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"Desbordamiento de entero en xpath.c en libxml2 v2.6.x hasta v2.6.32 y v2.7.x hasta v2.7.8, y libxml v1.8.16 y anteriores, permite a atacantes dependientes del contexto, provocar una denegaci\u00f3n de servicio (ca\u00edda) y posiblemente ejecutar c\u00f3digo de su elecci\u00f3n a trav\u00e9s de un archivo XML modificado que provoca un desbordamiento de buffer basado en memoria din\u00e1mica cuando se a\u00f1ade un nuevo espacio de nombres al nodo, relacionado con la manipulaci\u00f3n de expresiones XPath."}], "id": "CVE-2011-1944", "lastModified": "2025-04-11T00:51:21.963", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 9.3, "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "vectorString": "AV:N/AC:M/Au:N/C:C/I:C/A:C", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 10.0, 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{"affected_release": [{"advisory": "RHSA-2012:0017", "cpe": "cpe:/o:redhat:enterprise_linux:5", "package": "libxml2-0:2.6.26-2.1.12.el5_7.2", "product_name": "Red Hat Enterprise Linux 5", "release_date": "2012-01-11T00:00:00Z"}, {"advisory": "RHSA-2011:1749", "cpe": "cpe:/o:redhat:enterprise_linux:6", "package": "libxml2-0:2.7.6-4.el6", "product_name": "Red Hat Enterprise Linux 6", "release_date": "2011-12-05T00:00:00Z"}, {"advisory": "RHSA-2013:0217", "cpe": "cpe:/o:redhat:enterprise_linux:6", "package": "mingw32-libxml2-0:2.7.6-6.el6_3", "product_name": "Red Hat Enterprise Linux 6", "release_date": "2013-01-31T00:00:00Z"}], "bugzilla": {"description": "libxml2: Heap-based buffer overflow by adding new namespace node to an existing nodeset or merging nodesets", "id": "709747", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=709747"}, "csaw": false, "cvss": {"cvss_base_score": "5.1", "cvss_scoring_vector": "AV:N/AC:H/Au:N/C:P/I:P/A:P", "status": "verified"}, "cwe": "CWE-122", "details": ["Integer overflow in xpath.c in libxml2 2.6.x through 2.6.32 and 2.7.x through 2.7.8, and libxml 1.8.16 and earlier, allows context-dependent attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted XML file that triggers a heap-based buffer overflow when adding a new namespace node, related to handling of XPath expressions."], "name": "CVE-2011-1944", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:4", "fix_state": "Will not fix", "package_name": "libxml2", "product_name": "Red Hat Enterprise Linux 4"}], "public_date": "2011-05-27T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2011-1944\nhttps://nvd.nist.gov/vuln/detail/CVE-2011-1944"], "threat_severity": "Low"}