Vulnerability-Lookup

RHSA-2017:2448

Vulnerability from csaf_redhat - Published: 2017-08-08 22:30 - Updated: 2026-07-31 14:36

Summary

Red Hat Security Advisory: openstack-neutron security update

Severity

Important

Notes

Topic: An update for openstack-neutron is now available for Red Hat OpenStack Platform 10.0 (Newton). Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) 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. Security Fix(es): * A race-condition flaw was discovered in openstack-neutron where, following a minor overcloud update, neutron security groups were disabled. Specifically, the following were reset to 0: net.bridge.bridge-nf-call-ip6tables and net.bridge.bridge-nf-call-iptables. The race was only triggered by an update, at which point an attacker could access exposed tenant VMs and network resources. (CVE-2017-7543) This issue was discovered by Paul Needle (Red Hat).

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.

CVE-2017-7543

A race-condition flaw was discovered in openstack-neutron where, following a minor overcloud update, neutron security groups were disabled. Specifically, the following were reset to 0: net.bridge.bridge-nf-call-ip6tables and net.bridge.bridge-nf-call-iptables. The race was only triggered by an update, at which point an attacker could access exposed tenant VMs and network resources.

5.3 (Medium)


                
                  CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N

CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Affected products

Fixed 12 products

Product	Version	Remediation
Unresolved product id: 7Server-RH7-RHOS-10.0:openstack-neutron-1:9.3.1-2.1.el7ost.noarch	—	Vendor Fix fix Workaround
Unresolved product id: 7Server-RH7-RHOS-10.0:openstack-neutron-1:9.3.1-2.1.el7ost.src	—	Vendor Fix fix Workaround
Unresolved product id: 7Server-RH7-RHOS-10.0:openstack-neutron-common-1:9.3.1-2.1.el7ost.noarch	—	Vendor Fix fix Workaround
Unresolved product id: 7Server-RH7-RHOS-10.0:openstack-neutron-linuxbridge-1:9.3.1-2.1.el7ost.noarch	—	Vendor Fix fix Workaround
Unresolved product id: 7Server-RH7-RHOS-10.0:openstack-neutron-macvtap-agent-1:9.3.1-2.1.el7ost.noarch	—	Vendor Fix fix Workaround
Unresolved product id: 7Server-RH7-RHOS-10.0:openstack-neutron-metering-agent-1:9.3.1-2.1.el7ost.noarch	—	Vendor Fix fix Workaround
Unresolved product id: 7Server-RH7-RHOS-10.0:openstack-neutron-ml2-1:9.3.1-2.1.el7ost.noarch	—	Vendor Fix fix Workaround
Unresolved product id: 7Server-RH7-RHOS-10.0:openstack-neutron-openvswitch-1:9.3.1-2.1.el7ost.noarch	—	Vendor Fix fix Workaround
Unresolved product id: 7Server-RH7-RHOS-10.0:openstack-neutron-rpc-server-1:9.3.1-2.1.el7ost.noarch	—	Vendor Fix fix Workaround
Unresolved product id: 7Server-RH7-RHOS-10.0:openstack-neutron-sriov-nic-agent-1:9.3.1-2.1.el7ost.noarch	—	Vendor Fix fix Workaround
Unresolved product id: 7Server-RH7-RHOS-10.0:python-neutron-1:9.3.1-2.1.el7ost.noarch	—	Vendor Fix fix Workaround
Unresolved product id: 7Server-RH7-RHOS-10.0:python-neutron-tests-1:9.3.1-2.1.el7ost.noarch	—	Vendor Fix fix Workaround

Threats

Impact Important

References

8 references

URL	Category
https://access.redhat.com/errata/RHSA-2017:2448	self
https://access.redhat.com/security/updates/classi…	external
https://bugzilla.redhat.com/show_bug.cgi?id=1473792	external
https://security.access.redhat.com/data/csaf/v2/a…	self
https://access.redhat.com/security/cve/CVE-2017-7543	self
https://bugzilla.redhat.com/show_bug.cgi?id=1473792	external
https://www.cve.org/CVERecord?id=CVE-2017-7543	external
https://nvd.nist.gov/vuln/detail/CVE-2017-7543	external

