CVE-2011-2883

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.

CVSS v2.0 9.3 HIGH

9.3^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:M/Au:N/C:C/I:C/A:C

Exploitability : 8.6 / Impact : 10.0

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=928

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:citrix:access_gateway:8.1::enterprise:::::
	cpe:2.3:a:citrix:access_gateway:9.0::enterprise:::::
	cpe:2.3:a:citrix:access_gateway:9.1::enterprise:::::

History

No history.

Information

Published : 2011-07-21 23:55

Updated : 2024-02-04 17:54

NVD link : CVE-2011-2883

Mitre link : CVE-2011-2883

CVE.ORG link : CVE-2011-2883

JSON object : View

Products Affected

citrix

access_gateway

CWE

CWE-20

Improper Input Validation

{"id": "CVE-2011-2883", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 9.3, "accessVector": "NETWORK", "vectorString": "AV:N/AC:M/Au:N/C:C/I:C/A:C", "authentication": "NONE", "integrityImpact": "COMPLETE", "accessComplexity": "MEDIUM", "availabilityImpact": "COMPLETE", "confidentialityImpact": "COMPLETE"}, "acInsufInfo": false, "impactScore": 10.0, "baseSeverity": "HIGH", "obtainAllPrivilege": false, "exploitabilityScore": 8.6, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": true}]}, "published": "2011-07-21T23:55:04.317", "references": [{"url": "http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=928", "source": "cve@mitre.org"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-20"}]}], "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."}], "lastModified": "2011-07-22T04:00:00.000", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:citrix:access_gateway:8.1:*:enterprise:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "9A7BC4F8-DF07-499B-90CD-53EAB854014B"}, {"criteria": "cpe:2.3:a:citrix:access_gateway:9.0:*:enterprise:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0DCDF4DE-F0DF-427A-980C-62314FCE6A45"}, {"criteria": "cpe:2.3:a:citrix:access_gateway:9.1:*:enterprise:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F409FE7A-88D6-4FFB-8D78-0C0FCFB5DD8E"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}