CVE-2022-40303

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When parsing a multi-gigabyte XML document with the XML_PARSE_HUGE parser option enabled, several integer counters can overflow. This results in an attempt to access an array at a negative 2GB offset, typically leading to a segmentation fault."}, {"lang": "es", "value": "Se descubri\u00f3 un problema en libxml2 antes de la versi\u00f3n 2.10.3. Al analizar un documento XML de varios gigabytes con la opci\u00f3n de analizador XML_PARSE_HUGE habilitada, varios contadores de enteros pueden desbordarse. Esto da como resultado un intento de acceder a una matriz con un desplazamiento negativo de 2 GB, lo que normalmente provoca un error de segmentaci\u00f3n."}], "id": "CVE-2022-40303", "lastModified": "2026-10-14T18:17:04.783", "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": "nvd@nist.gov", "type": "Primary"}, {"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": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2022-40303", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2025-04-29T04:23:26.478461Z", "version": "2.0.3"}}]}, "published": "2022-11-23T00:15:11.007", "references": [{"source": "cve@mitre.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://seclists.org/fulldisclosure/2022/Dec/21"}, {"source": "cve@mitre.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://seclists.org/fulldisclosure/2022/Dec/24"}, {"source": "cve@mitre.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://seclists.org/fulldisclosure/2022/Dec/25"}, {"source": "cve@mitre.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://seclists.org/fulldisclosure/2022/Dec/26"}, {"source": "cve@mitre.org", "url": "http://seclists.org/fulldisclosure/2022/Dec/27"}, {"source": "cve@mitre.org", "tags": ["Patch", "Third Party Advisory"], "url": "https://gitlab.gnome.org/GNOME/libxml2/-/commit/c846986356fc149915a74972bf198abc266bc2c0"}, {"source": "cve@mitre.org", "tags": ["Release Notes", "Third Party Advisory"], "url": "https://gitlab.gnome.org/GNOME/libxml2/-/tags/v2.10.3"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://security.netapp.com/advisory/ntap-20221209-0003/"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://support.apple.com/kb/HT213531"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://support.apple.com/kb/HT213533"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://support.apple.com/kb/HT213534"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://support.apple.com/kb/HT213535"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://support.apple.com/kb/HT213536"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://seclists.org/fulldisclosure/2022/Dec/21"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://seclists.org/fulldisclosure/2022/Dec/24"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://seclists.org/fulldisclosure/2022/Dec/25"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://seclists.org/fulldisclosure/2022/Dec/26"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://seclists.org/fulldisclosure/2022/Dec/27"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://gitlab.gnome.org/GNOME/libxml2/-/commit/c846986356fc149915a74972bf198abc266bc2c0"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Release Notes", "Third Party Advisory"], "url": "https://gitlab.gnome.org/GNOME/libxml2/-/tags/v2.10.3"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://security.netapp.com/advisory/ntap-20221209-0003/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://support.apple.com/kb/HT213531"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://support.apple.com/kb/HT213533"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://support.apple.com/kb/HT213534"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://support.apple.com/kb/HT213535"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://support.apple.com/kb/HT213536"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "url": "https://cert-portal.siemens.com/productcert/html/ssa-337522.html"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "url": "https://cert-portal.siemens.com/productcert/html/ssa-341067.html"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "url": "https://cert-portal.siemens.com/productcert/html/ssa-398330.html"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "url": "https://cert-portal.siemens.com/productcert/html/ssa-556635.html"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "url": "https://cert-portal.siemens.com/productcert/html/ssa-625862.html"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "url": "https://cert-portal.siemens.com/productcert/html/ssa-769027.html"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-190"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-190"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"affected_release": [{"advisory": "RHSA-2023:0173", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "libxml2-0:2.9.7-15.el8_7.1", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2023-01-16T00:00:00Z"}, {"advisory": "RHSA-2023:0173", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "libxml2-0:2.9.7-15.el8_7.1", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2023-01-16T00:00:00Z"}, {"advisory": "RHSA-2024:0413", "cpe": "cpe:/a:redhat:rhel_eus:8.6", "package": "libxml2-0:2.9.7-13.el8_6.4", "product_name": "Red Hat Enterprise Linux 8.6 Extended Update Support", "release_date": "2024-01-25T00:00:00Z"}, {"advisory": "RHSA-2023:0338", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "libxml2-0:2.9.13-3.el9_1", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2023-01-23T00:00:00Z"}, {"advisory": "RHSA-2023:0338", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "libxml2-0:2.9.13-3.el9_1", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2023-01-23T00:00:00Z"}, {"advisory": "RHSA-2022:8841", "cpe": "cpe:/a:redhat:jboss_core_services:1", "package": "libxml2", "product_name": "Text-Only JBCS", "release_date": "2022-12-08T00:00:00Z"}], "bugzilla": {"description": "libxml2: integer overflows with XML_PARSE_HUGE", "id": "2136266", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2136266"}, "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-190", "details": ["An issue was discovered in libxml2 before 2.10.3. When parsing a multi-gigabyte XML document with the XML_PARSE_HUGE parser option enabled, several integer counters can overflow. This results in an attempt to access an array at a negative 2GB offset, typically leading to a segmentation fault.", "A flaw was found in libxml2. Parsing a XML document with the XML_PARSE_HUGE option enabled can result in an integer overflow because safety checks were missing in some functions. Also, the xmlParseEntityValue function didn't have any length limitation."], "name": "CVE-2022-40303", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "libxml2", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "libxml2", "product_name": "Red Hat Enterprise Linux 7"}], "public_date": "2022-10-14T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-40303\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-40303"], "statement": "This flaw is only triggered when parsing a multi-gigabyte XML document with the XML_PARSE_HUGE option enabled, and the most likely impact of this flaw is a Denial of Service in the application linked to the library. To reflect these conditions, Red Hat Product Security has rated this flaw as having a moderate security impact.", "threat_severity": "Moderate"}

{}