Vulnerability Details 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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.005
EPSS Ranking 64.3%
CVSS Severity
CVSS v2 Score 9.3
References
Products affected by CVE-2011-2883
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cpe:2.3:a:citrix:access_gateway:8.1
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cpe:2.3:a:citrix:access_gateway:9.0
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cpe:2.3:a:citrix:access_gateway:9.1