Acknowledgments

Red Hat Paul Needle

JSON

To clipboard

{
  "document": {
    "aggregate_severity": {
      "namespace": "https://access.redhat.com/security/updates/classification/",
      "text": "Important"
    },
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Copyright \u00a9 Red Hat, Inc. All rights reserved.",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en",
    "notes": [
      {
        "category": "summary",
        "text": "An update for openstack-neutron is now available for Red Hat OpenStack Platform 10.0 (Newton).\n\nRed Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.",
        "title": "Topic"
      },
      {
        "category": "general",
        "text": "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.\n\nSecurity Fix(es):\n\n* A race-condition flaw was discovered in openstack-neutron where, following a minor overcloud update, neutron security groups were disabled. Specifically, the following were reset to 0: net.bridge.bridge-nf-call-ip6tables and net.bridge.bridge-nf-call-iptables. The race was only triggered by an update, at which point an attacker could access exposed tenant VMs and network resources. (CVE-2017-7543)\n\nThis issue was discovered by Paul Needle (Red Hat).",
        "title": "Details"
      },
      {
        "category": "legal_disclaimer",
        "text": "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.",
        "title": "Terms of Use"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "https://access.redhat.com/security/team/contact/",
      "issuing_authority": "Red Hat Product Security is responsible for vulnerability handling across all Red Hat products and services.",
      "name": "Red Hat Product Security",
      "namespace": "https://www.redhat.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "https://access.redhat.com/errata/RHSA-2017:2448",
        "url": "https://access.redhat.com/errata/RHSA-2017:2448"
      },
      {
        "category": "external",
        "summary": "https://access.redhat.com/security/updates/classification/#important",
        "url": "https://access.redhat.com/security/updates/classification/#important"
      },
      {
        "category": "external",
        "summary": "1473792",
        "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1473792"
      },
      {
        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2017/rhsa-2017_2448.json"
      }
    ],
    "title": "Red Hat Security Advisory: openstack-neutron security update",
    "tracking": {
      "current_release_date": "2026-07-31T14:36:14+00:00",
      "generator": {
        "date": "2026-07-31T14:36:14+00:00",
        "engine": {
          "name": "Red Hat SDEngine",
          "version": "5.3.8"
        }
      },
      "id": "RHSA-2017:2448",
      "initial_release_date": "2017-08-08T22:30:46+00:00",
      "revision_history": [
        {
          "date": "2017-08-08T22:30:46+00:00",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2017-08-08T22:30:46+00:00",
          "number": "2",
          "summary": "Last updated version"
        },
        {
          "date": "2026-07-31T14:36:14+00:00",
          "number": "3",
          "summary": "Last generated version"
        }
      ],
      "status": "final",
      "version": "3"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_name",
                "name": "Red Hat OpenStack Platform 10.0",
                "product": {
                  "name": "Red Hat OpenStack Platform 10.0",
                  "product_id": "7Server-RH7-RHOS-10.0",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:redhat:openstack:10::el7"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "Red Hat OpenStack Platform"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "openstack-neutron-1:9.3.1-2.1.el7ost.src",
                "product": {
                  "name": "openstack-neutron-1:9.3.1-2.1.el7ost.src",
                  "product_id": "openstack-neutron-1:9.3.1-2.1.el7ost.src",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/openstack-neutron@9.3.1-2.1.el7ost?arch=src\u0026epoch=1"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "src"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "openstack-neutron-1:9.3.1-2.1.el7ost.noarch",
