{
  "GSD": {
    "alias": "CVE-2020-8622",
    "description": "In BIND 9.0.0 -\u003e 9.11.21, 9.12.0 -\u003e 9.16.5, 9.17.0 -\u003e 9.17.3, also affects 9.9.3-S1 -\u003e 9.11.21-S1 of the BIND 9 Supported Preview Edition, An attacker on the network path for a TSIG-signed request, or operating the server receiving the TSIG-signed request, could send a truncated response to that request, triggering an assertion failure, causing the server to exit. Alternately, an off-path attacker would have to correctly guess when a TSIG-signed request was sent, along with other characteristics of the packet and message, and spoof a truncated response to trigger an assertion failure, causing the server to exit.",
    "id": "GSD-2020-8622",
    "references": [
      "https://www.suse.com/security/cve/CVE-2020-8622.html",
      "https://www.debian.org/security/2020/dsa-4752",
      "https://access.redhat.com/errata/RHSA-2020:5203",
      "https://access.redhat.com/errata/RHSA-2020:5011",
      "https://access.redhat.com/errata/RHSA-2020:4992",
      "https://access.redhat.com/errata/RHSA-2020:4500",
      "https://access.redhat.com/errata/RHSA-2020:4183",
      "https://ubuntu.com/security/CVE-2020-8622",
      "https://advisories.mageia.org/CVE-2020-8622.html",
      "https://alas.aws.amazon.com/cve/html/CVE-2020-8622.html",
      "https://linux.oracle.com/cve/CVE-2020-8622.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2020-8622"
      ],
      "details": "In BIND 9.0.0 -\u003e 9.11.21, 9.12.0 -\u003e 9.16.5, 9.17.0 -\u003e 9.17.3, also affects 9.9.3-S1 -\u003e 9.11.21-S1 of the BIND 9 Supported Preview Edition, An attacker on the network path for a TSIG-signed request, or operating the server receiving the TSIG-signed request, could send a truncated response to that request, triggering an assertion failure, causing the server to exit. Alternately, an off-path attacker would have to correctly guess when a TSIG-signed request was sent, along with other characteristics of the packet and message, and spoof a truncated response to trigger an assertion failure, causing the server to exit.",
      "id": "GSD-2020-8622",
      "modified": "2023-12-13T01:21:54.012280Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "security-officer@isc.org",
        "DATE_PUBLIC": "2020-08-20T18:35:08.000Z",
        "ID": "CVE-2020-8622",
        "STATE": "PUBLIC",
        "TITLE": "A truncated TSIG response can lead to an assertion failure"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "BIND9",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003e=",
                          "version_value": "9.0.0"
                        },
                        {
                          "version_affected": "\u003c",
                          "version_value": "9.11.22"
                        },
                        {
                          "version_affected": "\u003e=",
                          "version_value": "9.12.0"
                        },
                        {
                          "version_affected": "\u003c",
                          "version_value": "9.16.6"
                        },
                        {
                          "version_affected": "\u003e=",
                          "version_value": "9.17.0"
                        },
                        {
                          "version_affected": "\u003c",
                          "version_value": "9.17.4"
                        },
                        {
                          "version_affected": "\u003e=",
                          "version_name": "Supported Preview",
                          "version_value": "9.9.3-S1"
                        },
                        {
                          "version_affected": "\u003c",
                          "version_name": "Supported Preview",
                          "version_value": "9.11.22-S1"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "ISC"
            }
          ]
        }
      },
      "credit": [
        {
          "lang": "eng",
          "value": "ISC would like to thank Dave Feldman, Jeff Warren, and Joel Cunningham of Oracle for bringing this vulnerability to our attention."
        }
      ],
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "value": "In BIND 9.0.0 -\u003e 9.11.21, 9.12.0 -\u003e 9.16.5, 9.17.0 -\u003e 9.17.3, also affects 9.9.3-S1 -\u003e 9.11.21-S1 of the BIND 9 Supported Preview Edition, An attacker on the network path for a TSIG-signed request, or operating the server receiving the TSIG-signed request, could send a truncated response to that request, triggering an assertion failure, causing the server to exit. Alternately, an off-path attacker would have to correctly guess when a TSIG-signed request was sent, along with other characteristics of the packet and message, and spoof a truncated response to trigger an assertion failure, causing the server to exit."
