RHSA-2020:1167
Vulnerability from csaf_redhat
Published
2020-03-31 19:59
Modified
2024-11-15 04:18
Summary
Red Hat Security Advisory: nbdkit security and bug fix update

Notes

Topic
An update for nbdkit is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Low. 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
Network Block Device (NBD) is a protocol for accessing hard disks and other disk-like devices over the network. The nbdkit toolkit utilizes NBD to create servers with minimal dependencies. The package contains plug-in support for the C and Python programming languages. Security Fix(es): * nbdkit: denial of service due to premature opening of back-end connection (CVE-2019-14850) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Additional Changes: For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.8 Release Notes linked from the References section.
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.


To clipboard 

{
  "document": {
    "aggregate_severity": {
      "namespace": "https://access.redhat.com/security/updates/classification/",
      "text": "Low"
    },
    "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 nbdkit is now available for Red Hat Enterprise Linux 7.\n\nRed Hat Product Security has rated this update as having a security impact of Low. 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": "Network Block Device (NBD) is a protocol for accessing hard disks and other disk-like devices over the network. The nbdkit toolkit utilizes NBD to create servers with minimal dependencies. The package contains plug-in support for the C and Python programming languages.\n\nSecurity Fix(es):\n\n* nbdkit: denial of service due to premature opening of back-end connection (CVE-2019-14850)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n\nAdditional Changes:\n\nFor detailed information on changes in this release, see the Red Hat Enterprise Linux 7.8 Release Notes linked from the References section.",
        "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-2020:1167",
        "url": "https://access.redhat.com/errata/RHSA-2020:1167"
      },
      {
        "category": "external",
        "summary": "https://access.redhat.com/security/updates/classification/#low",
        "url": "https://access.redhat.com/security/updates/classification/#low"
      },
      {
        "category": "external",
        "summary": "https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/7.8_release_notes/index",
        "url": "https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/7.8_release_notes/index"
      },
      {
        "category": "external",
        "summary": "1724242",
        "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1724242"
      },
      {
        "category": "external",
        "summary": "1757258",
        "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1757258"
      },
      {
        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2020/rhsa-2020_1167.json"
      }
    ],
    "title": "Red Hat Security Advisory: nbdkit security and bug fix update",
    "tracking": {
      "current_release_date": "2024-11-15T04:18:14+00:00",
      "generator": {
        "date": "2024-11-15T04:18:14+00:00",
        "engine": {
          "name": "Red Hat SDEngine",
          "version": "4.2.1"
        }
      },
      "id": "RHSA-2020:1167",
      "initial_release_date": "2020-03-31T19:59:47+00:00",
      "revision_history": [
        {
          "date": "2020-03-31T19:59:47+00:00",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2020-03-31T19:59:47+00:00",
          "number": "2",
          "summary": "Last updated version"
        },
        {
          "date": "2024-11-15T04:18:14+00:00",
          "number": "3",
          "summary": "Last generated version"
        }
      ],
      "status": "final",
      "version": "3"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_name",
