rhsa-2014_0091
Vulnerability from csaf_redhat
Published
2014-01-22 18:31
Modified
2024-11-22 07:31
Summary
Red Hat Security Advisory: openstack-neutron security, bug fix, and enhancement update

Notes

Topic
Updated openstack-neutron packages that fix one security issue, several bugs, and add various enhancements are now available for Red Hat Enterprise Linux OpenStack Platform 4.0. The Red Hat Security Response Team has rated this update as having 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
The openstack-neutron packages provide Openstack Networking (neutron), the virtual network service. It was discovered that the metadata agent in OpenStack Networking was missing an authorization check on the device ID that is bound to a specific port. A remote tenant could guess the instance ID bound to a port and retrieve metadata of another tenant, resulting in information disclosure. Note that only OpenStack Networking setups running neutron-metadata-agent were affected. (CVE-2013-6419) Red Hat would like to thank Jeremy Stanley of the OpenStack Project for reporting this issue. Upstream acknowledges Aaron Rosen of VMware as the original reporter. The openstack-neutron packages have been upgraded to upstream version 2013.2.1, which provides a number of bug fixes and enhancements over the previous version. The most notable fixes and enhancements are: - Support for multiple workers in the Neutron API. This can be achieved by setting the 'workers=' parameter in the neutron.conf file. - The downtime and report interval default settings are tuned for neutron agents. - The floating IP address stability has been enhanced. - A heartbeat-related deadlock problem in neutron-server has been fixed. (BZ#1045419) This update also fixes the following bugs: * An incorrect warning was displayed when running neutron-dhcp-agent with Red Hat Enterprise Linux's version of dnsmasq. This meant that users were incorrectly warned that Red Hat Enterprise Linux's dnsmasq version will not work with neutron-dhcp-agent. This warning has been removed, and will no longer be logged to the neutron-dhcp-agent log file. (BZ#1040196) * A bug in the QPID topic consumer re-connection logic (under the v2 topology) caused qpidd to use a malformed subscriber address after restarting, resulting in RPC requests sent to a topic with multiple servers ending up being incorrectly multicast to all servers. This update removes the special-case reconnect logic that handles UUID addresses, which in turn avoids the incorrect establishment of multiple subscription to the same fanout address. The QPID broker now simply automatically generates unique queue names when clients reconnect. (BZ#1045067) * Thread-consuming QPID messages were killed silently by unhandled errors, thus resulting in isolating the component from the rest of the system. With this update, consuming threads are made more resilient to errors by ensuring they do not die on an unhandled error. The error is now logged, and the consuming thread is retried. (BZ#1054249) In addition, this update adds the following enhancement: * Previously, instances connected to tenant networks gained outside connectivity by going through an SNAT by the L3 agent hosting that network's virtual router. With this release, the ability to disable SNAT/PAT on virtual servers is added ensuring that an instance in a tenant network subnet will retain its IP address as it passes through external networks. For example, if 10.0.0.1 is an instance in the 10.0.0.0/8 tenant network, R1, a virtual router that connects the 10.0.0.0/8 subnet to the 20.0.0.0/8 public provider networks, then you can use the 'neutron router-gateway-set --disable-snat R1 public' command and any traffic from 10.0.0.1, which is forwarded out to the provider network, will retain its actual source IP address of 10.0.0.1. This can be a flexible and useful method to connect instances directly to a provider network, while retaining it in a tenant network. (BZ#1046070) All openstack-neutron users are advised to upgrade to these updated packages, which correct these issues and add these enhancements.
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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        "category": "summary",
        "text": "Updated openstack-neutron packages that fix one security issue, several\nbugs, and add various enhancements are now available for Red Hat Enterprise\nLinux OpenStack Platform 4.0.\n\nThe Red Hat Security Response Team has rated this update as having moderate\nsecurity impact. A Common Vulnerability Scoring System (CVSS) base score,\nwhich gives a detailed severity rating, is available from the CVE link in\nthe References section.",
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        "text": "The openstack-neutron packages provide Openstack Networking (neutron), the\nvirtual network service.\n\nIt was discovered that the metadata agent in OpenStack Networking was\nmissing an authorization check on the device ID that is bound to a specific\nport. A remote tenant could guess the instance ID bound to a port and\nretrieve metadata of another tenant, resulting in information disclosure.\nNote that only OpenStack Networking setups running neutron-metadata-agent\nwere affected. (CVE-2013-6419)\n\nRed Hat would like to thank Jeremy Stanley of the OpenStack Project for\nreporting this issue. Upstream acknowledges Aaron Rosen of VMware as the\noriginal reporter.\n\nThe openstack-neutron packages have been upgraded to upstream version\n2013.2.1, which provides a number of bug fixes and enhancements over the\nprevious version. The most notable fixes and enhancements are:\n\n- Support for multiple workers in the Neutron API. This can be achieved by\n  setting the \u0027workers=\u0027 parameter in the neutron.conf file.