                "product": {
                  "name": "openstack-neutron-1:9.3.1-2.1.el7ost.noarch",
                  "product_id": "openstack-neutron-1:9.3.1-2.1.el7ost.noarch",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/openstack-neutron@9.3.1-2.1.el7ost?arch=noarch\u0026epoch=1"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "openstack-neutron-common-1:9.3.1-2.1.el7ost.noarch",
                "product": {
                  "name": "openstack-neutron-common-1:9.3.1-2.1.el7ost.noarch",
                  "product_id": "openstack-neutron-common-1:9.3.1-2.1.el7ost.noarch",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/openstack-neutron-common@9.3.1-2.1.el7ost?arch=noarch\u0026epoch=1"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "openstack-neutron-macvtap-agent-1:9.3.1-2.1.el7ost.noarch",
                "product": {
                  "name": "openstack-neutron-macvtap-agent-1:9.3.1-2.1.el7ost.noarch",
                  "product_id": "openstack-neutron-macvtap-agent-1:9.3.1-2.1.el7ost.noarch",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/openstack-neutron-macvtap-agent@9.3.1-2.1.el7ost?arch=noarch\u0026epoch=1"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "openstack-neutron-rpc-server-1:9.3.1-2.1.el7ost.noarch",
                "product": {
                  "name": "openstack-neutron-rpc-server-1:9.3.1-2.1.el7ost.noarch",
                  "product_id": "openstack-neutron-rpc-server-1:9.3.1-2.1.el7ost.noarch",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/openstack-neutron-rpc-server@9.3.1-2.1.el7ost?arch=noarch\u0026epoch=1"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "openstack-neutron-sriov-nic-agent-1:9.3.1-2.1.el7ost.noarch",
                "product": {
                  "name": "openstack-neutron-sriov-nic-agent-1:9.3.1-2.1.el7ost.noarch",
                  "product_id": "openstack-neutron-sriov-nic-agent-1:9.3.1-2.1.el7ost.noarch",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/openstack-neutron-sriov-nic-agent@9.3.1-2.1.el7ost?arch=noarch\u0026epoch=1"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "openstack-neutron-ml2-1:9.3.1-2.1.el7ost.noarch",
                "product": {
                  "name": "openstack-neutron-ml2-1:9.3.1-2.1.el7ost.noarch",
                  "product_id": "openstack-neutron-ml2-1:9.3.1-2.1.el7ost.noarch",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/openstack-neutron-ml2@9.3.1-2.1.el7ost?arch=noarch\u0026epoch=1"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "python-neutron-tests-1:9.3.1-2.1.el7ost.noarch",
                "product": {
                  "name": "python-neutron-tests-1:9.3.1-2.1.el7ost.noarch",
                  "product_id": "python-neutron-tests-1:9.3.1-2.1.el7ost.noarch",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/python-neutron-tests@9.3.1-2.1.el7ost?arch=noarch\u0026epoch=1"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "openstack-neutron-metering-agent-1:9.3.1-2.1.el7ost.noarch",
                "product": {
                  "name": "openstack-neutron-metering-agent-1:9.3.1-2.1.el7ost.noarch",
                  "product_id": "openstack-neutron-metering-agent-1:9.3.1-2.1.el7ost.noarch",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/openstack-neutron-metering-agent@9.3.1-2.1.el7ost?arch=noarch\u0026epoch=1"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "python-neutron-1:9.3.1-2.1.el7ost.noarch",
                "product": {
                  "name": "python-neutron-1:9.3.1-2.1.el7ost.noarch",
                  "product_id": "python-neutron-1:9.3.1-2.1.el7ost.noarch",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/python-neutron@9.3.1-2.1.el7ost?arch=noarch\u0026epoch=1"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "openstack-neutron-linuxbridge-1:9.3.1-2.1.el7ost.noarch",
                "product": {
                  "name": "openstack-neutron-linuxbridge-1:9.3.1-2.1.el7ost.noarch",
                  "product_id": "openstack-neutron-linuxbridge-1:9.3.1-2.1.el7ost.noarch",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/openstack-neutron-linuxbridge@9.3.1-2.1.el7ost?arch=noarch\u0026epoch=1"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "openstack-neutron-openvswitch-1:9.3.1-2.1.el7ost.noarch",
