CVE-2018-5745 (GCVE-0-2018-5745)

Vulnerability from cvelistv5 – Published: 2019-10-09 14:17 – Updated: 2024-09-16 23:51
VLAI
Title
An assertion failure can occur if a trust anchor rolls over to an unsupported key algorithm when using managed-keys
Summary
"managed-keys" is a feature which allows a BIND resolver to automatically maintain the keys used by trust anchors which operators configure for use in DNSSEC validation. Due to an error in the managed-keys feature it is possible for a BIND server which uses managed-keys to exit due to an assertion failure if, during key rollover, a trust anchor's keys are replaced with keys which use an unsupported algorithm. Versions affected: BIND 9.9.0 -> 9.10.8-P1, 9.11.0 -> 9.11.5-P1, 9.12.0 -> 9.12.3-P1, and versions 9.9.3-S1 -> 9.11.5-S3 of BIND 9 Supported Preview Edition. Versions 9.13.0 -> 9.13.6 of the 9.13 development branch are also affected. Versions prior to BIND 9.9.0 have not been evaluated for vulnerability to CVE-2018-5745.
Severity
4.9 (Medium)
CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
CWE
  • This particular vulnerability would be very difficult for an arbitrary attacker to use because it requires an operator to have BIND configured to use a trust anchor managed by the attacker. However, if successfully exercised, the defect will cause named to deliberately exit after encountering an assertion failure. It is more likely, perhaps, that this bug could be encountered accidentally, as not all versions of BIND support the same set of cryptographic algorithms. Specifically, recent branches of BIND have begun deliberately removing support for cryptographic algorithms that are now deprecated (for example because they are no longer considered sufficiently secure.) This vulnerability could be encountered if a resolver running a version of BIND which has removed support for deprecated algorithms is configured to use a trust anchor which elects to change algorithm types to one of those deprecated algorithms. Support for GOST was removed from BIND in 9.13.1. Support for DSA was removed from BIND in 9.13.4 Support for RSAMD5 will be removed from future BIND releases in the 9.13 branch and higher.
Assigner
isc CNA under the mitre root
CNA scorecard A 95/100 over 33 records in the last 180 days details
References
URL Tags
https://kb.isc.org/docs/cve-2018-5745 x_refsource_CONFIRM
https://access.redhat.com/errata/RHSA-2019:3552 vendor-advisoryx_refsource_REDHAT
Impacted products
Vendor Product Version CPE status
ISC BIND 9 Affected: BIND 9.9.0 -> 9.10.8-P1, 9.11.0 -> 9.11.5-P1, 9.12.0 -> 9.12.3-P1, and versions 9.9.3-S1 -> 9.11.5-S3 of BIND 9 Supported Preview Edition. Versions 9.13.0 -> 9.13.6 of the 9.13 development branch are also affected. Versions prior to BIND 9.9.0 have not been evaluated for vulnerability to CVE-2018-5745.
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Date Public
2019-02-21 00:00
Show details on NVD website
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                    "matchCriteriaId": "F59BE241-48B6-47CC-8500-96A8A1E67954",
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                    "vulnerable": true
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                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "\"managed-keys\" is a feature which allows a BIND resolver to automatically maintain the keys used by trust anchors which operators configure for use in DNSSEC validation. Due to an error in the managed-keys feature it is possible for a BIND server which uses managed-keys to exit due to an assertion failure if, during key rollover, a trust anchor\u0027s keys are replaced with keys which use an unsupported algorithm. Versions affected: BIND 9.9.0 -\u003e 9.10.8-P1, 9.11.0 -\u003e 9.11.5-P1, 9.12.0 -\u003e 9.12.3-P1, and versions 9.9.3-S1 -\u003e 9.11.5-S3 of BIND 9 Supported Preview Edition. Versions 9.13.0 -\u003e 9.13.6 of the 9.13 development branch are also affected. Versions prior to BIND 9.9.0 have not been evaluated for vulnerability to CVE-2018-5745."
          },
          {
            "lang": "es",
            "value": "\"managed-keys\" es una caracter\u00edstica que permite a un solucionador BIND mantener autom\u00e1ticamente las claves usadas por los anclajes de confianza que los operadores configuran para su uso en la comprobaci\u00f3n  de DNSSEC. Debido a un error en la funcionalidad managed-keys, es posible que un servidor BIND que utiliza managed-keys salga debido a un error de aserci\u00f3n si, durante la renovaci\u00f3n de claves, las claves de un ancla de confianza son reemplazadas por claves que utilizan un algoritmo no compatible. Versiones afectadas: BIND 9.9.0 hasta 9.10.8-P1, 9.11.0 hasta 9.11.5-P1, 9.12.0 hasta 9.12.3-P1 y versiones 9.9.3-S1 hasta 9.11.5- S3 de BIND 9 Supported Preview Edition. Las versiones 9.13.0 hasta 9.13.6 de la rama de desarrollo 9.13 tambi\u00e9n est\u00e1n afectadas. Las versiones anteriores a BIND 9.9.0 no han sido evaluadas para la vulnerabilidad de CVE-2018-5745."
          }
        ],
        "id": "CVE-2018-5745",
        "lastModified": "2026-09-01T19:44:42.623",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "LOW",
              "cvssData": {
                "accessComplexity": "MEDIUM",
                "accessVector": "NETWORK",
                "authentication": "SINGLE",
                "availabilityImpact": "PARTIAL",
                "baseScore": 3.5,
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "vectorString": "AV:N/AC:M/Au:S/C:N/I:N/A:P",
                "version": "2.0"
              },
              "exploitabilityScore": 6.8,
              "impactScore": 2.9,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": false
            }
          ],
          "cvssMetricV30": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 4.9,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "HIGH",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.0"
              },
              "exploitabilityScore": 1.2,
              "impactScore": 3.6,
              "source": "security-officer@isc.org",
              "type": "Secondary"
            }
          ],
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 4.9,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "HIGH",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.2,
              "impactScore": 3.6,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2019-10-09T16:15:14.000",
        "references": [
          {
            "source": "security-officer@isc.org",
            "url": "https://access.redhat.com/errata/RHSA-2019:3552"
          },
          {
            "source": "security-officer@isc.org",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://kb.isc.org/docs/cve-2018-5745"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://access.redhat.com/errata/RHSA-2019:3552"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://kb.isc.org/docs/cve-2018-5745"
          }
        ],
        "sourceIdentifier": "security-officer@isc.org",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-327"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-09-01T20:21:51+00:00",
      "cve": "CVE-2018-5745",
      "id": "CVE-2018-5745",
      "initial_release_date": "2018-01-01T00:00:00+00:00",
      "product_status:fixed": "358",
      "product_status:known_affected": "7",
      "product_status:known_not_affected": "2",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "bind: An assertion failure if a trust anchor rolls over to an unsupported key algorithm when using managed-keys",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2018/cve-2018-5745.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-10-19T00:10:00Z",
      "cve": "CVE-2018-5745",
      "id": "CVE-2018-5745",
      "initial_release_date": "2023-02-15T04:31:27Z",
      "product_status:known_affected": "442",
      "product_status:known_not_affected": "1",
      "product_status:recommended": "1078",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2018-5745",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/2023/cve-2018-5745.json",
      "version": "38"
    }
  }
}



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