gsd-2021-20267
Vulnerability from gsd
Modified
2023-12-13 01:23
Details
A flaw was found in openstack-neutron's default Open vSwitch firewall rules. By sending carefully crafted packets, anyone in control of a server instance connected to the virtual switch can impersonate the IPv6 addresses of other systems on the network, resulting in denial of service or in some cases possibly interception of traffic intended for other destinations. Only deployments using the Open vSwitch driver are affected. Source: OpenStack project. Versions before openstack-neutron 15.3.3, openstack-neutron 16.3.1 and openstack-neutron 17.1.1 are affected.
Aliases
Aliases
CVE-2021-20267


To clipboard 

{
  "GSD": {
    "alias": "CVE-2021-20267",
    "description": "A flaw was found in openstack-neutron\u0027s default Open vSwitch firewall rules. By sending carefully crafted packets, anyone in control of a server instance connected to the virtual switch can impersonate the IPv6 addresses of other systems on the network, resulting in denial of service or in some cases possibly interception of traffic intended for other destinations. Only deployments using the Open vSwitch driver are affected. Source: OpenStack project. Versions before openstack-neutron 15.3.3, openstack-neutron 16.3.1 and openstack-neutron 17.1.1 are affected.",
    "id": "GSD-2021-20267",
    "references": [
      "https://www.suse.com/security/cve/CVE-2021-20267.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-20267"
      ],
      "details": "A flaw was found in openstack-neutron\u0027s default Open vSwitch firewall rules. By sending carefully crafted packets, anyone in control of a server instance connected to the virtual switch can impersonate the IPv6 addresses of other systems on the network, resulting in denial of service or in some cases possibly interception of traffic intended for other destinations. Only deployments using the Open vSwitch driver are affected. Source: OpenStack project. Versions before openstack-neutron 15.3.3, openstack-neutron 16.3.1 and openstack-neutron 17.1.1 are affected.",
      "id": "GSD-2021-20267",
      "modified": "2023-12-13T01:23:12.251894Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "secalert@redhat.com",
        "ID": "CVE-2021-20267",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "openstack-neutron",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "openstack-neutron 15.3.3, openstack-neutron 16.3.1, openstack-neutron 17.1.1"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "n/a"
            }
          ]
        }
      },
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
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          {
            "lang": "eng",
            "value": "A flaw was found in openstack-neutron\u0027s default Open vSwitch firewall rules. By sending carefully crafted packets, anyone in control of a server instance connected to the virtual switch can impersonate the IPv6 addresses of other systems on the network, resulting in denial of service or in some cases possibly interception of traffic intended for other destinations. Only deployments using the Open vSwitch driver are affected. Source: OpenStack project. Versions before openstack-neutron 15.3.3, openstack-neutron 16.3.1 and openstack-neutron 17.1.1 are affected."
          }
        ]
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "CWE-345"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://bugzilla.redhat.com/show_bug.cgi?id=1934330",
            "refsource": "MISC",
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1934330"
          },
          {
            "name": "https://security.openstack.org/ossa/OSSA-2021-001.html",
            "refsource": "CONFIRM",
            "url": "https://security.openstack.org/ossa/OSSA-2021-001.html"
          }
        ]
      }
    },
    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "\u003c16.3.3||\u003e=17.0.0,\u003c17.1.3||==18.0.0",
          "affected_versions": "All versions before 16.3.3, all versions starting from 17.0.0 before 17.1.3, version 18.0.0",
          "cvss_v2": "AV:N/AC:L/Au:S/C:P/I:N/A:P",
          "cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H",
          "cwe_ids": [
            "CWE-1035",
            "CWE-345",
            "CWE-937"
          ],
          "date": "2022-10-07",
          "description": "A flaw was found in openstack-neutron\u0027s default Open vSwitch firewall rules. By sending carefully crafted packets, anyone in control of a server instance connected to the virtual switch can impersonate the IPv6 addresses of other systems on the network, resulting in denial of service or in some cases possibly interception of traffic intended for other destinations.",
          "fixed_versions": [
            "16.4.0",
            "17.2.0",
            "18.1.0"
          ],
          "identifier": "CVE-2021-20267",
          "identifiers": [
            "CVE-2021-20267"
          ],
          "not_impacted": "All versions starting from 16.3.3 before 17.0.0, all versions starting from 17.1.3 before 18.0.0, all versions after 18.0.0",
          "package_slug": "pypi/neutron",
          "pubdate": "2021-05-28",
          "solution": "Upgrade to versions 16.4.0, 17.2.0, 18.1.0 or above.",
          "title": "Insufficient Verification of Data Authenticity",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2021-20267",
            "https://bugzilla.redhat.com/show_bug.cgi?id=1934330"
          ],
          "uuid": "47fd9aa5-728d-4753-83c9-dea60638009e"
        }
      ]
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:openstack:neutron:18.0.0:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:a:openstack:neutron:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "17.1.3",
                "versionStartIncluding": "17.0.0",
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:a:openstack:neutron:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "16.3.3",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          },
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:redhat:openstack_platform:16.1:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:a:redhat:openstack_platform:13.0:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:a:redhat:openstack_platform:10.0:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:a:redhat:openstack_platform:16.2:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "secalert@redhat.com",
          "ID": "CVE-2021-20267"
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "en",
              "value": "A flaw was found in openstack-neutron\u0027s default Open vSwitch firewall rules. By sending carefully crafted packets, anyone in control of a server instance connected to the virtual switch can impersonate the IPv6 addresses of other systems on the network, resulting in denial of service or in some cases possibly interception of traffic intended for other destinations. Only deployments using the Open vSwitch driver are affected. Source: OpenStack project. Versions before openstack-neutron 15.3.3, openstack-neutron 16.3.1 and openstack-neutron 17.1.1 are affected."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-345"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://bugzilla.redhat.com/show_bug.cgi?id=1934330",
              "refsource": "MISC",
              "tags": [
                "Issue Tracking",
                "Patch",
                "Third Party Advisory"
              ],
              "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1934330"
            },
            {
              "name": "https://security.openstack.org/ossa/OSSA-2021-001.html",
              "refsource": "CONFIRM",
              "tags": [
                "Patch",
                "Vendor Advisory"
              ],
              "url": "https://security.openstack.org/ossa/OSSA-2021-001.html"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "SINGLE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 5.5,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "NONE",
            "vectorString": "AV:N/AC:L/Au:S/C:P/I:N/A:P",
            "version": "2.0"
          },
          "exploitabilityScore": 8.0,
          "impactScore": 4.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 2.8,
          "impactScore": 4.2
        }
      },
      "lastModifiedDate": "2022-10-07T03:00Z",
      "publishedDate": "2021-05-28T19:15Z"
    }
  }
}


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