                "product": {
                  "name": "openstack-neutron-openvswitch-1:9.3.1-2.1.el7ost.noarch",
                  "product_id": "openstack-neutron-openvswitch-1:9.3.1-2.1.el7ost.noarch",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/openstack-neutron-openvswitch@9.3.1-2.1.el7ost?arch=noarch\u0026epoch=1"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "noarch"
          }
        ],
        "category": "vendor",
        "name": "Red Hat"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "openstack-neutron-1:9.3.1-2.1.el7ost.noarch as a component of Red Hat OpenStack Platform 10.0",
          "product_id": "7Server-RH7-RHOS-10.0:openstack-neutron-1:9.3.1-2.1.el7ost.noarch"
        },
        "product_reference": "openstack-neutron-1:9.3.1-2.1.el7ost.noarch",
        "relates_to_product_reference": "7Server-RH7-RHOS-10.0"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "openstack-neutron-1:9.3.1-2.1.el7ost.src as a component of Red Hat OpenStack Platform 10.0",
          "product_id": "7Server-RH7-RHOS-10.0:openstack-neutron-1:9.3.1-2.1.el7ost.src"
        },
        "product_reference": "openstack-neutron-1:9.3.1-2.1.el7ost.src",
        "relates_to_product_reference": "7Server-RH7-RHOS-10.0"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "openstack-neutron-common-1:9.3.1-2.1.el7ost.noarch as a component of Red Hat OpenStack Platform 10.0",
          "product_id": "7Server-RH7-RHOS-10.0:openstack-neutron-common-1:9.3.1-2.1.el7ost.noarch"
        },
        "product_reference": "openstack-neutron-common-1:9.3.1-2.1.el7ost.noarch",
        "relates_to_product_reference": "7Server-RH7-RHOS-10.0"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "openstack-neutron-linuxbridge-1:9.3.1-2.1.el7ost.noarch as a component of Red Hat OpenStack Platform 10.0",
          "product_id": "7Server-RH7-RHOS-10.0:openstack-neutron-linuxbridge-1:9.3.1-2.1.el7ost.noarch"
        },
        "product_reference": "openstack-neutron-linuxbridge-1:9.3.1-2.1.el7ost.noarch",
        "relates_to_product_reference": "7Server-RH7-RHOS-10.0"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "openstack-neutron-macvtap-agent-1:9.3.1-2.1.el7ost.noarch as a component of Red Hat OpenStack Platform 10.0",
          "product_id": "7Server-RH7-RHOS-10.0:openstack-neutron-macvtap-agent-1:9.3.1-2.1.el7ost.noarch"
        },
        "product_reference": "openstack-neutron-macvtap-agent-1:9.3.1-2.1.el7ost.noarch",
        "relates_to_product_reference": "7Server-RH7-RHOS-10.0"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "openstack-neutron-metering-agent-1:9.3.1-2.1.el7ost.noarch as a component of Red Hat OpenStack Platform 10.0",
          "product_id": "7Server-RH7-RHOS-10.0:openstack-neutron-metering-agent-1:9.3.1-2.1.el7ost.noarch"
        },
        "product_reference": "openstack-neutron-metering-agent-1:9.3.1-2.1.el7ost.noarch",
        "relates_to_product_reference": "7Server-RH7-RHOS-10.0"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "openstack-neutron-ml2-1:9.3.1-2.1.el7ost.noarch as a component of Red Hat OpenStack Platform 10.0",
          "product_id": "7Server-RH7-RHOS-10.0:openstack-neutron-ml2-1:9.3.1-2.1.el7ost.noarch"
        },
        "product_reference": "openstack-neutron-ml2-1:9.3.1-2.1.el7ost.noarch",
        "relates_to_product_reference": "7Server-RH7-RHOS-10.0"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "openstack-neutron-openvswitch-1:9.3.1-2.1.el7ost.noarch as a component of Red Hat OpenStack Platform 10.0",
          "product_id": "7Server-RH7-RHOS-10.0:openstack-neutron-openvswitch-1:9.3.1-2.1.el7ost.noarch"
        },
        "product_reference": "openstack-neutron-openvswitch-1:9.3.1-2.1.el7ost.noarch",
        "relates_to_product_reference": "7Server-RH7-RHOS-10.0"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "openstack-neutron-rpc-server-1:9.3.1-2.1.el7ost.noarch as a component of Red Hat OpenStack Platform 10.0",
          "product_id": "7Server-RH7-RHOS-10.0:openstack-neutron-rpc-server-1:9.3.1-2.1.el7ost.noarch"
        },
        "product_reference": "openstack-neutron-rpc-server-1:9.3.1-2.1.el7ost.noarch",
