The intu-help-qb (aka Intuit Help System Async Pluggable Protocol) handlers in HelpAsyncPluggableProtocol.dll in Intuit QuickBooks 2009 through 2012, when Internet Explorer is used, allow remote attackers to cause a denial of service (application crash) via a long URI.
Memory leak in the intu-help-qb (aka Intuit Help System Async Pluggable Protocol) handlers in HelpAsyncPluggableProtocol.dll in Intuit QuickBooks 2009 through 2012, when Internet Explorer is used, allows remote attackers to cause a denial of service (memory consumption) via a URI with multiple references to the same name-value pair.