CVE-2018-1311

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This flaw has not been addressed in the maintained version of the library and has no current mitigation other than to disable DTD processing. This can be accomplished via the DOM using a standard parser feature, or via SAX using the XERCES_DISABLE_DTD environment variable."}, {"lang": "es", "value": "El analizador XML de Apache Xerces - versiones C 3.0.0 hasta 3.2.3, contiene un error de uso de la memoria previamente liberada desencadenado durante el escaneo de los DTD externos. Este error no se ha abordado en la versi\u00f3n mantenida de la biblioteca y no tiene una mitigaci\u00f3n actual que no sea deshabilitar el procesamiento de DTD. Esto se puede lograr por medio de DOM usando una funcionalidad de analizador est\u00e1ndar, o por medio de SAX usando la variable de entorno XERCES_DISABLE_DTD."}], "id": "CVE-2018-1311", "lastModified": "2026-06-17T01:50:59.290", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 6.8, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2019-12-18T20:15:15.493", "references": [{"source": "security@apache.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2024/02/16/1"}, {"source": "security@apache.org", "tags": ["Third Party Advisory"], "url": "https://access.redhat.com/errata/RHSA-2020:0702"}, {"source": "security@apache.org", "tags": ["Third Party Advisory"], "url": "https://access.redhat.com/errata/RHSA-2020:0704"}, {"source": "security@apache.org", "tags": ["Vendor Advisory"], "url": "https://lists.apache.org/thread.html/r48ea463fde218b1e4cc1a1d05770a0cea34de0600b4355315a49226b%40%3Cc-dev.xerces.apache.org%3E"}, {"source": "security@apache.org", "tags": ["Issue 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"af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AJYZUBGPVWJ7LEHRCMB5XVADQBNGURXD/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://marc.info/?l=xerces-c-users&m=157653840106914&w=2"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://www.debian.org/security/2020/dsa-4814"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://www.oracle.com/security-alerts/cpujan2022.html"}], "sourceIdentifier": "security@apache.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2020:0702", "cpe": "cpe:/o:redhat:enterprise_linux:6", "package": "xerces-c-0:3.0.1-21.el6_10", "product_name": "Red Hat Enterprise Linux 6", "release_date": "2020-03-04T00:00:00Z"}, {"advisory": "RHSA-2020:0704", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "xerces-c-0:3.1.1-10.el7_7", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2020-03-04T00:00:00Z"}], "bugzilla": {"description": "xerces-c: XML parser contains a use-after-free error triggered during the scanning of external DTDs", "id": "1788472", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1788472"}, "csaw": false, "cvss3": {"cvss3_base_score": "8.1", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "status": "verified"}, "cwe": "CWE-416", "details": ["The Apache Xerces-C 3.0.0 to 3.2.3 XML parser contains a use-after-free error triggered during the scanning of external DTDs. This flaw has not been addressed in the maintained version of the library and has no current mitigation other than to disable DTD processing. This can be accomplished via the DOM using a standard parser feature, or via SAX using the XERCES_DISABLE_DTD environment variable.", "A use-after-free vulnerability was found in xerces-c in the way an XML document is processed via the SAX API. Applications that process XML documents with an external Document Type Definition (DTD) may be vulnerable to this flaw. A remote attacker could exploit this flaw by creating a specially crafted XML file that would crash the application or potentially lead to arbitrary code execution."], "mitigation": {"lang": "en:us", "value": "Disable DTD processing by setting the environment variable `XERCES_DISABLE_DTD=1`. Please note that this feature was introduced in xerces-c upstream version 3.1.4 and is not available in older versions. The versions of xerces-c as shipped with Red Hat Enterprise Linux 6 and 7 did not include this feature."}, "name": "CVE-2018-1311", "package_state": [{"cpe": "cpe:/a:redhat:enterprise_mrg:3", "fix_state": "Out of support scope", "package_name": "xerces-c", "product_name": "Red Hat Enterprise MRG 3"}], "public_date": "2019-12-16T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2018-1311\nhttps://nvd.nist.gov/vuln/detail/CVE-2018-1311\nhttps://marc.info/?l=xerces-c-users&m=157653840106914&w=2"], "threat_severity": "Important"}

{}