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CVE-2020-8623 (GCVE-0-2020-8623)

Vulnerability from cvelistv5 – Published: 2020-08-21 20:50 – Updated: 2024-09-17 03:19
VLAI
Title
A flaw in native PKCS#11 code can lead to a remotely triggerable assertion failure in pk11.c
Summary
In BIND 9.10.0 -> 9.11.21, 9.12.0 -> 9.16.5, 9.17.0 -> 9.17.3, also affects 9.10.5-S1 -> 9.11.21-S1 of the BIND 9 Supported Preview Edition, An attacker that can reach a vulnerable system with a specially crafted query packet can trigger a crash. To be vulnerable, the system must: * be running BIND that was built with "--enable-native-pkcs11" * be signing one or more zones with an RSA key * be able to receive queries from a possible attacker
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • If BIND is built with "--enable-native-pkcs11" then a specially crafted query for a zone signed with RSA can trigger an assertion failure. Affects BIND 9.10.0 -> 9.11.21, 9.12.0 -> 9.16.5, 9.17.0 -> 9.17.3, also affects 9.10.5-S1 -> 9.11.21-S1 of the BIND 9 Supported Preview Edition
Assigner
References
Impacted products
Vendor Product Version CPE status
ISC BIND9 Affected: 9.10.0 , < 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: 9.10.5-S1 , < Supported Preview* (custom)
guessed Create a notification for this product.
Date Public
2020-08-20 00:00
Credits
ISC would like to thank Lyu Chiy for bringing this vulnerability to our attention.
Show details on NVD website
To clipboard 

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      "descriptions": "[{\"lang\": \"en\", \"value\": \"In BIND 9.10.0 -\u003e 9.11.21, 9.12.0 -\u003e 9.16.5, 9.17.0 -\u003e 9.17.3, also affects 9.10.5-S1 -\u003e 9.11.21-S1 of the BIND 9 Supported Preview Edition, An attacker that can reach a vulnerable system with a specially crafted query packet can trigger a crash. To be vulnerable, the system must: * be running BIND that was built with \\\"--enable-native-pkcs11\\\" * be signing one or more zones with an RSA key * be able to receive queries from a possible attacker\"}, {\"lang\": \"es\", \"value\": \"En BIND versiones 9.10.0 -) 9.11.21, 9.12.0 -) 9.16.5, 9.17.0 -) 9.17.3, tambi\\u00e9n afecta a versiones 9.10.5-S1 -) 9.11.21-S1 de BIND 9 Supported Preview Edition, un atacante que puede llegar a un sistema vulnerable con un paquete de consulta especialmente dise\\u00f1ado puede desencadenar un bloqueo. Para ser vulnerable, el sistema debe: * estar ejecutando BIND que fue creado con \\\"--enable-native-pkcs11\\\" * estar firmando una o m\\u00e1s zonas con una clave RSA * ser capaz de recibir consultas de un posible atacante\"}]",
      "id": "CVE-2020-8623",
      "lastModified": "2024-11-21T05:39:08.767",
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      "published": "2020-08-21T21:15:12.327",
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      "sourceIdentifier": "security-officer@isc.org",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-617\"}]}]"
    },
    "microsoft_vex": {
      "current_release_date": "2020-08-26T00:00:00.000Z",
      "cve": "CVE-2020-8623",
      "id": "msrc_CVE-2020-8623",
      "initial_release_date": "2020-08-02T00:00:00.000Z",
      "product_status:fixed": "1",
      "product_status:known_affected": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "A flaw in native PKCS#11 code can lead to a remotely triggerable assertion failure in pk11.c",
      "url": "https://msrc.microsoft.com/csaf/vex/2020/msrc_cve-2020-8623.json",
      "version": "1"
    },
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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://www.debian.org/security/2020/dsa-4752\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://www.synology.com/security/advisory/Synology_SA_20_19\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2025-11-21T14:51:27+00:00",
      "cve": "CVE-2020-8623",
      "id": "CVE-2020-8623",
      "initial_release_date": "2020-08-20T00:00:00+00:00",
      "product_status:fixed": "1739",
      "product_status:known_not_affected": "9",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "bind: remotely triggerable assertion failure in pk11.c",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2020/cve-2020-8623.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2026-09-13T00:06:42Z",
      "cve": "CVE-2020-8623",
      "id": "CVE-2020-8623",
      "initial_release_date": "2023-02-15T04:01:09Z",
      "product_status:known_affected": "320",
      "product_status:known_not_affected": "156",
      "product_status:recommended": "989",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2020-8623",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2020-8623.json",
      "version": "38"
    }
  }
}



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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.