CVE-2022-39958

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A restricted resource, access to which would ordinarily be detected, may be exfiltrated from the backend, despite being protected by a web application firewall that uses CRS. Short subsections of a restricted resource may bypass pattern matching techniques and allow undetected access. 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 to upgrade to 3.2.2 and 3.3.3 respectively and to configure a CRS paranoia level of 3 or higher."}, {"lang": "es", "value": "OWASP ModSecurity Core Rule Set (CRS) esta afectado por una omisi\u00f3n del cuerpo de respuesta para exfiltrar secuencialmente secciones peque\u00f1as e indetectables de datos mediante el env\u00edo repetido de un campo de encabezado HTTP Range con un peque\u00f1o rango de bytes. Un recurso restringido, cuyo acceso ser\u00eda normalmente detectado, puede ser exfiltrado desde el backend, a pesar de estar protegido por un firewall de aplicaciones web que usa CRS. Las subsecciones cortas de un recurso restringido pueden omitir las t\u00e9cnicas de comparaci\u00f3n de patrones y permitir un acceso no detectado. 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 versiones 3.2.2 y 3.3.3 respectivamente y que configuren un nivel de paranoia de CRS de 3 o superior"}], "id": "CVE-2022-39958", "lastModified": "2026-06-17T04:58:35.230", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "vulnerability@ncsc.ch", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2022-39958", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2025-05-29T13:43:25.766555Z", "version": "2.0.3"}}]}, "published": "2022-09-20T07:15:12.417", "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"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Vendor Advisory"], "url": "https://coreruleset.org/20220919/crs-version-3-3-3-and-3-2-2-covering-several-cves/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2023/01/msg00033.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2025/08/msg00004.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HL2L2GF7GOCWPMJZDUE5OXDSXHGG3XUJ/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PD56EAYNGB6E6QQH62LAYCONOP6OH5DZ/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YPQ6CCMX3MU4A7MTCGQJA7VMJW3IQDXV/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://security.gentoo.org/glsa/202305-25"}], "sourceIdentifier": "vulnerability@ncsc.ch", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-863"}], "source": "vulnerability@ncsc.ch", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-116"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "mod_security_crs: Small range header leading to response rule set bypass", "id": "2131321", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2131321"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.3", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L", "status": "draft"}, "cwe": "CWE-863", "details": ["The OWASP ModSecurity Core Rule Set (CRS) is affected by a response body bypass to sequentially exfiltrate small and undetectable sections of data by repeatedly submitting an HTTP Range header field with a small byte range. A restricted resource, access to which would ordinarily be detected, may be exfiltrated from the backend, despite being protected by a web application firewall that uses CRS. Short subsections of a restricted resource may bypass pattern matching techniques and allow undetected access. 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 to upgrade to 3.2.2 and 3.3.3 respectively and to configure a CRS paranoia level of 3 or higher.", "A flaw was found in the OWASP ModSecurity Core Rule Set. Repeated payloads with a HTTP range header field with a small byte range allows a response body bypass, resulting in access to restricted resources."], "name": "CVE-2022-39958", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "mod_security_crs", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Will not fix", "package_name": "mod_security_crs", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Will not fix", "package_name": "mod_security_crs", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2022-09-19T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-39958\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-39958\nhttps://github.com/advisories/GHSA-3m69-hv34-fc7r"], "threat_severity": "Moderate"}

{}