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.
Vulnerability category: Input validationExecute code
Products affected by CVE-2011-2883
- cpe:2.3:a:citrix:access_gateway:9.1:*:enterprise:*:*:*:*:*
- cpe:2.3:a:citrix:access_gateway:9.0:*:enterprise:*:*:*:*:*
- cpe:2.3:a:citrix:access_gateway:8.1:*:enterprise:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2011-2883
0.08%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 35 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2011-2883
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
9.3
|
HIGH | AV:N/AC:M/Au:N/C:C/I:C/A:C |
8.6
|
10.0
|
NIST |
CWE ids for CVE-2011-2883
-
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.Assigned by: nvd@nist.gov (Primary)
References for CVE-2011-2883
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