{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2022-3924", "assignerOrgId": "404fd4d2-a609-4245-b543-2c944a302a22", "state": "PUBLISHED", "assignerShortName": "isc", "dateReserved": "2022-11-10T09:07:37.642Z", "datePublished": "2023-01-25T21:39:49.110Z", "dateUpdated": "2025-03-31T13:58:09.212Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "404fd4d2-a609-4245-b543-2c944a302a22", "shortName": "isc", "dateUpdated": "2023-01-26T06:03:10.975Z"}, "title": "named configured to answer from stale cache may terminate unexpectedly at recursive-clients soft quota", "datePublic": "2023-01-25T00:00:00.000Z", "affected": [{"vendor": "ISC", "product": "BIND 9", "versions": [{"version": "9.16.12", "lessThanOrEqual": "9.16.36", "status": "affected", "versionType": "custom"}, {"version": "9.18.0", "lessThanOrEqual": "9.18.10", "status": "affected", "versionType": "custom"}, {"version": "9.19.0", "lessThanOrEqual": "9.19.8", "status": "affected", "versionType": "custom"}, {"version": "9.16.12-S1", "lessThanOrEqual": "9.16.36-S1", "status": "affected", "versionType": "custom"}], "defaultStatus": "unaffected"}], "metrics": [{"cvssV3_1": {"version": "3.1", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 7.5, "baseSeverity": "HIGH"}}], "descriptions": [{"lang": "en", "value": "This issue can affect BIND 9 resolvers with `stale-answer-enable yes;` that also make use of the option `stale-answer-client-timeout`, configured with a value greater than zero.\n\nIf the resolver receives many queries that require recursion, there will be a corresponding increase in the number of clients that are waiting for recursion to complete. If there are sufficient clients already waiting when a new client query is received so that it is necessary to SERVFAIL the longest waiting client (see BIND 9 ARM `recursive-clients` limit and soft quota), then it is possible for a race to occur between providing a stale answer to this older client and sending an early timeout SERVFAIL, which may cause an assertion failure.\nThis issue affects BIND 9 versions 9.16.12 through 9.16.36, 9.18.0 through 9.18.10, 9.19.0 through 9.19.8, and 9.16.12-S1 through 9.16.36-S1."}], "impacts": [{"descriptions": [{"lang": "en", "value": "By sending specific queries to the resolver, an attacker can cause `named` to crash."}]}], "workarounds": [{"lang": "en", "value": "Disabling `stale-answer-client-timeout` entirely or setting the timeout value to zero prevents the problem.\n\nIt is not possible to disable the limit on `recursive-clients`, though it could be set to a very high value in order to reduce the likelihood of encountering this scenario. However, this is not recommended as the limit on recursive clients is important for preventing exhaustion of server resources."}], "exploits": [{"lang": "en", "value": "We are not aware of any active exploits."}], "solutions": [{"lang": "en", "value": "Upgrade to the patched release most closely related to your current version of BIND 9: 9.16.37, 9.18.11, 9.19.9, or 9.16.37-S1."}], "credits": [{"lang": "en", "value": "ISC would like to thank Maksym Odinintsev from AWS for bringing this vulnerability to our attention."}], "references": [{"url": "https://kb.isc.org/docs/cve-2022-3924", "name": "CVE-2022-3924", "tags": ["vendor-advisory"]}], "source": {"discovery": "EXTERNAL"}, "problemTypes": [{"descriptions": [{"description": "n/a", "lang": "en", "type": "text"}]}]}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T01:20:58.777Z"}, "title": "CVE Program Container", "references": [{"url": "https://kb.isc.org/docs/cve-2022-3924", "name": "CVE-2022-3924", "tags": ["vendor-advisory", "x_transferred"]}]}, {"problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-617", "lang": "en", "description": "CWE-617 Reachable Assertion"}]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2025-03-31T13:57:22.736047Z", "id": "CVE-2022-3924", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-03-31T13:58:09.212Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://kb.isc.org/docs/cve-2022-3924", "name": "CVE-2022-3924", "tags": ["vendor-advisory", "x_transferred"]}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T01:20:58.777Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2022-3924", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2025-03-31T13:57:22.736047Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-617", "description": "CWE-617 Reachable Assertion"}]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-03-31T13:57:36.938Z"}}], "cna": {"title": "named configured to answer from stale cache may terminate unexpectedly at recursive-clients soft quota", "source": {"discovery": "EXTERNAL"}, "credits": [{"lang": "en", "value": "ISC would like to thank Maksym Odinintsev from AWS for bringing this vulnerability to our attention."