CVEvulnerability

CVE-2011-2883

9.3 HIGH Published 2011-07-21 Modified 2026-06-16 Official page ↗
Status
Modified
Published
2011-07-21
Last modified
2026-06-16
Assigner
[email protected]
CVSS 2.0 ([email protected])
9.3 HIGH — AV:N/AC:M/Au:N/C:C/I:C/A:C
Weaknesses
CWE-20

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.

Affected configurations

• citrix access gateway 8.1 • citrix access gateway 9.0 • citrix access gateway 9.1

Related

Weakness · CWE (1)

  • CWE-20 Improper Input Validation weakness

References