This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Cisco Secure Desktop. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within CSDWebInstaller.ocx ActiveX control. The vulnerable Cisco-signed ActiveX control verifies the signing authority names in the certificate chain but fails to properly verify the digital signature of an executable file that is downloaded and executed by the Cisco Secure Desktop installation process. A remote attacker can exploit this vulnerability to execute arbitrary code under the context of the browser.