\n\n- The downtime and report interval default settings are tuned for\n  neutron agents.\n\n- The floating IP address stability has been enhanced.\n\n- A heartbeat-related deadlock problem in neutron-server has been fixed.\n\n(BZ#1045419)\n\nThis update also fixes the following bugs:\n\n* An incorrect warning was displayed when running neutron-dhcp-agent with\nRed Hat Enterprise Linux\u0027s version of dnsmasq. This meant that users were\nincorrectly warned that Red Hat Enterprise Linux\u0027s dnsmasq version will not\nwork with neutron-dhcp-agent. This warning has been removed, and will no\nlonger be logged to the neutron-dhcp-agent log file. (BZ#1040196)\n\n* A bug in the QPID topic consumer re-connection logic (under the v2\ntopology) caused qpidd to use a malformed subscriber address after\nrestarting, resulting in RPC requests sent to a topic with multiple servers\nending up being incorrectly multicast to all servers. This update removes\nthe special-case reconnect logic that handles UUID addresses, which in turn\navoids the incorrect establishment of multiple subscription to the same\nfanout address. The QPID broker now simply automatically generates unique\nqueue names when clients reconnect. (BZ#1045067)\n\n* Thread-consuming QPID messages were killed silently by unhandled errors,\nthus resulting in isolating the component from the rest of the system.\nWith this update, consuming threads are made more resilient to errors by\nensuring they do not die on an unhandled error. The error is now logged,\nand the consuming thread is retried. (BZ#1054249)\n\nIn addition, this update adds the following enhancement:\n\n* Previously, instances connected to tenant networks gained outside\nconnectivity by going through an SNAT by the L3 agent hosting that\nnetwork\u0027s virtual router. With this release, the ability to disable\nSNAT/PAT on virtual servers is added ensuring that an instance in a tenant\nnetwork subnet will retain its IP address as it passes through external\nnetworks. For example, if 10.0.0.1 is an instance in the 10.0.0.0/8 tenant\nnetwork, R1, a virtual router that connects the 10.0.0.0/8 subnet to the\n20.0.0.0/8 public provider networks, then you can use the \u0027neutron\nrouter-gateway-set --disable-snat R1 public\u0027 command and any traffic from\n10.0.0.1, which is forwarded out to the provider network, will retain its\nactual source IP address of 10.0.0.1. This can be a flexible and useful\nmethod to connect instances directly to a provider network, while retaining\nit in a tenant network. (BZ#1046070)\n\nAll openstack-neutron users are advised to upgrade to these updated\npackages, which correct these issues and add these enhancements.",
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  "vulnerabilities": [
    {
      "acknowledgments": [
        {
          "names": [
            "OpenStack Project"
          ]
        },
        {
          "names": [
            "Aaron Rosen"
          ],
          "organization": "VMware",
          "summary": "Acknowledged by upstream."
        }
      ],
      "cve": "CVE-2013-6419",
      "discovery_date": "2013-12-06T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1039148"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "Interaction error in OpenStack Nova and Neutron before Havana 2013.2.1 and icehouse-1 does not validate the instance ID of the tenant making a request, which allows remote tenants to obtain sensitive metadata by spoofing the device ID that is bound to a port, which is not properly handled by (1) api/metadata/handler.py in Nova and (2) the neutron-metadata-agent (agent/metadata/agent.py) in Neutron.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "Nova: Metadata queries from Neutron to Nova are not restricted by tenant",
          "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"
        }
      ],
      "product_status": {
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        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2013-6419"
        },
        {
          "category": "external",
          "summary": "RHBZ#1039148",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1039148"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2013-6419",
          "url": "https://www.cve.org/CVERecord?id=CVE-2013-6419"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2013-6419",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2013-6419"
        }
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      "release_date": "2013-12-11T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2014-01-22T18:31:15+00:00",
          "details": "Before applying this update, make sure all previously released errata\nrelevant to your system have been applied.\n\nThis update is available via the Red Hat Network. Details on how to\nuse the Red Hat Network to apply this update are available at\nhttps://access.redhat.com/site/articles/11258",
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          "restart_required": {
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            "accessVector": "NETWORK",
            "authentication": "SINGLE",
            "availabilityImpact": "NONE",
            "baseScore": 4.0,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "NONE",
            "vectorString": "AV:N/AC:L/Au:S/C:P/I:N/A:N",
            "version": "2.0"
          },
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      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "Nova: Metadata queries from Neutron to Nova are not restricted by tenant"
    }
  ]
}


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