        "relates_to_product_reference": "7Server-RH7-RHOS-10.0"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "openstack-neutron-sriov-nic-agent-1:9.3.1-2.1.el7ost.noarch as a component of Red Hat OpenStack Platform 10.0",
          "product_id": "7Server-RH7-RHOS-10.0:openstack-neutron-sriov-nic-agent-1:9.3.1-2.1.el7ost.noarch"
        },
        "product_reference": "openstack-neutron-sriov-nic-agent-1:9.3.1-2.1.el7ost.noarch",
        "relates_to_product_reference": "7Server-RH7-RHOS-10.0"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "python-neutron-1:9.3.1-2.1.el7ost.noarch as a component of Red Hat OpenStack Platform 10.0",
          "product_id": "7Server-RH7-RHOS-10.0:python-neutron-1:9.3.1-2.1.el7ost.noarch"
        },
        "product_reference": "python-neutron-1:9.3.1-2.1.el7ost.noarch",
        "relates_to_product_reference": "7Server-RH7-RHOS-10.0"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "python-neutron-tests-1:9.3.1-2.1.el7ost.noarch as a component of Red Hat OpenStack Platform 10.0",
          "product_id": "7Server-RH7-RHOS-10.0:python-neutron-tests-1:9.3.1-2.1.el7ost.noarch"
        },
        "product_reference": "python-neutron-tests-1:9.3.1-2.1.el7ost.noarch",
        "relates_to_product_reference": "7Server-RH7-RHOS-10.0"
      }
    ]
  },
  "vulnerabilities": [
    {
      "acknowledgments": [
        {
          "names": [
            "Paul Needle"
          ],
          "organization": "Red Hat",
          "summary": "This issue was discovered by Red Hat."
        }
      ],
      "cve": "CVE-2017-7543",
      "cwe": {
        "id": "CWE-362",
        "name": "Concurrent Execution using Shared Resource with Improper Synchronization (\u0027Race Condition\u0027)"
      },
      "discovery_date": "2017-07-20T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1473792"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A race-condition flaw was discovered in openstack-neutron where, following a minor overcloud update, neutron security groups were disabled. Specifically, the following were reset to 0: net.bridge.bridge-nf-call-ip6tables and net.bridge.bridge-nf-call-iptables. The race was only triggered by an update, at which point an attacker could access exposed tenant VMs and network resources.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "openstack-neutron: iptables not active after update",
          "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": {
        "fixed": [
          "7Server-RH7-RHOS-10.0:openstack-neutron-1:9.3.1-2.1.el7ost.noarch",
          "7Server-RH7-RHOS-10.0:openstack-neutron-1:9.3.1-2.1.el7ost.src",
          "7Server-RH7-RHOS-10.0:openstack-neutron-common-1:9.3.1-2.1.el7ost.noarch",
          "7Server-RH7-RHOS-10.0:openstack-neutron-linuxbridge-1:9.3.1-2.1.el7ost.noarch",
          "7Server-RH7-RHOS-10.0:openstack-neutron-macvtap-agent-1:9.3.1-2.1.el7ost.noarch",
          "7Server-RH7-RHOS-10.0:openstack-neutron-metering-agent-1:9.3.1-2.1.el7ost.noarch",
          "7Server-RH7-RHOS-10.0:openstack-neutron-ml2-1:9.3.1-2.1.el7ost.noarch",
          "7Server-RH7-RHOS-10.0:openstack-neutron-openvswitch-1:9.3.1-2.1.el7ost.noarch",
          "7Server-RH7-RHOS-10.0:openstack-neutron-rpc-server-1:9.3.1-2.1.el7ost.noarch",
          "7Server-RH7-RHOS-10.0:openstack-neutron-sriov-nic-agent-1:9.3.1-2.1.el7ost.noarch",
          "7Server-RH7-RHOS-10.0:python-neutron-1:9.3.1-2.1.el7ost.noarch",
          "7Server-RH7-RHOS-10.0:python-neutron-tests-1:9.3.1-2.1.el7ost.noarch"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2017-7543"
        },
        {
          "category": "external",
          "summary": "RHBZ#1473792",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1473792"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2017-7543",
          "url": "https://www.cve.org/CVERecord?id=CVE-2017-7543"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2017-7543",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2017-7543"
        }
      ],
      "release_date": "2017-08-08T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2017-08-08T22:30:46+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
          "product_ids": [
            "7Server-RH7-RHOS-10.0:openstack-neutron-1:9.3.1-2.1.el7ost.noarch",
