Secunia Security Advisory - A vulnerability has been reported in Citrix XenApp Online Plug-in and Citrix Receiver for iPhone, which can be exploited by malicious people to conduct spoofing attacks.
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TITLE:
Citrix XenApp Online Plug-in / Receiver Certificate Spoofing
Vulnerability
SECUNIA ADVISORY ID:
SA37319
VERIFY ADVISORY:
http://secunia.com/advisories/37319/
DESCRIPTION:
A vulnerability has been reported in Citrix XenApp Online Plug-in and
Citrix Receiver for iPhone, which can be exploited by malicious people
to conduct spoofing attacks.
The vulnerability is caused due to an unspecified error when
processing SSL/TLS certificates. This can be exploited to e.g.
conduct Man-in-the-Middle (MitM) attacks via specially crafted
certificates.
SOLUTION:
Update to a fixed version.
http://www.citrix.com/English/SS/downloads/results.asp?productId=186&c1=sot2755
Citrix Online Plug-in for Windows:
Update to version version 11.0.150, 11.2, or later
Citrix Online Plug-in for Mac:
Update to version 11.0 or later.
Citrix Receiver for iPhone:
Update to version 1.0.3 or later.
PROVIDED AND/OR DISCOVERED BY:
Reported by the vendor.
ORIGINAL ADVISORY:
http://support.citrix.com/article/CTX123248
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