RHSA-2015:1680
Vulnerability from csaf_redhat
Published
2015-08-24 20:12
Modified
2024-11-22 09:20
Summary
Red Hat Security Advisory: openstack-neutron security and bug fix update

Notes

Topic
Updated openstack-neutron packages that fix one security issue are now available for Red Hat Enterprise Linux OpenStack Platform 6.0 Red Hat Product Security has rated this update as having a Moderate security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.
Details
OpenStack Networking (Neutron) is a pluggable, scalable, and API-driven system that provisions networking services to virtual machines. Its main function is to manage connectivity to and from virtual machines. A Denial of Service flaw was found in the L2 agent when using the IPTables firewall driver. By submitting an address pair that will be rejected as invalid by the ipset tool, an attacker may cause the agent to crash. (CVE-2015-3221) Red Hat would like to thank the OpenStack upstream for reporting this issue. Upstream acknowledges Darragh O'Reilly (HP) as the original reporter. Additionally, the packages address the following issues: * Neutron failed to load multiple configuration files. The Puppet recipe hard-coded the --config-file parameter to a set list of configuration files and additional files were not loaded, even if specified. This fix creates a new Neutron configuration directory, /etc/neutron/conf.d, and any .conf files in that directory are loaded by Puppet and applied to all services. (BZ#1188480) * When configuring load balancer as a service, the Neutron configuration used no group as the default system user group. This group does not exist in the default Red Hat Enterprise Linux 7 configuration, which caused the virtual IP address creation to fail with the error "cannot find group id for 'nogroup'." (BZ#1208002) * Log rotation was set to one week for Neutron, but that could allow the log file to grow to be very large before rotating. The default log rotation policy has been updated to include a size limit of 10MB as well as a time limit to rotate daily. (BZ#1212442) * Previously, dnsmasq did not save lease information in persistent storage. When it was restarted, the lease information was lost. This behavior resulted from removing the '--dhcp-script' option as part of fixing BZ#1202392. As a result, instances were stuck in the network boot process for a long period of time. In addition, NACK messages were noted in the dnsmasq log. This update removes the authoritative option, so that NAKs are not sent in response to DHCPREQUESTs to other servers. This change is expected to prevent dnsmasq from NAKing clients renewing leases issued before it was restarted/rescheduled. DHCPNAK messages should no longer be found in the log files. (BZ#1227635) * Conflict tags were included in the python-neutron package spec that resulted in Neutron unnecessarily blocking the python-oslo-db package. These conflicts have been removed from the spec, so the python-oslo-db package can be successfully installed. (BZ#1250056) All openstack-neutron users are advised to upgrade to these updated packages, which contain backported patches to correct these issues.
Terms of Use
This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.


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        "text": "Updated openstack-neutron packages that fix one security issue are now\navailable for Red Hat Enterprise Linux OpenStack Platform 6.0\n\nRed Hat Product Security has rated this update as having a Moderate security\nimpact. A Common Vulnerability Scoring System (CVSS) base score, which\ngives a detailed severity rating, is available from the CVE link in the\nReferences section.",
