{"dataType": "CVE_RECORD", "dataVersion": "5.0", "cveMetadata": {"state": "PUBLISHED", "cveId": "CVE-2022-39956", "assignerOrgId": "455daabc-a392-441d-aa46-37d35189897c", "assignerShortName": "NCSC.ch", "dateUpdated": "2023-05-21T00:00:00", "dateReserved": "2022-09-05T00:00:00", "datePublished": "2022-09-20T00:00:00"}, "containers": {"cna": {"title": "Partial rule set bypass in OWASP ModSecurity Core Rule Set for HTTP multipart requests using character encoding in the Content-Type or Content-Transfer-Encoding header", "providerMetadata": {"orgId": "455daabc-a392-441d-aa46-37d35189897c", "shortName": "NCSC.ch", "dateUpdated": "2023-05-21T00:00:00"}, "descriptions": [{"lang": "en", "value": "The OWASP ModSecurity Core Rule Set (CRS) is affected by a partial rule set bypass for HTTP multipart requests by submitting a payload that uses a character encoding scheme via the Content-Type or the deprecated Content-Transfer-Encoding multipart MIME header fields that will not be decoded and inspected by the web application firewall engine and the rule set. The multipart payload will therefore bypass detection. A vulnerable backend that supports these encoding schemes can potentially be exploited. The legacy CRS versions 3.0.x and 3.1.x are affected, as well as the currently supported versions 3.2.1 and 3.3.2. Integrators and users are advised upgrade to 3.2.2 and 3.3.3 respectively. The mitigation against these vulnerabilities depends on the installation of the latest ModSecurity version (v2.9.6 / v3.0.8)."}], "affected": [{"vendor": "OWASP", "product": "ModSecurity Core Rule Set", "versions": [{"version": "3.0.x", "status": "affected"}, {"version": "3.1.x", "status": "affected"}, {"version": "unspecified", "lessThanOrEqual": "3.2.1", "status": "affected", "versionType": "custom"}, {"version": "unspecified", "lessThanOrEqual": "3.3.2", "status": "affected", "versionType": "custom"}]}], "references": [{"url": "https://coreruleset.org/20220919/crs-version-3-3-3-and-3-2-2-covering-several-cves/"}, {"name": "FEDORA-2022-90708b46e3", "tags": ["vendor-advisory"], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PD56EAYNGB6E6QQH62LAYCONOP6OH5DZ/"}, {"name": "FEDORA-2022-85a85c84b3", "tags": ["vendor-advisory"], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YPQ6CCMX3MU4A7MTCGQJA7VMJW3IQDXV/"}, {"name": "FEDORA-2022-1fd73a5285", "tags": ["vendor-advisory"], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HL2L2GF7GOCWPMJZDUE5OXDSXHGG3XUJ/"}, {"name": "[debian-lts-announce] 20230130 [SECURITY] [DLA 3293-1] modsecurity-crs security update", "tags": ["mailing-list"], "url": "https://lists.debian.org/debian-lts-announce/2023/01/msg00033.html"}, {"name": "GLSA-202305-25", "tags": ["vendor-advisory"], "url": "https://security.gentoo.org/glsa/202305-25"}], "credits": [{"lang": "en", "value": "@terjanq (Jan Gora)"}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "LOW", "baseScore": 7.3, "baseSeverity": "HIGH"}}], "problemTypes": [{"descriptions": [{"type": "CWE", "lang": "en", "description": "CWE-863 Incorrect Authorization", "cweId": "CWE-863"}]}], "x_generator": {"engine": "Vulnogram 0.0.9"}, "source": {"discovery": "EXTERNAL"}, "solutions": [{"lang": "en", "value": "upgrade to 3.2.2 or 3.3.3"}]}}}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:owasp:owasp_modsecurity_core_rule_set:*:*:*:*:*:*:*:*", "matchCriteriaId": "E9D7A320-7FDD-43B5-92AD-E8EFD58D278E", "versionEndExcluding": "3.2.2", "versionStartIncluding": "3.0.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:owasp:owasp_modsecurity_core_rule_set:*:*:*:*:*:*:*:*", "matchCriteriaId": "7D378AD7-0734-4F54-B4FB-975DDF1C80A4", "versionEndExcluding": "3.3.3", "versionStartIncluding": "3.3.