                "name": "Red Hat Enterprise Linux Server (v. 7)",
                "product": {
                  "name": "Red Hat Enterprise Linux Server (v. 7)",
                  "product_id": "7Server-7.8",
                  "product_identification_helper": {
                    "cpe": "cpe:/o:redhat:enterprise_linux:7::server"
                  }
                }
              },
              {
                "category": "product_name",
                "name": "Red Hat Enterprise Linux Server Optional (v. 7)",
                "product": {
                  "name": "Red Hat Enterprise Linux Server Optional (v. 7)",
                  "product_id": "7Server-optional-7.8",
                  "product_identification_helper": {
                    "cpe": "cpe:/o:redhat:enterprise_linux:7::server"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "Red Hat Enterprise Linux"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "nbdkit-basic-plugins-0:1.8.0-3.el7.x86_64",
                "product": {
                  "name": "nbdkit-basic-plugins-0:1.8.0-3.el7.x86_64",
                  "product_id": "nbdkit-basic-plugins-0:1.8.0-3.el7.x86_64",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/nbdkit-basic-plugins@1.8.0-3.el7?arch=x86_64"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "nbdkit-devel-0:1.8.0-3.el7.x86_64",
                "product": {
                  "name": "nbdkit-devel-0:1.8.0-3.el7.x86_64",
                  "product_id": "nbdkit-devel-0:1.8.0-3.el7.x86_64",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/nbdkit-devel@1.8.0-3.el7?arch=x86_64"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "nbdkit-example-plugins-0:1.8.0-3.el7.x86_64",
                "product": {
                  "name": "nbdkit-example-plugins-0:1.8.0-3.el7.x86_64",
                  "product_id": "nbdkit-example-plugins-0:1.8.0-3.el7.x86_64",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/nbdkit-example-plugins@1.8.0-3.el7?arch=x86_64"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "nbdkit-debuginfo-0:1.8.0-3.el7.x86_64",
                "product": {
                  "name": "nbdkit-debuginfo-0:1.8.0-3.el7.x86_64",
                  "product_id": "nbdkit-debuginfo-0:1.8.0-3.el7.x86_64",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/nbdkit-debuginfo@1.8.0-3.el7?arch=x86_64"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "nbdkit-0:1.8.0-3.el7.x86_64",
                "product": {
                  "name": "nbdkit-0:1.8.0-3.el7.x86_64",
                  "product_id": "nbdkit-0:1.8.0-3.el7.x86_64",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/nbdkit@1.8.0-3.el7?arch=x86_64"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "nbdkit-plugin-python-common-0:1.8.0-3.el7.x86_64",
                "product": {
                  "name": "nbdkit-plugin-python-common-0:1.8.0-3.el7.x86_64",
                  "product_id": "nbdkit-plugin-python-common-0:1.8.0-3.el7.x86_64",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/nbdkit-plugin-python-common@1.8.0-3.el7?arch=x86_64"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "nbdkit-plugin-python2-0:1.8.0-3.el7.x86_64",
                "product": {
                  "name": "nbdkit-plugin-python2-0:1.8.0-3.el7.x86_64",
                  "product_id": "nbdkit-plugin-python2-0:1.8.0-3.el7.x86_64",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/nbdkit-plugin-python2@1.8.0-3.el7?arch=x86_64"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "nbdkit-plugin-vddk-0:1.8.0-3.el7.x86_64",
                "product": {
                  "name": "nbdkit-plugin-vddk-0:1.8.0-3.el7.x86_64",
                  "product_id": "nbdkit-plugin-vddk-0:1.8.0-3.el7.x86_64",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/nbdkit-plugin-vddk@1.8.0-3.el7?arch=x86_64"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "x86_64"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "nbdkit-0:1.8.0-3.el7.src",
                "product": {