}], "impacts": [{"descriptions": [{"lang": "en", "value": "By sending specific queries to the resolver, an attacker can cause `named` to crash."}]}], "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}}], "affected": [{"vendor": "ISC", "product": "BIND 9", "versions": [{"status": "affected", "version": "9.16.12", "versionType": "custom", "lessThanOrEqual": "9.16.36"}, {"status": "affected", "version": "9.18.0", "versionType": "custom", "lessThanOrEqual": "9.18.10"}, {"status": "affected", "version": "9.19.0", "versionType": "custom", "lessThanOrEqual": "9.19.8"}, {"status": "affected", "version": "9.16.12-S1", "versionType": "custom", "lessThanOrEqual": "9.16.36-S1"}], "defaultStatus": "unaffected"}], "exploits": [{"lang": "en", "value": "We are not aware of any active exploits."}], "solutions": [{"lang": "en", "value": "Upgrade to the patched release most closely related to your current version of BIND 9: 9.16.37, 9.18.11, 9.19.9, or 9.16.37-S1."}], "datePublic": "2023-01-25T00:00:00.000Z", "references": [{"url": "https://kb.isc.org/docs/cve-2022-3924", "name": "CVE-2022-3924", "tags": ["vendor-advisory"]}], "workarounds": [{"lang": "en", "value": "Disabling `stale-answer-client-timeout` entirely or setting the timeout value to zero prevents the problem.\n\nIt is not possible to disable the limit on `recursive-clients`, though it could be set to a very high value in order to reduce the likelihood of encountering this scenario. However, this is not recommended as the limit on recursive clients is important for preventing exhaustion of server resources."}], "descriptions": [{"lang": "en", "value": "This issue can affect BIND 9 resolvers with `stale-answer-enable yes;` that also make use of the option `stale-answer-client-timeout`, configured with a value greater than zero.\n\nIf the resolver receives many queries that require recursion, there will be a corresponding increase in the number of clients that are waiting for recursion to complete. If there are sufficient clients already waiting when a new client query is received so that it is necessary to SERVFAIL the longest waiting client (see BIND 9 ARM `recursive-clients` limit and soft quota), then it is possible for a race to occur between providing a stale answer to this older client and sending an early timeout SERVFAIL, which may cause an assertion failure.\nThis issue affects BIND 9 versions 9.16.12 through 9.16.36, 9.18.0 through 9.18.10, 9.19.0 through 9.19.8, and 9.16.12-S1 through 9.16.36-S1."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "text", "description": "n/a"}]}], "providerMetadata": {"orgId": "404fd4d2-a609-4245-b543-2c944a302a22", "shortName": "isc", "dateUpdated": "2023-01-26T06:03:10.975Z"}}}, "cveMetadata": {"cveId": "CVE-2022-3924", "state": "PUBLISHED", "dateUpdated": "2025-03-31T13:58:09.212Z", "dateReserved": "2022-11-10T09:07:37.642Z", "assignerOrgId": "404fd4d2-a609-4245-b543-2c944a302a22", "datePublished": "2023-01-25T21:39:49.110Z", "assignerShortName": "isc"}, "dataVersion": "5.1"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:*", "matchCriteriaId": "FC5F91EF-B660-42FF-9B48-880299C9A128", "versionEndExcluding": "9.16.37", "versionStartIncluding": "9.16.12", "vulnerable": true}, {"criteria": "cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:*", "matchCriteriaId": "92119B97-ADE6-47C0-B3E2-3B05C08A0B99", "versionEndExcluding": "9.18.11", "versionStartIncluding": "9.18.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:*", "matchCriteriaId": "CB820E6D-F56C-4222-A3FF-3A02266FD68B", "versionEndExcluding": "9.19.9", "versionStartIncluding": "9.19.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:isc:bind:9.16.12:s1:*:*:supported_preview:*:*:*", "matchCriteriaId": "1B20F152-D0C3-4F07-83B3-5EA6B116F005", "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", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "This issue can affect BIND 9 resolvers with `stale-answer-enable yes;` that also make use of the option `stale-answer-client-timeout`, configured with a value greater than zero.\n\nIf the resolver receives many queries that require recursion, there will be a corresponding increase in the number of clients that are waiting for recursion to complete. If there are sufficient clients already waiting when a new client query is received so that it is necessary to SERVFAIL the longest waiting client (see BIND 9 ARM `recursive-clients` limit and soft quota), then it is possible for a race to occur between providing a stale answer to this older client and sending an early timeout SERVFAIL, which may cause an assertion failure.\nThis issue affects BIND 9 versions 9.16.12 through 9.16.36, 9.18.0 through 9.18.10, 9.19.0 through 9.19.8, and 9.16.12-S1 through 9.16.36-S1."