          }
        ]
      },
      "exploit": [
        {
          "lang": "eng",
          "value": "We are not aware of any active exploits"
        }
      ],
      "generator": {
        "engine": "Vulnogram 0.0.9"
      },
      "impact": {
        "cvss": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        }
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "Attempting to verify a truncated response to a TSIG-signed request leads to an assertion failure.  Affects BIND 9.0.0 -\u003e 9.11.21, 9.12.0 -\u003e 9.16.5, 9.17.0 -\u003e 9.17.3, also affects 9.9.3-S1 -\u003e 9.11.21-S1 of the BIND 9 Supported Preview Edition"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://kb.isc.org/docs/cve-2020-8622",
            "refsource": "CONFIRM",
            "url": "https://kb.isc.org/docs/cve-2020-8622"
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          {
            "name": "FEDORA-2020-a02b7a0f21",
            "refsource": "FEDORA",
            "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DQN62GBMCIC5AY4KYADGXNKVY6AJKSJE/"
          },
          {
            "name": "USN-4468-1",
            "refsource": "UBUNTU",
            "url": "https://usn.ubuntu.com/4468-1/"
          },
          {
            "name": "USN-4468-2",
            "refsource": "UBUNTU",
            "url": "https://usn.ubuntu.com/4468-2/"
          },
          {
            "name": "DSA-4752",
            "refsource": "DEBIAN",
            "url": "https://www.debian.org/security/2020/dsa-4752"
          },
          {
            "name": "FEDORA-2020-14c194e5af",
            "refsource": "FEDORA",
            "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZKAMJZXR66P6S5LEU4SN7USSNCWTXEXP/"
          },
          {
            "name": "[debian-lts-announce] 20200829 [SECURITY] [DLA 2355-1] bind9 security update",
            "refsource": "MLIST",
            "url": "https://lists.debian.org/debian-lts-announce/2020/08/msg00053.html"
          },
          {
            "name": "GLSA-202008-19",
            "refsource": "GENTOO",
            "url": "https://security.gentoo.org/glsa/202008-19"
          },
          {
            "name": "openSUSE-SU-2020:1699",
            "refsource": "SUSE",
            "url": "http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00041.html"
          },
          {
            "name": "openSUSE-SU-2020:1701",
            "refsource": "SUSE",
            "url": "http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00044.html"
          },
          {
            "name": "https://www.oracle.com/security-alerts/cpuoct2021.html",
            "refsource": "MISC",
            "url": "https://www.oracle.com/security-alerts/cpuoct2021.html"
          },
          {
            "name": "https://security.netapp.com/advisory/ntap-20200827-0003/",
            "refsource": "CONFIRM",
            "url": "https://security.netapp.com/advisory/ntap-20200827-0003/"
          },
          {
            "name": "https://www.synology.com/security/advisory/Synology_SA_20_19",
            "refsource": "CONFIRM",
            "url": "https://www.synology.com/security/advisory/Synology_SA_20_19"
          }
        ]
      },
      "solution": [
        {
          "lang": "eng",
          "value": "Upgrade to the patched release most closely related to your current version of BIND:\n\n    BIND 9.11.22\n    BIND 9.16.6\n    BIND 9.17.4\n\nBIND Supported Preview Edition is a special feature preview branch of BIND provided to eligible ISC support customers.\n\n    BIND 9.11.22-S1\n"
        }
      ],
      "source": {
        "discovery": "USER"
      },
      "work_around": [
        {
          "lang": "eng",
          "value": "No workarounds known."
        }
      ]
    },
    "nvd.nist.gov": {
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              "lang": "en",
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        "problemtype": {
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              "tags": [
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              "refsource": "UBUNTU",
              "tags": [
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            },
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              "refsource": "FEDORA",
              "tags": [
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                "Third Party Advisory"
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          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "SINGLE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 4.0,
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "vectorString": "AV:N/AC:L/Au:S/C:N/I:N/A:P",
            "version": "2.0"
          },
          "exploitabilityScore": 8.0,
          "impactScore": 2.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 2.8,
          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2021-12-02T22:19Z",
      "publishedDate": "2020-08-21T21:15Z"
    }
  }
}