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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
9.3 UNKNOWN
NETWORK
MEDIUM
AV:N/AC:M/Au:N/C:C/I:C/A:C
mitreCNA
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 64%
VendorProductVersion
citrixaccess_gateway
8.1
citrixaccess_gateway
9.0
citrixaccess_gateway
9.1
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=928
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=928