Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Citrix | Access Gateway | 8.1 |
Related Weaknesses (CWE)
References
- http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=928
- http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=928
FAQ
What is CVE-2011-2883?
CVE-2011-2883 is a vulnerability with a CVSS score of 9.3 (HIGH). 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 che...
How severe is CVE-2011-2883?
CVE-2011-2883 has been rated HIGH with a CVSS base score of 9.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2011-2883?
Check the references section above for vendor advisories and patch information. Affected products include: Citrix Access Gateway.