            "7Server-RH7-RHOS-10.0:openstack-neutron-1:9.3.1-2.1.el7ost.src",
            "7Server-RH7-RHOS-10.0:openstack-neutron-common-1:9.3.1-2.1.el7ost.noarch",
            "7Server-RH7-RHOS-10.0:openstack-neutron-linuxbridge-1:9.3.1-2.1.el7ost.noarch",
            "7Server-RH7-RHOS-10.0:openstack-neutron-macvtap-agent-1:9.3.1-2.1.el7ost.noarch",
            "7Server-RH7-RHOS-10.0:openstack-neutron-metering-agent-1:9.3.1-2.1.el7ost.noarch",
            "7Server-RH7-RHOS-10.0:openstack-neutron-ml2-1:9.3.1-2.1.el7ost.noarch",
            "7Server-RH7-RHOS-10.0:openstack-neutron-openvswitch-1:9.3.1-2.1.el7ost.noarch",
            "7Server-RH7-RHOS-10.0:openstack-neutron-rpc-server-1:9.3.1-2.1.el7ost.noarch",
            "7Server-RH7-RHOS-10.0:openstack-neutron-sriov-nic-agent-1:9.3.1-2.1.el7ost.noarch",
            "7Server-RH7-RHOS-10.0:python-neutron-1:9.3.1-2.1.el7ost.noarch",
            "7Server-RH7-RHOS-10.0:python-neutron-tests-1:9.3.1-2.1.el7ost.noarch"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2017:2448"
        },
        {
          "category": "workaround",
          "details": "To determine whether your system is impacted, run:\n$ sudo sysctl net.bridge.bridge-nf-call-ip6tables \n$ sudo sysctl net.bridge.bridge-nf-call-iptables\nBoth should be set to 1\n\nTo reset security groups to \u00271\u0027:\n1. Apply the following configuration modification:\n$ sudo sed -i.back -e \u0027s/reapply_sysctl = 0/reapply_sysctl = 1/\u0027 /etc/tuned/tuned-main.conf\n\n2. Ensure the modification was successful:\n$ grep reapply_sysctl /etc/tuned/tuned-main.conf\nshould be \"reapply_sysctl = 1\"\n\n3. Check whether tuned is running:\n$ sudo systemctl status tuned\n\n4. Restart tuned to apply the new configuration:\n$ sudo systemctl restart tuned\n\n5. Recheck your security groups and the status of \u0027reapply_sysctl\u0027.",
          "product_ids": [
            "7Server-RH7-RHOS-10.0:openstack-neutron-1:9.3.1-2.1.el7ost.noarch",
            "7Server-RH7-RHOS-10.0:openstack-neutron-1:9.3.1-2.1.el7ost.src",
            "7Server-RH7-RHOS-10.0:openstack-neutron-common-1:9.3.1-2.1.el7ost.noarch",
            "7Server-RH7-RHOS-10.0:openstack-neutron-linuxbridge-1:9.3.1-2.1.el7ost.noarch",
            "7Server-RH7-RHOS-10.0:openstack-neutron-macvtap-agent-1:9.3.1-2.1.el7ost.noarch",
            "7Server-RH7-RHOS-10.0:openstack-neutron-metering-agent-1:9.3.1-2.1.el7ost.noarch",
            "7Server-RH7-RHOS-10.0:openstack-neutron-ml2-1:9.3.1-2.1.el7ost.noarch",
            "7Server-RH7-RHOS-10.0:openstack-neutron-openvswitch-1:9.3.1-2.1.el7ost.noarch",
            "7Server-RH7-RHOS-10.0:openstack-neutron-rpc-server-1:9.3.1-2.1.el7ost.noarch",
            "7Server-RH7-RHOS-10.0:openstack-neutron-sriov-nic-agent-1:9.3.1-2.1.el7ost.noarch",
            "7Server-RH7-RHOS-10.0:python-neutron-1:9.3.1-2.1.el7ost.noarch",
            "7Server-RH7-RHOS-10.0:python-neutron-tests-1:9.3.1-2.1.el7ost.noarch"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N",
            "version": "3.0"
          },
          "products": [
            "7Server-RH7-RHOS-10.0:openstack-neutron-1:9.3.1-2.1.el7ost.noarch",
            "7Server-RH7-RHOS-10.0:openstack-neutron-1:9.3.1-2.1.el7ost.src",
            "7Server-RH7-RHOS-10.0:openstack-neutron-common-1:9.3.1-2.1.el7ost.noarch",
            "7Server-RH7-RHOS-10.0:openstack-neutron-linuxbridge-1:9.3.1-2.1.el7ost.noarch",
            "7Server-RH7-RHOS-10.0:openstack-neutron-macvtap-agent-1:9.3.1-2.1.el7ost.noarch",
            "7Server-RH7-RHOS-10.0:openstack-neutron-metering-agent-1:9.3.1-2.1.el7ost.noarch",
            "7Server-RH7-RHOS-10.0:openstack-neutron-ml2-1:9.3.1-2.1.el7ost.noarch",
            "7Server-RH7-RHOS-10.0:openstack-neutron-openvswitch-1:9.3.1-2.1.el7ost.noarch",
            "7Server-RH7-RHOS-10.0:openstack-neutron-rpc-server-1:9.3.1-2.1.el7ost.noarch",
            "7Server-RH7-RHOS-10.0:openstack-neutron-sriov-nic-agent-1:9.3.1-2.1.el7ost.noarch",
            "7Server-RH7-RHOS-10.0:python-neutron-1:9.3.1-2.1.el7ost.noarch",
            "7Server-RH7-RHOS-10.0:python-neutron-tests-1:9.3.1-2.1.el7ost.noarch"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "openstack-neutron: iptables not active after update"
    }
  ]
}

