CVE-2011-2883

Severity CVSS v4.0:

Pending analysis

Type:

CWE-20 Input Validation

Publication date:

21/07/2011

Last modified:

11/04/2025

Description

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.

Impact

Vector 2.0

AV:N/AC:M/Au:N/C:C/I:C/A:C CVSS v2.0 Severity and Metrics:

Base Score: 9.30 HIGH
Vector: AV:N/AC:M/Au:N/C:C/I:C/A:C

Attack Vector (AV): Network
Attack Complexity (AC): Medium
Authentication (Au): None
Confidentiality (C): Complete
Integrity (I): Complete
Availability (A): Complete

Base Score 2.0

9.30

Severity 2.0

HIGH

Vulnerable products and versions

CPE	From	Up to
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:::::

To consult the complete list of CPE names with products and versions, see this page

CVE-2011-2883

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools