CVE-2011-2593

Severity Score

8.8

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Integer overflow in the StartEpa method in the nsepacom ActiveX control (nsepa.exe) in Citrix Access Gateway Enterprise Edition Plug-in for Windows 9.x before 9.3-57.5 and 10.0 before 10.0-69.4 allows remote attackers to execute arbitrary code via a crafted Content-Length HTTP header, which triggers a heap-based buffer overflow.

Desbordamiento de enteros en el método StartEpa en el control nsepacom ActiveX (nsepa.exe) en Citrix Access Gateway Enterprise Edition Plug-in para Windows 9.x anterior a 9.3-57.5 y 10.0 anterior a 10.0-69.4 permite a atacantes remotos ejecutar código arbitrario a través de una cabecera Content-Length HTTP manipulada, lo que provoca un desbordamiento de buffer basado en memoria dinámica.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2011-06-29 CVE Reserved
2014-08-12 CVE Published
2024-08-06 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-189: Numeric Errors

CAPEC

References (4)

URL	Tag	Source
http://secunia.com/advisories/45299	Third Party Advisory
http://secunia.com/secunia_research/2012-26	X_refsource_misc
https://exchange.xforce.ibmcloud.com/vulnerabilities/77317	Vdb Entry

URL	Date	SRC

URL	Date	SRC
http://support.citrix.com/article/CTX134303	2017-08-29

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Citrix Search vendor "Citrix"		Access Gateway Plug-in Search vendor "Citrix" for product "Access Gateway Plug-in"				<= 9.3 Search vendor "Citrix" for product "Access Gateway Plug-in" and version " <= 9.3"		49-5, enterprise, windows		Affected
Citrix Search vendor "Citrix"		Access Gateway Plug-in Search vendor "Citrix" for product "Access Gateway Plug-in"				10.0 Search vendor "Citrix" for product "Access Gateway Plug-in" and version "10.0"		enterprise, windows		Affected