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>> Citrix Program Neighborhood Client Overflow and Inormation Disclosure

Title : Citrix Program Neighborhood Client Overflow and Inormation Disclosure
VUPEN ID : VUPEN/ADV-2005-2944
CVE ID : CVE-2005-3652 - CVE-2005-4412
Rated as : Moderate Risk 
Remotely Exploitable : Yes
Locally Exploitable : Yes
Release Date : 2005-12-16


Technical Description    Receive VUPEN Security alerts in a Text format  Receive VUPEN Security alerts in a PDF format  Receive VUPEN Security alerts in an XML format 

Two vulnerabilities were identified in Citrix Program Neighborhood Client, which could be exploited by attackers to execute arbitrary commands or disclose sensitive information.

The first issue is due to a buffer overflow error in the UDP based application enumeration mechanism that does not properly handle overly long application names, which could be exploited by attackers to compromise a vulnerable system. For this vulnerability to be exploited the client would have to be explicitly configured to point to a malicious UDP server, or a malicious UDP server would have to be installed on the same subnet as the client.

The second flaw is due to an error in the mechanism used to cache user passwords, which could be exploited by a malicious user to extract the clear text password using a password viewing tool.

Affected Products

Citrix Program Neighborhood Client version 9.1 and prior (32-bit and 64-bit Windows)

Solution

Upgrade to Citrix Program Neighborhood Client version 9.150 :
http://www.citrix.com/English/SS/downloads/downloads.asp?dID=2755

References

http://www.vupen.com/english/advisories/2005/2944
http://support.citrix.com/article/CTX108354
http://support.citrix.com/article/CTX108108

Credits

Vulnerabilities reported by iDEFENSE and Dr. Alex Danilychev

ChangeLog

2005-12-16 : Initial release

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