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Bug 1457329 - (CVE-2017-9264) CVE-2017-9264 openvswitch: Buffer over-read while parsing malformed TCP, UDP and IPv6 packets
CVE-2017-9264 openvswitch: Buffer over-read while parsing malformed TCP, UDP ...
Status: NEW
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
impact=moderate,public=20170303,repor...
: Security
Depends On: 1456797 1466599 1466600 1466601 1466602 1470453 1470459
Blocks: 1456799
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Reported: 2017-05-31 10:09 EDT by Andrej Nemec
Modified: 2018-06-29 18:21 EDT (History)
44 users (show)

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Fixed In Version:
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Doc Text:
A buffer over-read was found in the Open vSwitch (OvS) firewall implementation. This flaw can be triggered by parsing a specially crafted TCP, UDP, or IPv6 packet. A remote attack could use this flaw to cause a Denial of Service (DoS).
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RHEL 7.3 requirements from Atomic Host:
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External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2017:2418 normal SHIPPED_LIVE Moderate: openvswitch security, bug fix, and enhancement update 2017-08-03 12:35:07 EDT
Red Hat Product Errata RHSA-2017:2648 normal SHIPPED_LIVE Moderate: openvswitch security and bug fix update 2017-09-06 16:53:24 EDT
Red Hat Product Errata RHSA-2017:2727 normal SHIPPED_LIVE Moderate: openvswitch security update 2017-09-13 21:39:00 EDT

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Description Andrej Nemec 2017-05-31 10:09:51 EDT 
In lib/conntrack.c in the firewall implementation in Open vSwitch, there is a buffer over-read while parsing malformed TCP, UDP, and IPv6 packets in the functions `extract_l3_ipv6`, `extract_l4_tcp`, and `extract_l4_udp` that can be triggered remotely.

References:

https://mail.openvswitch.org/pipermail/ovs-dev/2017-March/329323.html
Comment 1 Andrej Nemec 2017-05-31 10:27:22 EDT 
Created openvswitch tracking bugs for this issue:

Affects: fedora-all [bug 1456797]
Comment 9 errata-xmlrpc 2017-08-03 08:37:32 EDT 
This issue has been addressed in the following products:

  Fast Datapath for RHEL 7

Via RHSA-2017:2418 https://access.redhat.com/errata/RHSA-2017:2418
Comment 10 errata-xmlrpc 2017-09-06 13:02:59 EDT 
This issue has been addressed in the following products:

  Red Hat OpenStack Platform 10.0 (Newton)

Via RHSA-2017:2648 https://access.redhat.com/errata/RHSA-2017:2648
Comment 11 errata-xmlrpc 2017-09-13 17:42:35 EDT 
This issue has been addressed in the following products:

  Red Hat OpenStack Platform 11.0 (Ocata)

Via RHSA-2017:2727 https://access.redhat.com/errata/RHSA-2017:2727
Comment 12 Jason Shepherd 2018-04-03 03:12:52 EDT 
Updated fixed in version to 2.7.2-1 based on packages released in https://access.redhat.com/errata/RHSA-2017:2418.

Openshift Enterprise 3.7 uses the fixed version 2.7.2-1. Marking as not affected.
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