Multiple stack-based multiple buffer overflows in the BRWOSSRE2UC.dll ActiveX Control in Sina UC2006 and earlier allow remote attackers to execute arbitrary code via a long string in the (1) astrVerion parameter to the SendChatRoomOpt function or (2) the astrDownDir parameter to the SendDownLoadFile function.

Insecure method vulnerability in Sina Inc. DLoader Class ActiveX Control allows remote attackers to overwrite arbitrary files via a URL in the first parameter to the DonwloadAndInstall method. NOTE: the provenance of this information is unknown; the details are obtained solely from third party information.