                  "name": "nbdkit-0:1.8.0-3.el7.src",
                  "product_id": "nbdkit-0:1.8.0-3.el7.src",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/nbdkit@1.8.0-3.el7?arch=src"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "src"
          }
        ],
        "category": "vendor",
        "name": "Red Hat"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "nbdkit-0:1.8.0-3.el7.src as a component of Red Hat Enterprise Linux Server (v. 7)",
          "product_id": "7Server-7.8:nbdkit-0:1.8.0-3.el7.src"
        },
        "product_reference": "nbdkit-0:1.8.0-3.el7.src",
        "relates_to_product_reference": "7Server-7.8"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "nbdkit-0:1.8.0-3.el7.x86_64 as a component of Red Hat Enterprise Linux Server (v. 7)",
          "product_id": "7Server-7.8:nbdkit-0:1.8.0-3.el7.x86_64"
        },
        "product_reference": "nbdkit-0:1.8.0-3.el7.x86_64",
        "relates_to_product_reference": "7Server-7.8"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "nbdkit-basic-plugins-0:1.8.0-3.el7.x86_64 as a component of Red Hat Enterprise Linux Server (v. 7)",
          "product_id": "7Server-7.8:nbdkit-basic-plugins-0:1.8.0-3.el7.x86_64"
        },
        "product_reference": "nbdkit-basic-plugins-0:1.8.0-3.el7.x86_64",
        "relates_to_product_reference": "7Server-7.8"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "nbdkit-debuginfo-0:1.8.0-3.el7.x86_64 as a component of Red Hat Enterprise Linux Server (v. 7)",
          "product_id": "7Server-7.8:nbdkit-debuginfo-0:1.8.0-3.el7.x86_64"
        },
        "product_reference": "nbdkit-debuginfo-0:1.8.0-3.el7.x86_64",
        "relates_to_product_reference": "7Server-7.8"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "nbdkit-devel-0:1.8.0-3.el7.x86_64 as a component of Red Hat Enterprise Linux Server (v. 7)",
          "product_id": "7Server-7.8:nbdkit-devel-0:1.8.0-3.el7.x86_64"
        },
        "product_reference": "nbdkit-devel-0:1.8.0-3.el7.x86_64",
        "relates_to_product_reference": "7Server-7.8"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "nbdkit-example-plugins-0:1.8.0-3.el7.x86_64 as a component of Red Hat Enterprise Linux Server (v. 7)",
          "product_id": "7Server-7.8:nbdkit-example-plugins-0:1.8.0-3.el7.x86_64"
        },
        "product_reference": "nbdkit-example-plugins-0:1.8.0-3.el7.x86_64",
        "relates_to_product_reference": "7Server-7.8"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "nbdkit-plugin-python-common-0:1.8.0-3.el7.x86_64 as a component of Red Hat Enterprise Linux Server (v. 7)",
          "product_id": "7Server-7.8:nbdkit-plugin-python-common-0:1.8.0-3.el7.x86_64"
        },
        "product_reference": "nbdkit-plugin-python-common-0:1.8.0-3.el7.x86_64",
        "relates_to_product_reference": "7Server-7.8"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "nbdkit-plugin-python2-0:1.8.0-3.el7.x86_64 as a component of Red Hat Enterprise Linux Server (v. 7)",
          "product_id": "7Server-7.8:nbdkit-plugin-python2-0:1.8.0-3.el7.x86_64"
        },
        "product_reference": "nbdkit-plugin-python2-0:1.8.0-3.el7.x86_64",
        "relates_to_product_reference": "7Server-7.8"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "nbdkit-plugin-vddk-0:1.8.0-3.el7.x86_64 as a component of Red Hat Enterprise Linux Server (v. 7)",
          "product_id": "7Server-7.8:nbdkit-plugin-vddk-0:1.8.0-3.el7.x86_64"
        },
        "product_reference": "nbdkit-plugin-vddk-0:1.8.0-3.el7.x86_64",
        "relates_to_product_reference": "7Server-7.8"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "nbdkit-0:1.8.0-3.el7.src as a component of Red Hat Enterprise Linux Server Optional (v. 7)",
          "product_id": "7Server-optional-7.8:nbdkit-0:1.8.0-3.el7.src"
        },
        "product_reference": "nbdkit-0:1.8.0-3.el7.src",
