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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:apache:apr-util:*:*:*:*:*:*:*:*", "matchCriteriaId": "13B90E83-A762-4896-9E77-908FBA4B154A", "versionEndExcluding": "1.3.7", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*", "matchCriteriaId": "8333C974-DF5B-4098-A766-EB8D875817F5", "versionEndExcluding": "10.6.2", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:suse:linux_enterprise_server:9:*:*:*:*:*:*:*", "matchCriteriaId": "4CD2D897-E321-4CED-92E0-11A98B52053C", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:4.0:*:*:*:*:*:*:*", "matchCriteriaId": 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"matchCriteriaId": "7000D33B-F3C7-43E8-8FC7-9B97AADC3E12", "vulnerable": true}, {"criteria": "cpe:2.3:o:fedoraproject:fedora:11:*:*:*:*:*:*:*", "matchCriteriaId": "B3BB5EDB-520B-4DEF-B06E-65CA13152824", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:oracle:http_server:-:*:*:*:*:*:*:*", "matchCriteriaId": "E290BD43-5AB2-4641-B4AC-BC99FFBF7833", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*", "matchCriteriaId": "8BBBCFC4-2CFE-42A2-BE6F-2710EB3921A9", "versionEndExcluding": "2.2.12", "versionStartIncluding": "2.2.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The expat XML parser in the apr_xml_* interface in xml/apr_xml.c in Apache APR-util before 1.3.7, as used in the mod_dav and mod_dav_svn modules in the Apache HTTP Server, allows remote attackers to cause a denial of service (memory consumption) via a crafted XML document containing a large number of nested entity references, as demonstrated by a PROPFIND request, a similar issue to CVE-2003-1564."}, {"lang": "es", "value": "El parseador XML en el interfaz apr_xml_* en xml/apr_xml.c en Apache APR-util anteriores a v1.3.7 tal y como es utilizado en los m\u00f3dulos mod_dav y mod_dav_svn en el servidor HTTP de Apache, permite a atacantes remotos producir una denegaci\u00f3n de servicio (agotamiento de memoria) a trav\u00e9s de un documento XML manipulado que contiene un gran numero de referencias anidadas, como se demostr\u00f3 en la petici\u00f3n PROPFIND, una vulnerabilidad similar a CVE-2003-1564."}], "id": "CVE-2009-1955", "lastModified": "2026-06-16T23:08:25.870", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 5.0, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "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"}]}, "published": "2009-06-08T01:00:00.687", "references": [{"source": "cve@mitre.org", "tags": ["Mailing List", "Third Party Advisory"], "url": 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{"affected_release": [{"advisory": "RHSA-2009:1160", "cpe": "cpe:/a:redhat:jboss_enterprise_web_server:1::el4", "package": "httpd22-0:2.2.10-23.1.ep5.el4", "product_name": "JBEWS 1.0 for RHEL 4", "release_date": "2009-07-17T00:00:00Z"}, {"advisory": "RHSA-2010:0602", "cpe": "cpe:/a:redhat:certificate_system:7.3", "package": "ant-0:1.6.5-1jpp_1rh", "product_name": "Red Hat Certificate System 7.3", "release_date": "2010-08-04T00:00:00Z"}, {"advisory": "RHSA-2010:0602", "cpe": "cpe:/a:redhat:certificate_system:7.3", "package": "avalon-logkit-0:1.2-2jpp_4rh", "product_name": "Red Hat Certificate System 7.3", "release_date": "2010-08-04T00:00:00Z"}, {"advisory": "RHSA-2010:0602", "cpe": "cpe:/a:redhat:certificate_system:7.3", "package": "axis-0:1.2.1-1jpp_3rh", "product_name": "Red Hat Certificate System 7.3", "release_date": "2010-08-04T00:00:00Z"}, {"advisory": "RHSA-2010:0602", "cpe": "cpe:/a:redhat:certificate_system:7.3", "package": "classpathx-jaf-0:1.0-2jpp_6rh", "product_name": "Red Hat Certificate System 7.3", "release_date": "2010-08-04T00:00:00Z"}, {"advisory": "RHSA-2010:0602", "cpe": "cpe:/a:redhat:certificate_system:7.3", "package": "classpathx-mail-0:1.1.1-2jpp_8rh", "product_name": "Red Hat Certificate System 7.3", "release_date": "2010-08-04T00:00:00Z"}, {"advisory": "RHSA-2010:0602", "cpe": "cpe:/a:redhat:certificate_system:7.3", "package": "geronimo-specs-0:1.0-0.M4.1jpp_10rh", "product_name": "Red Hat Certificate System 7.3", "release_date": "2010-08-04T00:00:00Z"}, {"advisory": "RHSA-2010:0602", "cpe": "cpe:/a:redhat:certificate_system:7.3", "package": "jakarta-commons-modeler-0:2.0-3jpp_2rh", "product_name": "Red Hat Certificate System 7.3", "release_date": "2010-08-04T00:00:00Z"}, {"advisory": "RHSA-2010:0602", "cpe": "cpe:/a:redhat:certificate_system:7.3", "package": "log4j-0:1.2.12-1jpp_1rh", "product_name": "Red Hat Certificate System 7.3", "release_date": "2010-08-04T00:00:00Z"}, {"advisory": "RHSA-2010:0602", "cpe": 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"product_name": "Red Hat Certificate System 7.3", "release_date": "2010-08-04T00:00:00Z"}, {"advisory": "RHSA-2010:0602", "cpe": "cpe:/a:redhat:certificate_system:7.3", "package": "xerces-j2-0:2.7.1-1jpp_1rh", "product_name": "Red Hat Certificate System 7.3", "release_date": "2010-08-04T00:00:00Z"}, {"advisory": "RHSA-2010:0602", "cpe": "cpe:/a:redhat:certificate_system:7.3", "package": "xml-commons-0:1.3.02-2jpp_1rh", "product_name": "Red Hat Certificate System 7.3", "release_date": "2010-08-04T00:00:00Z"}, {"advisory": "RHSA-2009:1108", "cpe": "cpe:/o:redhat:enterprise_linux:3", "package": "httpd-0:2.0.46-73.ent", "product_name": "Red Hat Enterprise Linux 3", "release_date": "2009-06-16T00:00:00Z"}, {"advisory": "RHSA-2009:1107", "cpe": "cpe:/o:redhat:enterprise_linux:4", "package": "apr-util-0:0.9.4-22.el4_8.1", "product_name": "Red Hat Enterprise Linux 4", "release_date": "2009-06-16T00:00:00Z"}, {"advisory": "RHSA-2009:1107", "cpe": "cpe:/o:redhat:enterprise_linux:5", "package": "apr-util-0:1.2.7-7.el5_3.1", "product_name": "Red Hat Enterprise Linux 5", "release_date": "2009-06-16T00:00:00Z"}], "bugzilla": {"description": "apr-util billion laughs attack", "id": "504555", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=504555"}, "csaw": false, "cvss": {"cvss_base_score": "5.0", "cvss_scoring_vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "status": "verified"}, "details": ["The expat XML parser in the apr_xml_* interface in xml/apr_xml.c in Apache APR-util before 1.3.7, as used in the mod_dav and mod_dav_svn modules in the Apache HTTP Server, allows remote attackers to cause a denial of service (memory consumption) via a crafted XML document containing a large number of nested entity references, as demonstrated by a PROPFIND request, a similar issue to CVE-2003-1564."], "name": "CVE-2009-1955", "public_date": "2009-06-01T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2009-1955\nhttps://nvd.nist.gov/vuln/detail/CVE-2009-1955"], "threat_severity": "Moderate"}

{}