Bug 1232284 (CVE-2015-3221) - CVE-2015-3221 openstack-neutron: L2 agent DoS through incorrect allowed address pairs
Summary: CVE-2015-3221 openstack-neutron: L2 agent DoS through incorrect allowed addre...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2015-3221
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1233450 1234263 1240145 1240146
Blocks: 1232286
TreeView+ depends on / blocked
 
Reported: 2015-06-16 12:27 UTC by Vasyl Kaigorodov
Modified: 2019-09-29 13:33 UTC (History)
18 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
A Denial-of-Service flaw was found in the OpenStack Networking (neutron) L2 agent when using the iptables firewall driver. By submitting an address pair that is rejected as invalid by the ipset tool (with zero prefix size), an authenticated attacker can cause the L2 agent to crash.
Clone Of:
Environment:
Last Closed: 2015-08-26 04:43:14 UTC


Attachments (Terms of Use)
cve-2015-3221-master-liberty.patch (4.86 KB, text/plain)
2015-06-18 15:41 UTC, Vasyl Kaigorodov
no flags Details
cve-2015-3221-stable-juno.patch (6.31 KB, text/plain)
2015-06-18 15:42 UTC, Vasyl Kaigorodov
no flags Details
cve-2015-3221-stable-kilo.patch (5.12 KB, text/plain)
2015-06-18 15:42 UTC, Vasyl Kaigorodov
no flags Details


Links
System ID Priority Status Summary Last Updated
Launchpad 1461054 None None None Never
Red Hat Product Errata RHSA-2015:1680 normal SHIPPED_LIVE Moderate: openstack-neutron security and bug fix update 2015-08-25 00:12:31 UTC

Description Vasyl Kaigorodov 2015-06-16 12:27:30 UTC
Title: Neutron L2 agent DoS through incorrect allowed address pairs
Reporter: Darragh O'Reilly (HP)
Products: Neutron
Affects: 2014.2 versions through 2014.2.3 and 2015.1.0 version

Description:
Darragh O'Reilly from HP reported a vulnerability in Neutron. By adding
an address pair which is rejected as invalid by the ipset tool, an
authenticated user may crash the Neutron L2 agent resulting in a denial
of service attack. Neutron setups using the IPTables firewall driver are
affected.

Acknowledgements:

Red Hat would like to thank the OpenStack upstream for reporting this issue. Upstream acknowledges Darragh O'Reilly (HP) as the original reporter.

Comment 1 Vasyl Kaigorodov 2015-06-18 15:41:59 UTC
Created attachment 1040537 [details]
cve-2015-3221-master-liberty.patch

Comment 2 Vasyl Kaigorodov 2015-06-18 15:42:03 UTC
Created attachment 1040538 [details]
cve-2015-3221-stable-juno.patch

Comment 3 Vasyl Kaigorodov 2015-06-18 15:42:06 UTC
Created attachment 1040539 [details]
cve-2015-3221-stable-kilo.patch

Comment 6 Tristan Cacqueray 2015-06-19 20:10:57 UTC
Some more notes, the kilo and liberty patch are self healing, if a zero prefixed address pair have already been assigned, then it will be fixed when the service restarts.

Juno patch on the other hand will block attempt to use zero prefixed address pair and if a zero prefixed address pair have already been assigned, then the script included in the patch needs to be run in order to fix it.

Comment 8 Garth Mollett 2015-07-06 05:19:27 UTC
Created openstack-neutron tracking bugs for this issue:

Affects: fedora-all [bug 1240145]
Affects: openstack-rdo [bug 1240146]

Comment 10 errata-xmlrpc 2015-08-24 20:15:43 UTC
This issue has been addressed in the following products:

  OpenStack 6 for RHEL 7

Via RHSA-2015:1680 https://rhn.redhat.com/errata/RHSA-2015-1680.html


Note You need to log in before you can comment on or make changes to this bug.