CVE-2017-7543 (GCVE-0-2017-7543)

Vulnerability from cvelistv5 – Published: 2018-07-26 14:00 – Updated: 2024-08-05 16:04

Summary

A race-condition flaw was discovered in openstack-neutron before 7.2.0-12.1, 8.x before 8.3.0-11.1, 9.x before 9.3.1-2.1, and 10.x before 10.0.2-1.1, where, following a minor overcloud update, neutron security groups were disabled. Specifically, the following were reset to 0: net.bridge.bridge-nf-call-ip6tables and net.bridge.bridge-nf-call-iptables. The race was only triggered by an update, at which point an attacker could access exposed tenant VMs and network resources.

Severity

5.3 (Medium)


                        
                          CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N

CWE

CWE-362

Assigner

redhat redhat root

References

8 references

URL	Tags
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2…	x_refsource_CONFIRM
https://access.redhat.com/errata/RHSA-2017:2447	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2017:2451	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2017:2450	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2017:2448	vendor-advisoryx_refsource_REDHAT
http://www.securityfocus.com/bid/100237	vdb-entryx_refsource_BID
https://access.redhat.com/errata/RHSA-2017:2452	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2017:2449	vendor-advisoryx_refsource_REDHAT

Impacted products

1 product

Vendor	Product	Version
Red Hat	openstack-neutron	Affected: openstack-neutron-10.0.2-1.1 Affected: openstack-neutron-8.3.0-11.1 Affected: openstack-neutron-9.3.1-2.1 Affected: openstack-neutron-7.2.0-12.1

