{"containers": {"cna": {"affected": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "descriptions": [{"lang": "en", "value": "The NSEPA.NsepaCtrl.1 ActiveX control in nsepa.ocx in Citrix Access Gateway Enterprise Edition 8.1 before 8.1-67.7, 9.0 before 9.0-70.5, and 9.1 before 9.1-96.4 attempts to validate signed DLLs by checking the certificate subject, not the signature, which allows man-in-the-middle attackers to execute arbitrary code via HTTP header data referencing a DLL that was signed with a crafted certificate."}], "problemTypes": [{"descriptions": [{"description": "n/a", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2011-07-21T23:00:00.000Z", "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre"}, "references": [{"name": "20110714 Citrix Access Gateway ActiveX Arbitrary Libary Loading Vulnerability", "tags": ["third-party-advisory", "x_refsource_IDEFENSE"], "url": "http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=928"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "cve@mitre.org", "ID": "CVE-2011-2883", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "n/a", "version": {"version_data": [{"version_value": "n/a"}]}}]}, "vendor_name": "n/a"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "The NSEPA.NsepaCtrl.1 ActiveX control in nsepa.ocx in Citrix Access Gateway Enterprise Edition 8.1 before 8.1-67.7, 9.0 before 9.0-70.5, and 9.1 before 9.1-96.4 attempts to validate signed DLLs by checking the certificate subject, not the signature, which allows man-in-the-middle attackers to execute arbitrary code via HTTP header data referencing a DLL that was signed with a crafted certificate."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "n/a"}]}]}, "references": {"reference_data": [{"name": "20110714 Citrix Access Gateway ActiveX Arbitrary Libary Loading Vulnerability", "refsource": "IDEFENSE", "url": "http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=928"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-06T23:15:31.606Z"}, "title": "CVE Program Container", "references": [{"name": "20110714 Citrix Access Gateway ActiveX Arbitrary Libary Loading Vulnerability", "tags": ["third-party-advisory", "x_refsource_IDEFENSE", "x_transferred"], "url": "http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=928"}]}]}, "cveMetadata": {"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "cveId": "CVE-2011-2883", "datePublished": "2011-07-21T23:00:00.000Z", "dateReserved": "2011-07-21T00:00:00.000Z", "dateUpdated": "2024-09-17T01:42:00.092Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:citrix:access_gateway:8.1:*:enterprise:*:*:*:*:*", "matchCriteriaId": "9A7BC4F8-DF07-499B-90CD-53EAB854014B", "vulnerable": true}, {"criteria": "cpe:2.3:a:citrix:access_gateway:9.0:*:enterprise:*:*:*:*:*", "matchCriteriaId": "0DCDF4DE-F0DF-427A-980C-62314FCE6A45", "vulnerable": true}, {"criteria": "cpe:2.3:a:citrix:access_gateway:9.1:*:enterprise:*:*:*:*:*", "matchCriteriaId": "F409FE7A-88D6-4FFB-8D78-0C0FCFB5DD8E", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The NSEPA.NsepaCtrl.1 ActiveX control in nsepa.ocx in Citrix Access Gateway Enterprise Edition 8.1 before 8.1-67.7, 9.0 before 9.0-70.5, and 9.1 before 9.1-96.4 attempts to validate signed DLLs by checking the certificate subject, not the signature, which allows man-in-the-middle attackers to execute arbitrary code via HTTP header data referencing a DLL that was signed with a crafted certificate."}, {"lang": "es", "value": "El control activeX NSEPA.NsepaCtrl.1 en nsepa.ocx de Citrix Access Gateway Enterprise Edition v8.1 antes de v8.1-67.7, v9.0 antes de v9.0-70.5 y v9.1 antes de v9.1-96.4 intenta validar archivos DLL firmados mediante el control del asunto del certificado en lugar de la firma, que permite a los atancante de hombre en el medio ejecutar c\u00f3digo arbitrario a trav\u00e9s de datos de cabecera HTTP que referencian a una DLL firmada por un certificado manipulado."}], "id": "CVE-2011-2883", "lastModified": "2026-04-29T01:13:23.040", "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, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": true}]}, "published": "2011-07-21T23:55:04.317", "references": [{"source": "cve@mitre.org", "url": "http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=928"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=928"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-20"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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