        "relates_to_product_reference": "7Server-optional-7.8"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "nbdkit-0:1.8.0-3.el7.x86_64 as a component of Red Hat Enterprise Linux Server Optional (v. 7)",
          "product_id": "7Server-optional-7.8:nbdkit-0:1.8.0-3.el7.x86_64"
        },
        "product_reference": "nbdkit-0:1.8.0-3.el7.x86_64",
        "relates_to_product_reference": "7Server-optional-7.8"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "nbdkit-basic-plugins-0:1.8.0-3.el7.x86_64 as a component of Red Hat Enterprise Linux Server Optional (v. 7)",
          "product_id": "7Server-optional-7.8:nbdkit-basic-plugins-0:1.8.0-3.el7.x86_64"
        },
        "product_reference": "nbdkit-basic-plugins-0:1.8.0-3.el7.x86_64",
        "relates_to_product_reference": "7Server-optional-7.8"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "nbdkit-debuginfo-0:1.8.0-3.el7.x86_64 as a component of Red Hat Enterprise Linux Server Optional (v. 7)",
          "product_id": "7Server-optional-7.8:nbdkit-debuginfo-0:1.8.0-3.el7.x86_64"
        },
        "product_reference": "nbdkit-debuginfo-0:1.8.0-3.el7.x86_64",
        "relates_to_product_reference": "7Server-optional-7.8"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "nbdkit-devel-0:1.8.0-3.el7.x86_64 as a component of Red Hat Enterprise Linux Server Optional (v. 7)",
          "product_id": "7Server-optional-7.8:nbdkit-devel-0:1.8.0-3.el7.x86_64"
        },
        "product_reference": "nbdkit-devel-0:1.8.0-3.el7.x86_64",
        "relates_to_product_reference": "7Server-optional-7.8"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "nbdkit-example-plugins-0:1.8.0-3.el7.x86_64 as a component of Red Hat Enterprise Linux Server Optional (v. 7)",
          "product_id": "7Server-optional-7.8:nbdkit-example-plugins-0:1.8.0-3.el7.x86_64"
        },
        "product_reference": "nbdkit-example-plugins-0:1.8.0-3.el7.x86_64",
        "relates_to_product_reference": "7Server-optional-7.8"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "nbdkit-plugin-python-common-0:1.8.0-3.el7.x86_64 as a component of Red Hat Enterprise Linux Server Optional (v. 7)",
          "product_id": "7Server-optional-7.8:nbdkit-plugin-python-common-0:1.8.0-3.el7.x86_64"
        },
        "product_reference": "nbdkit-plugin-python-common-0:1.8.0-3.el7.x86_64",
        "relates_to_product_reference": "7Server-optional-7.8"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "nbdkit-plugin-python2-0:1.8.0-3.el7.x86_64 as a component of Red Hat Enterprise Linux Server Optional (v. 7)",
          "product_id": "7Server-optional-7.8:nbdkit-plugin-python2-0:1.8.0-3.el7.x86_64"
        },
        "product_reference": "nbdkit-plugin-python2-0:1.8.0-3.el7.x86_64",
        "relates_to_product_reference": "7Server-optional-7.8"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "nbdkit-plugin-vddk-0:1.8.0-3.el7.x86_64 as a component of Red Hat Enterprise Linux Server Optional (v. 7)",
          "product_id": "7Server-optional-7.8:nbdkit-plugin-vddk-0:1.8.0-3.el7.x86_64"
        },
        "product_reference": "nbdkit-plugin-vddk-0:1.8.0-3.el7.x86_64",
        "relates_to_product_reference": "7Server-optional-7.8"
      }
    ]
  },
  "vulnerabilities": [
    {
      "acknowledgments": [
        {
          "names": [
            "Richard W. M. Jones"
          ],
          "organization": "Red Hat",
          "summary": "This issue was discovered by Red Hat."
        }
      ],
      "cve": "CVE-2019-14850",
      "cwe": {
        "id": "CWE-406",
        "name": "Insufficient Control of Network Message Volume (Network Amplification)"
      },
