CVE-2022-3094
Vulnerability from cvelistv5
Published
2023-01-25 21:34
Modified
2024-08-03 01:00
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
An UPDATE message flood may cause named to exhaust all available memory
References
security-officer@isc.orghttps://kb.isc.org/docs/cve-2022-3094Vendor Advisory
Impacted products
ISCBIND 9
Show details on NVD website

To clipboard 

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              "x_transferred"
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            "url": "https://kb.isc.org/docs/cve-2022-3094"
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        ],
        "title": "CVE Program Container"
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    ],
    "cna": {
      "affected": [
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          "defaultStatus": "unaffected",
          "product": "BIND 9",
          "vendor": "ISC",
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      "credits": [
        {
          "lang": "en",
          "value": "ISC would like to thank Rob Schulhof from Infoblox for bringing this vulnerability to our attention."
        }
      ],
      "datePublic": "2023-01-25T00:00:00Z",
      "descriptions": [
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          "lang": "en",
          "value": "Sending a flood of dynamic DNS updates may cause `named` to allocate large amounts of memory. This, in turn, may cause `named` to exit due to a lack of free memory. We are not aware of any cases where this has been exploited.\n\nMemory is allocated prior to the checking of access permissions (ACLs) and is retained during the processing of a dynamic update from a client whose access credentials are accepted. Memory allocated to clients that are not permitted to send updates is released immediately upon rejection. The scope of this vulnerability is limited therefore to trusted clients who are permitted to make dynamic zone changes.\n\nIf a dynamic update is REFUSED, memory will be released again very quickly. Therefore it is only likely to be possible to degrade or stop `named` by sending a flood of unaccepted dynamic updates comparable in magnitude to a query flood intended to achieve the same detrimental outcome.\n\nBIND 9.11 and earlier branches are also affected, but through exhaustion of internal resources rather than memory constraints. This may reduce performance but should not be a significant problem for most servers. Therefore we don\u0027t intend to address this for BIND versions prior to BIND 9.16.\nThis issue affects BIND 9 versions 9.16.0 through 9.16.36, 9.18.0 through 9.18.10, 9.19.0 through 9.19.8, and 9.16.8-S1 through 9.16.36-S1."
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        "discovery": "EXTERNAL"
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      "title": "An UPDATE message flood may cause named to exhaust all available memory",
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    "dateReserved": "2022-09-02T10:25:47.183Z",
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Esto, a su vez, puede provocar que \\\"\\\"named\\\"\\\" se cierre debido a la falta de memoria libre.\\n\\nNo conocemos ning\u00fan caso en el que esto haya sido explotado. La memoria se asigna antes de verificar los permisos de acceso (ACL) y se retiene durante el procesamiento de una actualizaci\u00f3n din\u00e1mica de un cliente cuyas credenciales de acceso se aceptan. La memoria asignada a los clientes a los que no se les permite enviar actualizaciones se libera inmediatamente despu\u00e9s del rechazo. Por lo tanto, el alcance de esta vulnerabilidad se limita a clientes confiables a quienes se les permite realizar cambios de zona din\u00e1micos. \\n\\nSi se RECHAZA una actualizaci\u00f3n din\u00e1mica, la memoria se liberar\u00e1 nuevamente muy r\u00e1pidamente. Por lo tanto, es probable que s\u00f3lo sea posible degradar o detener \\\"\\\"named\\\"\\\" enviando una avalancha de actualizaciones din\u00e1micas no aceptadas comparable en magnitud a una avalancha de consultas destinadas a lograr el mismo resultado perjudicial. \\n\\nBIND 9.11 y ramas anteriores tambi\u00e9n se ven afectadas, pero por el agotamiento de los recursos internos en lugar de por limitaciones de memoria. Esto puede reducir el rendimiento, pero no deber\u00eda ser un problema importante para la mayor\u00eda de los servidores. Por lo tanto, no pretendemos abordar este problema para las versiones de BIND anteriores a BIND 9.16. \\n\\nEste problema afecta a las versiones 9.16.0 a 9.16.36, 9.18.0 a 9.18.10, 9.19.0 a 9.19.8 y 9.16.8-S1 a 9.16.36-S1 de BIND 9.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\",\"baseScore\":7.5,\"baseSeverity\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":3.6},{\"source\":\"security-officer@isc.org\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\",\"baseScore\":7.5,\"baseSeverity\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:*\",\"versionStartIncluding\":\"9.16.0\",\"versionEndExcluding\":\"9.16.37\",\"matchCriteriaId\":\"3D7D78D4-7431-442A-8E69-532822116ED3\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:*\",\"versionStartIncluding\":\"9.18.0\",\"versionEndExcluding\":\"9.18.11\",\"matchCriteriaId\":\"92119B97-ADE6-47C0-B3E2-3B05C08A0B99\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:*\",\"versionStartIncluding\":\"9.19.0\",\"versionEndExcluding\":\"9.19.9\",\"matchCriteriaId\":\"CB820E6D-F56C-4222-A3FF-3A02266FD68B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:isc:bind:9.16.8:s1:*:*:supported_preview:*:*:*\",\"matchCriteriaId\":\"288EAD80-574B-4839-9C2C-81D6D088A733\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:isc:bind:9.16.11:s1:*:*:supported_preview:*:*:*\",\"matchCriteriaId\":\"3595F024-F910-4356-8B5B-D478960FF574\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:isc:bind:9.16.13:s1:*:*:supported_preview:*:*:*\",\"matchCriteriaId\":\"94661BA2-27F8-4FFE-B844-9404F735579D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:isc:bind:9.16.14:s1:*:*:supported_preview:*:*:*\",\"matchCriteriaId\":\"53593603-E2AF-4925-A6E6-109F097A0FF2\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:isc:bind:9.16.21:s1:*:*:supported_preview:*:*:*\",\"matchCriteriaId\":\"751E37C2-8BFD-4306-95C1-8C01CE495FA4\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:isc:bind:9.16.32:s1:*:*:supported_preview:*:*:*\",\"matchCriteriaId\":\"CC432820-F1A2-4132-A673-2620119553C5\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:isc:bind:9.16.36:s1:*:*:supported_preview:*:*:*\",\"matchCriteriaId\":\"F70347F2-6750-4497-B8F4-2036F4F4443A\"}]}]}],\"references\":[{\"url\":\"https://kb.isc.org/docs/cve-2022-3094\",\"source\":\"security-officer@isc.org\",\"tags\":[\"Vendor Advisory\"]}]}}"
  }
}


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