Date Public

2017-07-21 00:00

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-05T16:04:11.998Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7543"
          },
          {
            "name": "RHSA-2017:2447",
            "tags": [
              "vendor-advisory",
              "x_refsource_REDHAT",
              "x_transferred"
            ],
            "url": "https://access.redhat.com/errata/RHSA-2017:2447"
          },
          {
            "name": "RHSA-2017:2451",
            "tags": [
              "vendor-advisory",
              "x_refsource_REDHAT",
              "x_transferred"
            ],
            "url": "https://access.redhat.com/errata/RHSA-2017:2451"
          },
          {
            "name": "RHSA-2017:2450",
            "tags": [
              "vendor-advisory",
              "x_refsource_REDHAT",
              "x_transferred"
            ],
            "url": "https://access.redhat.com/errata/RHSA-2017:2450"
          },
          {
            "name": "RHSA-2017:2448",
            "tags": [
              "vendor-advisory",
              "x_refsource_REDHAT",
              "x_transferred"
            ],
            "url": "https://access.redhat.com/errata/RHSA-2017:2448"
          },
          {
            "name": "100237",
            "tags": [
              "vdb-entry",
              "x_refsource_BID",
              "x_transferred"
            ],
            "url": "http://www.securityfocus.com/bid/100237"
          },
          {
            "name": "RHSA-2017:2452",
            "tags": [
              "vendor-advisory",
              "x_refsource_REDHAT",
              "x_transferred"
            ],
            "url": "https://access.redhat.com/errata/RHSA-2017:2452"
          },
          {
            "name": "RHSA-2017:2449",
            "tags": [
              "vendor-advisory",
              "x_refsource_REDHAT",
              "x_transferred"
            ],
            "url": "https://access.redhat.com/errata/RHSA-2017:2449"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "openstack-neutron",
          "vendor": "Red Hat",
          "versions": [
            {
              "status": "affected",
              "version": "openstack-neutron-10.0.2-1.1"
            },
            {
              "status": "affected",
              "version": "openstack-neutron-8.3.0-11.1"
            },
            {
              "status": "affected",
              "version": "openstack-neutron-9.3.1-2.1"
            },
            {
              "status": "affected",
              "version": "openstack-neutron-7.2.0-12.1"
            }
          ]
        }
      ],
      "datePublic": "2017-07-21T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "A race-condition flaw was discovered in openstack-neutron before 7.2.0-12.1, 8.x before 8.3.0-11.1, 9.x before 9.3.1-2.1, and 10.x before 10.0.2-1.1, where, following a minor overcloud update, neutron security groups were disabled. Specifically, the following were reset to 0: net.bridge.bridge-nf-call-ip6tables and net.bridge.bridge-nf-call-iptables. The race was only triggered by an update, at which point an attacker could access exposed tenant VMs and network resources."
        }
      ],
      "metrics": [
        {
          "cvssV3_0": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N",
            "version": "3.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-362",
              "description": "CWE-362",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2018-07-27T09:57:01.000Z",
        "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "shortName": "redhat"
      },
      "references": [
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7543"
        },
        {
          "name": "RHSA-2017:2447",
          "tags": [
            "vendor-advisory",
            "x_refsource_REDHAT"
          ],
          "url": "https://access.redhat.com/errata/RHSA-2017:2447"
        },
        {
          "name": "RHSA-2017:2451",
          "tags": [
            "vendor-advisory",
            "x_refsource_REDHAT"
          ],
          "url": "https://access.redhat.com/errata/RHSA-2017:2451"
        },
        {
          "name": "RHSA-2017:2450",
          "tags": [
            "vendor-advisory",
            "x_refsource_REDHAT"
          ],
          "url": "https://access.redhat.com/errata/RHSA-2017:2450"
        },
        {
          "name": "RHSA-2017:2448",
          "tags": [
            "vendor-advisory",
            "x_refsource_REDHAT"
          ],
          "url": "https://access.redhat.com/errata/RHSA-2017:2448"
        },
        {
          "name": "100237",
          "tags": [
            "vdb-entry",
            "x_refsource_BID"
          ],
          "url": "http://www.securityfocus.com/bid/100237"
        },
        {
          "name": "RHSA-2017:2452",
          "tags": [
            "vendor-advisory",
            "x_refsource_REDHAT"
          ],
          "url": "https://access.redhat.com/errata/RHSA-2017:2452"
        },
        {
          "name": "RHSA-2017:2449",
          "tags": [
            "vendor-advisory",
            "x_refsource_REDHAT"
          ],
          "url": "https://access.redhat.com/errata/RHSA-2017:2449"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
    "assignerShortName": "redhat",
    "cveId": "CVE-2017-7543",
    "datePublished": "2018-07-26T14:00:00.000Z",
    "dateReserved": "2017-04-05T00:00:00.000Z",
    "dateUpdated": "2024-08-05T16:04:11.998Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.