      "discovery_date": "2019-09-11T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1757258"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A denial of service vulnerability was discovered in nbdkit. An attacker could connect to the nbdkit service and cause it to perform a large amount of work in initializing backend plugins, by simply opening a connection to the service. This vulnerability could cause resource consumption and degradation of service in nbdkit, depending on the plugins configured on the server-side.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "nbdkit: denial of service due to premature opening of back-end connection",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "Red Hat Virtualization Host includes nbdkit as a dependency of libguestfs, and uses it in p2v/v2v migrations. libguestfs uses nbdkit with a Unix domain socket only, so this vulnerability is not exposed to untrusted users.\n\nRed Hat Virtualization 4.2 EUS includes a vulnerable version of nbdkit, however it is used only on the Hypervisor with a Unix domain socket, so this vulnerability is not exposed to untrusted users.",
          "title": "Statement"
        },
        {
          "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-7.8:nbdkit-0:1.8.0-3.el7.src",
          "7Server-7.8:nbdkit-0:1.8.0-3.el7.x86_64",
          "7Server-7.8:nbdkit-basic-plugins-0:1.8.0-3.el7.x86_64",
          "7Server-7.8:nbdkit-debuginfo-0:1.8.0-3.el7.x86_64",
          "7Server-7.8:nbdkit-devel-0:1.8.0-3.el7.x86_64",
          "7Server-7.8:nbdkit-example-plugins-0:1.8.0-3.el7.x86_64",
          "7Server-7.8:nbdkit-plugin-python-common-0:1.8.0-3.el7.x86_64",
          "7Server-7.8:nbdkit-plugin-python2-0:1.8.0-3.el7.x86_64",
          "7Server-7.8:nbdkit-plugin-vddk-0:1.8.0-3.el7.x86_64",
          "7Server-optional-7.8:nbdkit-0:1.8.0-3.el7.src",
          "7Server-optional-7.8:nbdkit-0:1.8.0-3.el7.x86_64",
          "7Server-optional-7.8:nbdkit-basic-plugins-0:1.8.0-3.el7.x86_64",
          "7Server-optional-7.8:nbdkit-debuginfo-0:1.8.0-3.el7.x86_64",
          "7Server-optional-7.8:nbdkit-devel-0:1.8.0-3.el7.x86_64",
          "7Server-optional-7.8:nbdkit-example-plugins-0:1.8.0-3.el7.x86_64",
          "7Server-optional-7.8:nbdkit-plugin-python-common-0:1.8.0-3.el7.x86_64",
          "7Server-optional-7.8:nbdkit-plugin-python2-0:1.8.0-3.el7.x86_64",
          "7Server-optional-7.8:nbdkit-plugin-vddk-0:1.8.0-3.el7.x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2019-14850"
        },
        {
          "category": "external",
          "summary": "RHBZ#1757258",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1757258"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2019-14850",
          "url": "https://www.cve.org/CVERecord?id=CVE-2019-14850"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2019-14850",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-14850"
        },
        {
          "category": "external",
          "summary": "https://www.redhat.com/archives/libguestfs/2019-September/msg00084.html",
          "url": "https://www.redhat.com/archives/libguestfs/2019-September/msg00084.html"
        }
      ],
      "release_date": "2019-09-20T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2020-03-31T19:59:47+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-7.8:nbdkit-0:1.8.0-3.el7.src",
            "7Server-7.8:nbdkit-0:1.8.0-3.el7.x86_64",
            "7Server-7.8:nbdkit-basic-plugins-0:1.8.0-3.el7.x86_64",
            "7Server-7.8:nbdkit-debuginfo-0:1.8.0-3.el7.x86_64",
            "7Server-7.8:nbdkit-devel-0:1.8.0-3.el7.x86_64",
            "7Server-7.8:nbdkit-example-plugins-0:1.8.0-3.el7.x86_64",
            "7Server-7.8:nbdkit-plugin-python-common-0:1.8.0-3.el7.x86_64",
            "7Server-7.8:nbdkit-plugin-python2-0:1.8.0-3.el7.x86_64",
            "7Server-7.8:nbdkit-plugin-vddk-0:1.8.0-3.el7.x86_64",
            "7Server-optional-7.8:nbdkit-0:1.8.0-3.el7.src",
            "7Server-optional-7.8:nbdkit-0:1.8.0-3.el7.x86_64",
            "7Server-optional-7.8:nbdkit-basic-plugins-0:1.8.0-3.el7.x86_64",
            "7Server-optional-7.8:nbdkit-debuginfo-0:1.8.0-3.el7.x86_64",
            "7Server-optional-7.8:nbdkit-devel-0:1.8.0-3.el7.x86_64",
            "7Server-optional-7.8:nbdkit-example-plugins-0:1.8.0-3.el7.x86_64",
