Vulnerability-Lookup

FKIE_CVE-2020-8622

Vulnerability from fkie_nvd - Published: 2020-08-21 21:15 - Updated: 2026-06-17 03:26

Severity

6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Summary

In BIND 9.0.0 -> 9.11.21, 9.12.0 -> 9.16.5, 9.17.0 -> 9.17.3, also affects 9.9.3-S1 -> 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.

References

URL	Tags
security-officer@isc.org	http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00041.html	Mailing List, Third Party Advisory
security-officer@isc.org	http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00044.html	Mailing List, Third Party Advisory
security-officer@isc.org	https://kb.isc.org/docs/cve-2020-8622	Vendor Advisory
security-officer@isc.org	https://lists.debian.org/debian-lts-announce/2020/08/msg00053.html	Mailing List, Third Party Advisory
security-officer@isc.org	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DQN62GBMCIC5AY4KYADGXNKVY6AJKSJE/
security-officer@isc.org	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZKAMJZXR66P6S5LEU4SN7USSNCWTXEXP/
security-officer@isc.org	https://security.gentoo.org/glsa/202008-19	Third Party Advisory
security-officer@isc.org	https://security.netapp.com/advisory/ntap-20200827-0003/	Third Party Advisory
security-officer@isc.org	https://usn.ubuntu.com/4468-1/	Third Party Advisory
security-officer@isc.org	https://usn.ubuntu.com/4468-2/	Third Party Advisory
security-officer@isc.org	https://www.debian.org/security/2020/dsa-4752	Third Party Advisory
security-officer@isc.org	https://www.oracle.com/security-alerts/cpuoct2021.html	Patch, Third Party Advisory
security-officer@isc.org	https://www.synology.com/security/advisory/Synology_SA_20_19	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00041.html	Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00044.html	Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://kb.isc.org/docs/cve-2020-8622	Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108	https://lists.debian.org/debian-lts-announce/2020/08/msg00053.html	Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DQN62GBMCIC5AY4KYADGXNKVY6AJKSJE/
af854a3a-2127-422b-91ae-364da2661108	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZKAMJZXR66P6S5LEU4SN7USSNCWTXEXP/
af854a3a-2127-422b-91ae-364da2661108	https://security.gentoo.org/glsa/202008-19	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://security.netapp.com/advisory/ntap-20200827-0003/	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://usn.ubuntu.com/4468-1/	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://usn.ubuntu.com/4468-2/	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://www.debian.org/security/2020/dsa-4752	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://www.oracle.com/security-alerts/cpuoct2021.html	Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://www.synology.com/security/advisory/Synology_SA_20_19	Third Party Advisory