}, {"lang": "es", "value": "Este problema puede afectar a los solucionadores BIND 9 con `stale-answer-enable yes;` que tambi\u00e9n utilizan la opci\u00f3n `stale-answer-client-timeout`, configurada con un valor mayor que cero. Si el solucionador recibe muchas consultas que requieren recursividad, habr\u00e1 un aumento correspondiente en la cantidad de clientes que est\u00e1n esperando que se complete la recursividad. Si ya hay suficientes clientes esperando cuando se recibe una nueva consulta de cliente, por lo que es necesario SERVFAIL al cliente que espera m\u00e1s tiempo (consulte el l\u00edmite y la cuota suave de `clientes recursivos` de BIND 9 ARM), entonces es posible que se produzca una carrera. entre proporcionar una respuesta obsoleta a este cliente anterior y enviar un SERVFAIL de tiempo de espera anticipado, que puede provocar un error de aserci\u00f3n. Este problema afecta a las versiones de BIND 9, 9.16.12 a 9.16.36, 9.18.0 a 9.18.10, 9.19.0 a 9.19.8 y 9.16.12-S1 a 9.16.36-S1."}], "id": "CVE-2022-3924", "lastModified": "2025-03-31T14:15:16.573", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "security-officer@isc.org", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2023-01-26T21:16:03.273", "references": [{"source": "security-officer@isc.org", "tags": ["Vendor Advisory"], "url": "https://kb.isc.org/docs/cve-2022-3924"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://kb.isc.org/docs/cve-2022-3924"}], "sourceIdentifier": "security-officer@isc.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-617"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-617"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"acknowledgement": "Red Hat would like to thank Maksym Odinintsev (AWS) for reporting this issue.", "affected_release": [{"advisory": "RHSA-2023:2792", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "bind9.16-32:9.16.23-0.14.el8", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2023-05-16T00:00:00Z"}, {"advisory": "RHSA-2023:2261", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "bind-32:9.16.23-11.el9", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2023-05-09T00:00:00Z"}], "bugzilla": {"description": "bind: sending specific queries to the resolver may cause a DoS", "id": "2164039", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2164039"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "verified"}, "cwe": "CWE-20", "details": ["This issue can affect BIND 9 resolvers with `stale-answer-enable yes;` that also make use of the option `stale-answer-client-timeout`, configured with a value greater than zero.\nIf the resolver receives many queries that require recursion, there will be a corresponding increase in the number of clients that are waiting for recursion to complete. If there are sufficient clients already waiting when a new client query is received so that it is necessary to SERVFAIL the longest waiting client (see BIND 9 ARM `recursive-clients` limit and soft quota), then it is possible for a race to occur between providing a stale answer to this older client and sending an early timeout SERVFAIL, which may cause an assertion failure.\nThis issue affects BIND 9 versions 9.16.12 through 9.16.36, 9.18.0 through 9.18.10, 9.19.0 through 9.19.8, and 9.16.12-S1 through 9.16.36-S1.", "A flaw was found in Bind. When resolver receives many queries requiring recursion, there will be a corresponding increase in the number of clients waiting for recursion to complete. This may, under certain conditions, lead to an assertion failure and a denial of service."], "mitigation": {"lang": "en:us", "value": "Disabling stale-answer-client-timeout entirely or setting the timeout value to zero prevents the problem.\nIt is not possible to disable the limit on recursive-clients, though it could be set to a very high value in order to reduce the likelihood of encountering this scenario. However, this is not recommended as the limit on recursive clients is important for preventing exhaustion of server resources."}, "name": "CVE-2022-3924", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "bind", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "bind", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "bind", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "dhcp", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2023-01-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-3924\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-3924\nhttps://kb.isc.org/docs/cve-2022-3924"], "statement": "The flaw exists in the implementation of the stale-answer-client-timeout option, which was first effectively introduced in BIND 9.16.12", "threat_severity": "Moderate"}