Bug 1457329 (CVE-2017-9264)

Summary:	CVE-2017-9264 openvswitch: Buffer over-read while parsing malformed TCP, UDP and IPv6 packets
Product:	[Other] Security Response	Reporter:	Andrej Nemec <anemec>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	aconole, ahardin, apevec, atragler, bleanhar, bmcclain, ccoleman, chrisw, cvsbot-xmlrpc, danken, dbaker, dblechte, dedgar, dmcphers, eedri, fleitner, gmollett, jgoulding, jjoyce, jkeck, joelsmith, jokerman, jschluet, kbasil, lhh, lpeer, markmc, mburns, mchappel, mgoldboi, michal.skrivanek, ovs-team, rbryant, rhos-maint, sclewis, sisharma, slinaber, srevivo, tdecacqu, tgraf, tredaelli, ykaul
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
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).	Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-06-08 03:13:48 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:	1456797, 1466599, 1466600, 1466601, 1466602, 1470453, 1470459
Bug Blocks:	1456799

Description Andrej Nemec 2017-05-31 14:09:51 UTC

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 14:27:22 UTC

Created openvswitch tracking bugs for this issue:

Affects: fedora-all [bug 1456797]

Comment 9 errata-xmlrpc 2017-08-03 12:37:32 UTC

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 17:02:59 UTC

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 21:42:35 UTC

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 07:12:52 UTC

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.