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Re-indent some scripts. Whitespace-only commit
https://secwiki.org/w/Nmap/Code_Standards
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@@ -44,94 +44,94 @@ categories = {"discovery", "intrusive"}
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portrule = shortport.http
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local function dbg(str,...)
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stdnse.print_debug(2,"http-open-redirect:"..str, ...)
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stdnse.print_debug(2,"http-open-redirect:"..str, ...)
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end
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local function dbgt(tbl)
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for k,v in pairs(tbl) do
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dbg(" %s = %s " , tostring(k), tostring(v))
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end
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for k,v in pairs(tbl) do
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dbg(" %s = %s " , tostring(k), tostring(v))
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end
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end
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local function getHostPort(parsed)
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local host, port = parsed.host, parsed.port
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-- if no port was found, try to deduce it from the scheme
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if ( not(port) ) then
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port = (parsed.scheme == 'https') and 443
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port = port or ((parsed.scheme == 'http') and 80)
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end
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return host, port
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local host, port = parsed.host, parsed.port
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-- if no port was found, try to deduce it from the scheme
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if ( not(port) ) then
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port = (parsed.scheme == 'https') and 443
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port = port or ((parsed.scheme == 'http') and 80)
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end
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return host, port
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end
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local function isRedirect(status)
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return status >= 300 and status <=399
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return status >= 300 and status <=399
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end
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-- This function checks if any query parameter was used as a forward destination
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-- @return false or a new query string to test
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local function checkLocationEcho(query, destination)
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dbg("checkLocationEcho(%s, %s)", tostring(query), tostring(destination))
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local q = url.parse_query(query);
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-- Check the values (and keys) and see if they are reflected in the location header
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for k,v in pairs(q) do
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local s,f = string.find(destination, v)
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if s == 1 then
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-- Build a new URL
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q[k] = "http%3A%2f%2fscanme.nmap.org%2f";
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return url.build_query(q)
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end
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end
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return false;
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dbg("checkLocationEcho(%s, %s)", tostring(query), tostring(destination))
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local q = url.parse_query(query);
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-- Check the values (and keys) and see if they are reflected in the location header
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for k,v in pairs(q) do
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local s,f = string.find(destination, v)
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if s == 1 then
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-- Build a new URL
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q[k] = "http%3A%2f%2fscanme.nmap.org%2f";
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return url.build_query(q)
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end
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end
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return false;
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end
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action = function(host, port)
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local crawler = httpspider.Crawler:new(host, port, nil, { scriptname = SCRIPT_NAME, redirect_ok = false } )
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crawler:set_timeout(10000)
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local crawler = httpspider.Crawler:new(host, port, nil, { scriptname = SCRIPT_NAME, redirect_ok = false } )
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crawler:set_timeout(10000)
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local results = {}
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while(true) do
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local status, r = crawler:crawl()
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-- if the crawler fails it can be due to a number of different reasons
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-- most of them are "legitimate" and should not be reason to abort
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if ( not(status) ) then
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if ( r.err ) then
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return stdnse.format_output(true, "ERROR: %s", r.reason)
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else
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break
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end
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end
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local response = r.response
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-- Was it a redirect?
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if response and response.header and response.header.location and isRedirect(response.status) then
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-- Were any parameters involved?
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local parsed = url.parse(tostring(r.url));
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local results = {}
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while(true) do
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local status, r = crawler:crawl()
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-- if the crawler fails it can be due to a number of different reasons
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-- most of them are "legitimate" and should not be reason to abort
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if ( not(status) ) then
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if ( r.err ) then
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return stdnse.format_output(true, "ERROR: %s", r.reason)
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else
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break
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end
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end
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local response = r.response
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-- Was it a redirect?
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if response and response.header and response.header.location and isRedirect(response.status) then
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-- Were any parameters involved?
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local parsed = url.parse(tostring(r.url));
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-- We are only interested in links which have parameters
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if parsed.query and #parsed.query > 0 then
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-- Now we need to check if any of the parameters were echoed in the location-header
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local destination = response.header.location
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local newQuery = checkLocationEcho(parsed.query, destination)
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--dbg("newQuery: %s" , tostring(newQuery))
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if newQuery then
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local host, port = getHostPort(parsed);
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local ppath = url.parse_path(parsed.path or "")
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local url = url.build_path(ppath)
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if parsed.params then url = url .. ";" .. parsed.params end
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url = url .. "?" .. newQuery
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dbg("Checking potential open redirect: %s:%s%s", host,port,url);
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local testResponse = http.get(host, port, url);
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--dbgt(testResponse)
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if isRedirect(testResponse.status) and testResponse.header.location == "http://scanme.nmap.org/" then
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table.insert(results, ("%s://%s:%s%s"):format(parsed.scheme, host, port,url))
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end
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end
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end
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end
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-- We are only interested in links which have parameters
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if parsed.query and #parsed.query > 0 then
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-- Now we need to check if any of the parameters were echoed in the location-header
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local destination = response.header.location
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local newQuery = checkLocationEcho(parsed.query, destination)
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--dbg("newQuery: %s" , tostring(newQuery))
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if newQuery then
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local host, port = getHostPort(parsed);
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local ppath = url.parse_path(parsed.path or "")
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local url = url.build_path(ppath)
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if parsed.params then url = url .. ";" .. parsed.params end
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url = url .. "?" .. newQuery
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dbg("Checking potential open redirect: %s:%s%s", host,port,url);
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local testResponse = http.get(host, port, url);
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--dbgt(testResponse)
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if isRedirect(testResponse.status) and testResponse.header.location == "http://scanme.nmap.org/" then
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table.insert(results, ("%s://%s:%s%s"):format(parsed.scheme, host, port,url))
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end
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end
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end
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end
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end
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if ( #results> 0 ) then
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return stdnse.format_output(true, results)
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end
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end
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if ( #results> 0 ) then
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return stdnse.format_output(true, results)
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end
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end
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