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        "text": "OpenStack Networking (Neutron) is a pluggable, scalable, and API-driven\nsystem that provisions networking services to virtual machines. Its main\nfunction is to manage connectivity to and from virtual machines.\n\nA Denial of Service flaw was found in the L2 agent when using the IPTables\nfirewall driver. By submitting an address pair that will be rejected as\ninvalid by the ipset tool, an attacker may cause the agent to crash.\n(CVE-2015-3221)\n\nRed Hat would like to thank the OpenStack upstream for reporting this\nissue. Upstream acknowledges Darragh O\u0027Reilly (HP) as the original reporter.\n\nAdditionally, the packages address the following issues:\n* Neutron failed to load multiple configuration files. The Puppet recipe\nhard-coded the --config-file parameter to a set list of configuration files\nand additional files were not loaded, even if specified. This fix creates a\nnew Neutron configuration directory, /etc/neutron/conf.d, and any .conf\nfiles in that directory are loaded by Puppet and applied to all services.\n(BZ#1188480)\n\n* When configuring load balancer as a service, the Neutron configuration\nused no group as the default system user group. This group does not exist\nin the default Red Hat Enterprise Linux 7 configuration, which caused the\nvirtual IP address creation to fail with the error \"cannot find group id\nfor \u0027nogroup\u0027.\" (BZ#1208002)\n\n* Log rotation was set to one week for Neutron, but that could allow the\nlog file to grow to be very large before rotating. The default log rotation\npolicy has been updated to include a size limit of 10MB as well as a time\nlimit to rotate daily. (BZ#1212442)\n\n* Previously, dnsmasq did not save lease information in persistent storage.\nWhen it was restarted, the lease information was lost. This behavior\nresulted from removing the \u0027--dhcp-script\u0027 option as part of fixing\nBZ#1202392. As a result, instances were stuck in the network boot process\nfor a long period of time. In addition, NACK messages were noted in the\ndnsmasq log. This update removes the authoritative option, so that NAKs are\nnot sent in response to DHCPREQUESTs to other servers. This change is\nexpected to prevent dnsmasq from NAKing clients renewing leases issued\nbefore it was restarted/rescheduled. DHCPNAK messages should no longer be\nfound in the log files. (BZ#1227635)\n\n* Conflict tags were included in the python-neutron package spec that\nresulted in Neutron unnecessarily blocking the python-oslo-db package.\nThese conflicts have been removed from the spec, so the python-oslo-db\npackage can be successfully installed. (BZ#1250056)\n\nAll openstack-neutron users are advised to upgrade to these updated\npackages, which contain backported patches to correct these issues.",
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          "category": "description",
          "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.",
          "title": "Vulnerability description"
        },
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          "category": "summary",
          "text": "openstack-neutron: L2 agent DoS through incorrect allowed address pairs",
          "title": "Vulnerability summary"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
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            "7Server-RH7-RHOS-6.0:openstack-neutron-linuxbridge-0:2014.2.3-9.el7ost.noarch",
            "7Server-RH7-RHOS-6.0:openstack-neutron-mellanox-0:2014.2.3-9.el7ost.noarch",
            "7Server-RH7-RHOS-6.0:openstack-neutron-metaplugin-0:2014.2.3-9.el7ost.noarch",
            "7Server-RH7-RHOS-6.0:openstack-neutron-metering-agent-0:2014.2.3-9.el7ost.noarch",
            "7Server-RH7-RHOS-6.0:openstack-neutron-midonet-0:2014.2.3-9.el7ost.noarch",
            "7Server-RH7-RHOS-6.0:openstack-neutron-ml2-0:2014.2.3-9.el7ost.noarch",
            "7Server-RH7-RHOS-6.0:openstack-neutron-nec-0:2014.2.3-9.el7ost.noarch",
            "7Server-RH7-RHOS-6.0:openstack-neutron-nuage-0:2014.2.3-9.el7ost.noarch",
            "7Server-RH7-RHOS-6.0:openstack-neutron-ofagent-0:2014.2.3-9.el7ost.noarch",
            "7Server-RH7-RHOS-6.0:openstack-neutron-oneconvergence-nvsd-0:2014.2.3-9.el7ost.noarch",
            "7Server-RH7-RHOS-6.0:openstack-neutron-opencontrail-0:2014.2.3-9.el7ost.noarch",
            "7Server-RH7-RHOS-6.0:openstack-neutron-openvswitch-0:2014.2.3-9.el7ost.noarch",
            "7Server-RH7-RHOS-6.0:openstack-neutron-plumgrid-0:2014.2.3-9.el7ost.noarch",
            "7Server-RH7-RHOS-6.0:openstack-neutron-ryu-0:2014.2.3-9.el7ost.noarch",
            "7Server-RH7-RHOS-6.0:openstack-neutron-sriov-nic-agent-0:2014.2.3-9.el7ost.noarch",
            "7Server-RH7-RHOS-6.0:openstack-neutron-vmware-0:2014.2.3-9.el7ost.noarch",
            "7Server-RH7-RHOS-6.0:openstack-neutron-vpn-agent-0:2014.2.3-9.el7ost.noarch",
            "7Server-RH7-RHOS-6.0:python-neutron-0:2014.2.3-9.el7ost.noarch"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2015:1680"
        }
      ],
      "scores": [
        {
          "cvss_v2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "SINGLE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 4.0,
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "vectorString": "AV:N/AC:L/Au:S/C:N/I:N/A:P",
            "version": "2.0"
          },
          "products": [
            "7Server-RH7-RHOS-6.0:openstack-neutron-0:2014.2.3-9.el7ost.noarch",
            "7Server-RH7-RHOS-6.0:openstack-neutron-0:2014.2.3-9.el7ost.src",
            "7Server-RH7-RHOS-6.0:openstack-neutron-bigswitch-0:2014.2.3-9.el7ost.noarch",
            "7Server-RH7-RHOS-6.0:openstack-neutron-brocade-0:2014.2.3-9.el7ost.noarch",
            "7Server-RH7-RHOS-6.0:openstack-neutron-cisco-0:2014.2.3-9.el7ost.noarch",
            "7Server-RH7-RHOS-6.0:openstack-neutron-common-0:2014.2.3-9.el7ost.noarch",
            "7Server-RH7-RHOS-6.0:openstack-neutron-embrane-0:2014.2.3-9.el7ost.noarch",
            "7Server-RH7-RHOS-6.0:openstack-neutron-hyperv-0:2014.2.3-9.el7ost.noarch",
            "7Server-RH7-RHOS-6.0:openstack-neutron-ibm-0:2014.2.3-9.el7ost.noarch",
            "7Server-RH7-RHOS-6.0:openstack-neutron-linuxbridge-0:2014.2.3-9.el7ost.noarch",
            "7Server-RH7-RHOS-6.0:openstack-neutron-mellanox-0:2014.2.3-9.el7ost.noarch",
            "7Server-RH7-RHOS-6.0:openstack-neutron-metaplugin-0:2014.2.3-9.el7ost.noarch",
            "7Server-RH7-RHOS-6.0:openstack-neutron-metering-agent-0:2014.2.3-9.el7ost.noarch",
            "7Server-RH7-RHOS-6.0:openstack-neutron-midonet-0:2014.2.3-9.el7ost.noarch",
            "7Server-RH7-RHOS-6.0:openstack-neutron-ml2-0:2014.2.3-9.el7ost.noarch",
            "7Server-RH7-RHOS-6.0:openstack-neutron-nec-0:2014.2.3-9.el7ost.noarch",
            "7Server-RH7-RHOS-6.0:openstack-neutron-nuage-0:2014.2.3-9.el7ost.noarch",
            "7Server-RH7-RHOS-6.0:openstack-neutron-ofagent-0:2014.2.3-9.el7ost.noarch",
            "7Server-RH7-RHOS-6.0:openstack-neutron-oneconvergence-nvsd-0:2014.2.3-9.el7ost.noarch",
            "7Server-RH7-RHOS-6.0:openstack-neutron-opencontrail-0:2014.2.3-9.el7ost.noarch",
            "7Server-RH7-RHOS-6.0:openstack-neutron-openvswitch-0:2014.2.3-9.el7ost.noarch",
            "7Server-RH7-RHOS-6.0:openstack-neutron-plumgrid-0:2014.2.3-9.el7ost.noarch",
            "7Server-RH7-RHOS-6.0:openstack-neutron-ryu-0:2014.2.3-9.el7ost.noarch",
            "7Server-RH7-RHOS-6.0:openstack-neutron-sriov-nic-agent-0:2014.2.3-9.el7ost.noarch",
            "7Server-RH7-RHOS-6.0:openstack-neutron-vmware-0:2014.2.3-9.el7ost.noarch",
            "7Server-RH7-RHOS-6.0:openstack-neutron-vpn-agent-0:2014.2.3-9.el7ost.noarch",
            "7Server-RH7-RHOS-6.0:python-neutron-0:2014.2.3-9.el7ost.noarch"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "openstack-neutron: L2 agent DoS through incorrect allowed address pairs"
    }
  ]
}


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