            "7Server-optional-7.8:nbdkit-plugin-python-common-0:1.8.0-3.el7.x86_64",
            "7Server-optional-7.8:nbdkit-plugin-python2-0:1.8.0-3.el7.x86_64",
            "7Server-optional-7.8:nbdkit-plugin-vddk-0:1.8.0-3.el7.x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2020:1167"
        },
        {
          "category": "workaround",
          "details": "This attack is only possible if nbdkit is configured with a plugin that does a lot of work in its initial .open() callback. Some examples that do a lot of work are nbdkit-ssh-plugin and nbdkit-guestfs-plugin. The nbdkit-memory-plugin is an example that does very little work, and thus is not subject to this vulnerability.\n\nOnly attackers that can connect to the nbdkit service can exploit this vulnerability. If nbdkit is not exposed over TCP (eg, nbdkit -U), or is bound only to a private network interface, or is protected by firewall rules, the attack surface is correspondingly limited.",
          "product_ids": [
            "7Server-7.8:nbdkit-0:1.8.0-3.el7.src",
            "7Server-7.8:nbdkit-0:1.8.0-3.el7.x86_64",
            "7Server-7.8:nbdkit-basic-plugins-0:1.8.0-3.el7.x86_64",
            "7Server-7.8:nbdkit-debuginfo-0:1.8.0-3.el7.x86_64",
            "7Server-7.8:nbdkit-devel-0:1.8.0-3.el7.x86_64",
            "7Server-7.8:nbdkit-example-plugins-0:1.8.0-3.el7.x86_64",
            "7Server-7.8:nbdkit-plugin-python-common-0:1.8.0-3.el7.x86_64",
            "7Server-7.8:nbdkit-plugin-python2-0:1.8.0-3.el7.x86_64",
            "7Server-7.8:nbdkit-plugin-vddk-0:1.8.0-3.el7.x86_64",
            "7Server-optional-7.8:nbdkit-0:1.8.0-3.el7.src",
            "7Server-optional-7.8:nbdkit-0:1.8.0-3.el7.x86_64",
            "7Server-optional-7.8:nbdkit-basic-plugins-0:1.8.0-3.el7.x86_64",
            "7Server-optional-7.8:nbdkit-debuginfo-0:1.8.0-3.el7.x86_64",
            "7Server-optional-7.8:nbdkit-devel-0:1.8.0-3.el7.x86_64",
            "7Server-optional-7.8:nbdkit-example-plugins-0:1.8.0-3.el7.x86_64",
            "7Server-optional-7.8:nbdkit-plugin-python-common-0:1.8.0-3.el7.x86_64",
            "7Server-optional-7.8:nbdkit-plugin-python2-0:1.8.0-3.el7.x86_64",
            "7Server-optional-7.8:nbdkit-plugin-vddk-0:1.8.0-3.el7.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 3.7,
            "baseSeverity": "LOW",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L",
            "version": "3.0"
          },
          "products": [
            "7Server-7.8:nbdkit-0:1.8.0-3.el7.src",
            "7Server-7.8:nbdkit-0:1.8.0-3.el7.x86_64",
            "7Server-7.8:nbdkit-basic-plugins-0:1.8.0-3.el7.x86_64",
            "7Server-7.8:nbdkit-debuginfo-0:1.8.0-3.el7.x86_64",
            "7Server-7.8:nbdkit-devel-0:1.8.0-3.el7.x86_64",
            "7Server-7.8:nbdkit-example-plugins-0:1.8.0-3.el7.x86_64",
            "7Server-7.8:nbdkit-plugin-python-common-0:1.8.0-3.el7.x86_64",
            "7Server-7.8:nbdkit-plugin-python2-0:1.8.0-3.el7.x86_64",
            "7Server-7.8:nbdkit-plugin-vddk-0:1.8.0-3.el7.x86_64",
            "7Server-optional-7.8:nbdkit-0:1.8.0-3.el7.src",
            "7Server-optional-7.8:nbdkit-0:1.8.0-3.el7.x86_64",
            "7Server-optional-7.8:nbdkit-basic-plugins-0:1.8.0-3.el7.x86_64",
            "7Server-optional-7.8:nbdkit-debuginfo-0:1.8.0-3.el7.x86_64",
            "7Server-optional-7.8:nbdkit-devel-0:1.8.0-3.el7.x86_64",
            "7Server-optional-7.8:nbdkit-example-plugins-0:1.8.0-3.el7.x86_64",
            "7Server-optional-7.8:nbdkit-plugin-python-common-0:1.8.0-3.el7.x86_64",
            "7Server-optional-7.8:nbdkit-plugin-python2-0:1.8.0-3.el7.x86_64",
            "7Server-optional-7.8:nbdkit-plugin-vddk-0:1.8.0-3.el7.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Low"
        }
      ],
      "title": "nbdkit: denial of service due to premature opening of back-end connection"
    }
  ]
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.