{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"state": "PUBLISHED", "cveId": "CVE-2021-43304", "assignerOrgId": "48a46f29-ae42-4e1d-90dd-c1676c1e5e6d", "assignerShortName": "JFROG", "dateUpdated": "2024-08-04T03:55:28.381Z", "dateReserved": "2021-11-03T00:00:00.000Z", "datePublished": "2022-03-14T00:00:00.000Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "48a46f29-ae42-4e1d-90dd-c1676c1e5e6d", "shortName": "JFROG", "dateUpdated": "2022-11-04T00:00:00.000Z"}, "descriptions": [{"lang": "en", "value": "Heap buffer overflow in Clickhouse's LZ4 compression codec when parsing a malicious query. There is no verification that the copy operations in the LZ4::decompressImpl loop and especially the arbitrary copy operation wildCopy<copy_amount>(op, ip, copy_end), don\u2019t exceed the destination buffer\u2019s limits."}], "affected": [{"vendor": "yandex", "product": "clickhouse", "versions": [{"version": "unspecified", "status": "affected", "lessThan": "21.10.2.15-stable", "versionType": "custom"}]}], "references": [{"url": "https://jfrog.com/blog/7-rce-and-dos-vulnerabilities-found-in-clickhouse-dbms"}, {"name": "[debian-lts-announce] 20221104 [SECURITY] [DLA 3176-1] clickhouse security update", "tags": ["mailing-list"], "url": "https://lists.debian.org/debian-lts-announce/2022/11/msg00002.html"}], "problemTypes": [{"descriptions": [{"type": "CWE", "lang": "en", "description": "CWE-122", "cweId": "CWE-122"}]}]}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T03:55:28.381Z"}, "title": "CVE Program Container", "references": [{"url": "https://jfrog.com/blog/7-rce-and-dos-vulnerabilities-found-in-clickhouse-dbms", "tags": ["x_transferred"]}, {"name": "[debian-lts-announce] 20221104 [SECURITY] [DLA 3176-1] clickhouse security update", "tags": ["mailing-list", "x_transferred"], "url": "https://lists.debian.org/debian-lts-announce/2022/11/msg00002.html"}]}]}}

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{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:clickhouse:clickhouse:*:*:*:*:*:*:*:*", "matchCriteriaId": "4CD6B56E-9355-4A1F-9FF8-4FA097CF8AB4", "versionEndExcluding": "21.10.2.15", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*", "matchCriteriaId": "07B237A9-69A3-4A9C-9DA0-4E06BD37AE73", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Heap buffer overflow in Clickhouse's LZ4 compression codec when parsing a malicious query. There is no verification that the copy operations in the LZ4::decompressImpl loop and especially the arbitrary copy operation wildCopy<copy_amount>(op, ip, copy_end), don\u2019t exceed the destination buffer\u2019s limits."}, {"lang": "es", "value": "Un Desbordamiento del b\u00fafer de la pila en el c\u00f3dec de compresi\u00f3n LZ4 de Clickhouse cuando es analizada una consulta maliciosa. No es verificado que las operaciones de copia en el bucle LZ4::decompressImpl y especialmente la operaci\u00f3n de copia arbitraria wildCopy(copy_amount)(op, ip, copy_end), no excedan los l\u00edmites del buffer de destino"}], "id": "CVE-2021-43304", "lastModified": "2025-06-25T20:49:29.357", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "SINGLE", "availabilityImpact": "PARTIAL", "baseScore": 6.5, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 8.0, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2022-03-14T23:15:08.157", "references": [{"source": "reefs@jfrog.com", "tags": ["Exploit", "Third Party Advisory"], "url": "https://jfrog.com/blog/7-rce-and-dos-vulnerabilities-found-in-clickhouse-dbms"}, {"source": "reefs@jfrog.com", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2022/11/msg00002.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory"], "url": "https://jfrog.com/blog/7-rce-and-dos-vulnerabilities-found-in-clickhouse-dbms"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2022/11/msg00002.html"}], "sourceIdentifier": "reefs@jfrog.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-122"}], "source": "reefs@jfrog.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-787"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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