Impacted products

Vendor	Product	Version
isc	bind	*
isc	bind	*
isc	bind	*
isc	bind	9.9.3
isc	bind	9.11.21
fedoraproject	fedora	31
fedoraproject	fedora	32
debian	debian_linux	9.0
debian	debian_linux	10.0
canonical	ubuntu_linux	12.04
canonical	ubuntu_linux	14.04
canonical	ubuntu_linux	16.04
canonical	ubuntu_linux	18.04
canonical	ubuntu_linux	20.04
netapp	steelstore_cloud_integrated_storage	-
opensuse	leap	15.1
opensuse	leap	15.2
synology	dns_server	*
oracle	communications_diameter_signaling_router	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "BIND9",
          "vendor": "ISC",
          "versions": [
            {
              "lessThan": "unspecified",
              "status": "affected",
              "version": "9.0.0",
              "versionType": "custom"
            },
            {
              "lessThan": "9.11.22",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            },
            {
              "lessThan": "unspecified",
              "status": "affected",
              "version": "9.12.0",
              "versionType": "custom"
            },
            {
              "lessThan": "9.16.6",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            },
            {
              "lessThan": "unspecified",
              "status": "affected",
              "version": "9.17.0",
              "versionType": "custom"
            },
            {
              "lessThan": "9.17.4",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            },
            {
              "changes": [
                {
                  "at": "9.11.22-S1",
                  "status": "unaffected"
                }
              ],
              "lessThan": "Supported Preview*",
              "status": "affected",
              "version": "9.9.3-S1",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "security-officer@isc.org"
    }
  ],
  "configurations": [
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    },
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      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "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."
    },
    {
      "lang": "es",
      "value": "En BIND versiones 9.0.0 -) 9.11.21, 9.12.0 -) 9.16.5, 9.17.0 -) 9.17.3, tambi\u00e9n afecta a versiones 9.9.3-S1 -) 9.11.21-S1 de BIND 9 Supported Preview Edition, un atacante sobre la ruta de la red para una petici\u00f3n firmada por TSIG, u operando el servidor que recibe la petici\u00f3n firmada por TSIG, podr\u00eda enviar una respuesta truncada a esa petici\u00f3n, desencadenando un fallo de aserci\u00f3n y causando que el servidor salga. Alternativamente, un atacante fuera de la ruta tendr\u00eda que adivinar correctamente cu\u00e1ndo fue enviada una petici\u00f3n firmada por TSIG, junto con otras caracter\u00edsticas del paquete y mensaje, y falsificar una respuesta truncada para desencadenar un fallo de aserci\u00f3n, causando la salida del servidor."
    }
  ],
  "id": "CVE-2020-8622",
  "lastModified": "2026-06-17T03:26:39.917",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "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,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "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,
        "source": "security-officer@isc.org",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "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,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2020-08-21T21:15:12.247",
  "references": [
    {
      "source": "security-officer@isc.org",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "url": "http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00041.html"
    },
    {
      "source": "security-officer@isc.org",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "url": "http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00044.html"
    },
    {
      "source": "security-officer@isc.org",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://kb.isc.org/docs/cve-2020-8622"
    },
    {
      "source": "security-officer@isc.org",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "url": "https://lists.debian.org/debian-lts-announce/2020/08/msg00053.html"
    },
    {
      "source": "security-officer@isc.org",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DQN62GBMCIC5AY4KYADGXNKVY6AJKSJE/"
    },
    {
      "source": "security-officer@isc.org",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZKAMJZXR66P6S5LEU4SN7USSNCWTXEXP/"
    },
    {
      "source": "security-officer@isc.org",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://security.gentoo.org/glsa/202008-19"
    },
    {
      "source": "security-officer@isc.org",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://security.netapp.com/advisory/ntap-20200827-0003/"
    },
    {
      "source": "security-officer@isc.org",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://usn.ubuntu.com/4468-1/"
    },
    {
      "source": "security-officer@isc.org",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://usn.ubuntu.com/4468-2/"
    },
    {
      "source": "security-officer@isc.org",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://www.debian.org/security/2020/dsa-4752"
    },
    {
      "source": "security-officer@isc.org",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://www.oracle.com/security-alerts/cpuoct2021.html"
    },
    {
      "source": "security-officer@isc.org",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://www.synology.com/security/advisory/Synology_SA_20_19"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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        "Third Party Advisory"
      ],
      "url": "http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00041.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "url": "http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00044.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://kb.isc.org/docs/cve-2020-8622"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "url": "https://lists.debian.org/debian-lts-announce/2020/08/msg00053.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DQN62GBMCIC5AY4KYADGXNKVY6AJKSJE/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZKAMJZXR66P6S5LEU4SN7USSNCWTXEXP/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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      ],
      "url": "https://security.gentoo.org/glsa/202008-19"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://security.netapp.com/advisory/ntap-20200827-0003/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://usn.ubuntu.com/4468-1/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://usn.ubuntu.com/4468-2/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://www.debian.org/security/2020/dsa-4752"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://www.oracle.com/security-alerts/cpuoct2021.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://www.synology.com/security/advisory/Synology_SA_20_19"
    }
  ],
  "sourceIdentifier": "security-officer@isc.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-617"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2020-8622 (GCVE-0-2020-8622)

Vulnerability from cvelistv5 – Published: 2020-08-21 20:50 – Updated: 2024-09-16 17:14

Title

A truncated TSIG response can lead to an assertion failure

Summary

Severity

6.5 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE

Attempting to verify a truncated response to a TSIG-signed request leads to an assertion failure. Affects BIND 9.0.0 -> 9.11.21, 9.12.0 -> 9.16.5, 9.17.0 -> 9.17.3, also affects 9.9.3-S1 -> 9.11.21-S1 of the BIND 9 Supported Preview Edition

Assigner

isc mitre root

References

13 references

URL	Tags
https://kb.isc.org/docs/cve-2020-8622	x_refsource_CONFIRM
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://usn.ubuntu.com/4468-1/	vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/4468-2/	vendor-advisoryx_refsource_UBUNTU
https://www.debian.org/security/2020/dsa-4752	vendor-advisoryx_refsource_DEBIAN
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://lists.debian.org/debian-lts-announce/2020…	mailing-listx_refsource_MLIST
https://security.gentoo.org/glsa/202008-19	vendor-advisoryx_refsource_GENTOO
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE
https://www.oracle.com/security-alerts/cpuoct2021.html	x_refsource_MISC
https://security.netapp.com/advisory/ntap-2020082…	x_refsource_CONFIRM
https://www.synology.com/security/advisory/Synolo…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
ISC	BIND9	Affected: 9.0.0 , < unspecified (custom) Affected: unspecified , < 9.11.22 (custom) Affected: 9.12.0 , < unspecified (custom) Affected: unspecified , < 9.16.6 (custom) Affected: 9.17.0 , < unspecified (custom) Affected: unspecified , < 9.17.4 (custom) Affected: 9.9.3-S1 , < Supported Preview* (custom)

Date Public

2020-08-20 00:00

Credits

ISC would like to thank Dave Feldman, Jeff Warren, and Joel Cunningham of Oracle for bringing this vulnerability to our attention.

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

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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.
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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.

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.
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FKIE_CVE-2020-8622

CVE-2020-8622 (GCVE-0-2020-8622)

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