Multiple cross-site scripting (XSS) vulnerabilities in Consona Live Assistance, Dynamic Agent, and Subscriber Assistance allow remote attackers to inject arbitrary web script or HTML via crafted input to ASP pages, as demonstrated using the backurl parameter to sdccommon/verify/asp/n6plugindestructor.asp.

The SdcUser.TgConCtl ActiveX control in tgctlcm.dll in Consona Live Assistance, Dynamic Agent, and Subscriber Assistance allows remote attackers to discover the username of the client user, and consequently determine a pathname to a certain user directory, via a call to the GetUserName method.

The SdcUser.TgConCtl ActiveX control in tgctlcm.dll in Consona Live Assistance, Dynamic Agent, and Subscriber Assistance does not properly restrict access to the HTTPDownloadFile, HTTPGetFile, Install, and RunCmd methods, which allows remote attackers to execute arbitrary programs via a URL in the url argument to (1) HTTPDownloadFile or (2) HTTPGetFile.

Buffer overflow in the RunCmd method in the SdcUser.TgConCtl ActiveX control in tgctlcm.dll in Consona Live Assistance, Dynamic Agent, and Subscriber Assistance allows remote attackers to execute arbitrary code via vectors involving "CreateProcess params." NOTE: some of these details are obtained from third party information.

The Forgot Password implementation in Consona Live Assistance, Dynamic Agent, and Subscriber Assistance allows remote attackers to reset passwords of accounts with blank Hint questions and Hint answers by sending an empty value for each of these two Hint fields.

The site-locking implementation in the SdcWebSecureBase interface in tgctlcm.dll in Consona Live Assistance, Dynamic Agent, and Subscriber Assistance relies on a list of server domain names to restrict execution of ActiveX controls, which makes it easier for man-in-the-middle attackers to execute arbitrary code via a DNS hijacking attack.

The SdcWebSecureBase interface in tgctlcm.dll in Consona Live Assistance, Dynamic Agent, and Subscriber Assistance allows remote attackers to bypass intended restrictions on ActiveX execution via "instantiation/free attacks."

The default configuration of pluginlicense.ini for the SdcWebSecureBase interface in tgctlcm.dll in Consona Live Assistance, Dynamic Agent, and Subscriber Assistance, when downloaded from a server operated by Telefonica or possibly other companies, contains an incorrect DNS whitelist that includes the DNS hostnames of home computers of many persons, which allows remote attackers to bypass intended restrictions on ActiveX execution by hosting an ActiveX control on an applicable home web server.