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*", "matchCriteriaId": "80E516C0-98A4-4ADE-B69F-66A772E2BAAA", "vulnerable": true}, {"criteria": "cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*", "matchCriteriaId": "5C675112-476C-4D7C-BCB9-A2FB2D0BC9FD", "vulnerable": true}, {"criteria": "cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*", "matchCriteriaId": "E30D0E6F-4AE8-4284-8716-991DFA48CC5D", "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"}]}], "descriptions": [{"lang": "en", "value": "The OWASP ModSecurity Core Rule Set (CRS) is affected by a partial rule set bypass for HTTP multipart requests by submitting a payload that uses a character encoding scheme via the Content-Type or the deprecated Content-Transfer-Encoding multipart MIME header fields that will not be decoded and inspected by the web application firewall engine and the rule set. The multipart payload will therefore bypass detection. A vulnerable backend that supports these encoding schemes can potentially be exploited. The legacy CRS versions 3.0.x and 3.1.x are affected, as well as the currently supported versions 3.2.1 and 3.3.2. Integrators and users are advised upgrade to 3.2.2 and 3.3.3 respectively. The mitigation against these vulnerabilities depends on the installation of the latest ModSecurity version (v2.9.6 / v3.0.8)."}, {"lang": "es", "value": "OWASP ModSecurity Core Rule Set (CRS) est\u00e1 afectado por una omisi\u00f3n parcial del conjunto de reglas para peticiones HTTP multiparte al enviar una carga \u00fatil que usa un esquema de codificaci\u00f3n de caracteres por medio del Content-Type o los campos de cabecera MIME multiparte obsoletos que no ser\u00e1n decodificados e inspeccionados por el motor del firewall de aplicaciones web y el conjunto de reglas. Por lo tanto, la carga \u00fatil multiparte omitir\u00e1 la detecci\u00f3n. Un backend vulnerable que soporte estos esquemas de codificaci\u00f3n puede ser potencialmente explotado. Las versiones heredadas de CRS 3.0.x y 3.1.x est\u00e1n afectadas, as\u00ed como las versiones 3.2.1 y 3.3.2 actualmente soportadas. Es recomendado a integradores y usuarios actualizar a las versiones 3.2.2 y 3.3.3 respectivamente. La mitigaci\u00f3n contra estas vulnerabilidades depende de la instalaci\u00f3n de la \u00faltima versi\u00f3n de ModSecurity (versiones v2.9.6 / v3.0.8)"}], "id": "CVE-2022-39956", "lastModified": "2023-11-07T03:50:41.713", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 7.3, "baseSeverity": "HIGH", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.4, "source": "vulnerability@ncsc.ch", "type": "Secondary"}]}, "published": "2022-09-20T07:15:12.293", "references": [{"source": "vulnerability@ncsc.ch", "tags": ["Patch", "Vendor Advisory"], "url": "https://coreruleset.org/20220919/crs-version-3-3-3-and-3-2-2-covering-several-cves/"}, {"source": "vulnerability@ncsc.ch", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2023/01/msg00033.html"}, {"source": "vulnerability@ncsc.ch", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HL2L2GF7GOCWPMJZDUE5OXDSXHGG3XUJ/"}, {"source": "vulnerability@ncsc.ch", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PD56EAYNGB6E6QQH62LAYCONOP6OH5DZ/"}, {"source": "vulnerability@ncsc.ch", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YPQ6CCMX3MU4A7MTCGQJA7VMJW3IQDXV/"}, {"source": "vulnerability@ncsc.ch", "url": "https://security.gentoo.org/glsa/202305-25"}], "sourceIdentifier": "vulnerability@ncsc.ch", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-116"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-863"}], "source": "vulnerability@ncsc.ch", "type": "Secondary"}]}

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