ForĬontent-Type: application/x-www-form-urlencoded The Content-Length header is straightforward: it specifies the length of the message body in bytes. Most HTTP request smuggling vulnerabilities arise because the HTTP specification provides two different ways to specify where a requestĮnds: the Content-Length header and the Transfer-Encoding header. How do HTTP request smuggling vulnerabilities arise? Smuggling attack, and it can have devastating results. It isĮffectively prepended to the next request, and so can interfere with the way the application processes that request. Here, the attacker causes part of their front-end request to be interpreted by the back-end server as the start of the next request. Otherwise, anĪttacker might be able to send an ambiguous request that gets interpreted differently by the front-end and back-end systems: In this situation, it is crucial that the front-end and back-end systems agree about the boundaries between requests. The receiving server parses the HTTP request headers to determine where one request ends and the next one begins: The protocol is very simple: HTTP requests are sent one after another, and When the front-end server forwards HTTP requests to a back-end server, it typically sends several requests over the same back-end networkĬonnection, because this is much more efficient and performant. This type of architecture is increasingly common, and in some cases unavoidable, in modern cloud-based applications. Users send requests toĪ front-end server (sometimes called a load balancer or reverse proxy) and this server forwards requests to one or more back-end servers. Today's web applications frequently employ chains of HTTP servers between users and the ultimate application logic. What happens in an HTTP request smuggling attack? In fact, most of major companies operating in ports, are corrupt, in this sense, with some of their staffers involved in smuggling schemes.HTTP request smuggling was first documented in 2005, and recently repopularized by PortSwigger's research on the topic. This method, technically, requires several perpetrators to encroach port territory, and that, according to Jan Janse, is hardly possible without the assistance of companies, operating in port. Still, the major “highway” of smuggling drugs remains the same – cocaine packages are hidden in containers, to be picked up after containers are offloaded. According to Jan Janse, MSC positively responded to warnings, facts and information, and thanks to active anti smuggling policy and practice among its’ crews, drop-off method, as of late, became much less common. Most active were the crew members of Montenegro nationality. Several liner companies were in police spotlight, the hottest was MSC, to such an extent, that several years back Dutch and Belgian law enforcement agencies threaten company with ships detentions. The latter method is nicknamed by anti drug law enforcement as “drop-off”, when one or several crew members drop cocaine packages into water in prearranged position in EU waters, to be picked up by land based members of drug ring. According to police data and investigations, drug rings deeply infiltrated both shipping companies and companies operating in ports, so that drugs smuggling is carried out not only by means of hiding drugs in containers, but also, with some of the crew assistance. Jan Janse, Chief of Seaport division of Rotterdam police, described in interview given to local media, methods used by drug trafficking rings to smuggle drugs into EU, using cargo ships, namely container ships.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |