:

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

This issue affects the versions of Linux kernel as shipped with Red Hat Enterprise Linux 6 and Red Hat Enterprise MRG 2. Future kernel updates for Red Hat Enterprise Linux 6 and Red Hat Enterprise MRG 2 may address this issue.
Comment 6 Prasad J Pandit 2013-10-03 10:39:51 EDT
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1015166]
Comment 8 Fedora Update System 2013-10-09 20:55:49 EDT
kernel-3.10.14-100.fc18 has been pushed to the Fedora 18 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 9 Fedora Update System 2013-10-13 15:56:56 EDT
kernel-3.11.4-301.fc20 has been pushed to the Fedora 20 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 10 Fedora Update System 2013-10-14 03:11:45 EDT
kernel-3.11.4-201.fc19 has been pushed to the Fedora 19 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 11 Fedora Update System 2013-10-14 13:18:37 EDT
kernel-3.11.4-201.fc19 has been pushed to the Fedora 19 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 12 Fedora Update System 2013-10-18 15:32:27 EDT
kernel-3.11.4-101.fc18 has been pushed to the Fedora 18 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 13 errata-xmlrpc 2013-10-31 12:32:43 EDT
This issue has been addressed in following products:

  MRG for RHEL-6 v.2

Via RHSA-2013:1490 https://rhn.redhat.com/errata/RHSA-2013-1490.html
Comment 14 errata-xmlrpc 2013-11-21 15:24:01 EST
This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2013:1645 https://rhn.redhat.com/errata/RHSA-2013-1645.html
Comment 16 errata-xmlrpc 2014-03-11 13:07:46 EDT
This issue has been addressed in following products:

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

Via RHSA-2014:0284 https://rhn.redhat.com/errata/RHSA-2014-0284.html