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+description = [[
+Detects a URL redirection and reflected XSS vulnerability in Allegro RomPager
+Web server. The vulnerability has been assigned CVE-2013-6786.
+
+The check is general enough (script tag injection via Referer header) that some
+other software may be vulnerable in the same way.
+]]
+
+---
+-- @see http-vuln-misfortune-cookie.nse
+--
+-- @usage nmap -p80 --script http-vuln-cve2013-6786 <target>
+-- @usage nmap -sV http-vuln-cve2013-6786 <target>
+--
+-- @output
+-- PORT   STATE SERVICE
+-- 80/tcp open  http
+-- | http-vuln-cve2013-6786:
+-- |   VULNERABLE:
+-- |   URL redirection and reflected XSS vulnerability in Allegro RomPager Web server
+-- |     State: VULNERABLE (Exploitable)
+-- |     IDs:  CVE:CVE-2013-6786
+-- |
+-- |     Devices based on Allegro RomPager web server are vulnerable to URL redirection
+-- |     and reflected XSS. If Referer header in a request to a non existing page, data
+-- |     can be injected into the resulting 404 page. This includes linking to an
+-- |     untrusted website and XSS injection.
+-- |     Disclosure date: 2013-07-1
+-- |     References:
+-- |_      https://antoniovazquezblanco.github.io/docs/advisories/Advisory_RomPagerXSS.pdf
+---
+
+author = "Vlatko Kosturjak <kost@linux.hr>"
+license = "Same as Nmap--See https://nmap.org/book/man-legal.html"
+categories = {"exploit","vuln"}
+
+local http = require "http"
+local shortport = require "shortport"
+local vulns = require "vulns"
+local stdnse = require "stdnse"
+local rand = require "rand"
+
+portrule = shortport.http
+
+action = function(host, port)
+  local vuln = {
+    title = 'URL redirection and reflected XSS vulnerability in Allegro RomPager Web server',
+    state = vulns.STATE.NOT_VULN,
+    description = [[
+Devices based on Allegro RomPager web server are vulnerable to URL redirection
+and reflected XSS. If Referer header in a request to a non existing page, data
+can be injected into the resulting 404 page. This includes linking to an
+untrusted website and XSS injection.]],
+    IDS = {
+      CVE = "CVE-2013-6786",
+      BID = "63721",
+    },
+    references = {
+      'https://antoniovazquezblanco.github.io/docs/advisories/Advisory_RomPagerXSS.pdf',
+    },
+    dates = {
+      disclosure = {year = '2013', month = '07', day = '1'},
+    },
+  }
+
+  local vuln_report = vulns.Report:new(SCRIPT_NAME, host, port)
+  local header = { ["Referer"] = '"><script>alert("XSS")</script><"' }
+  local open_session = http.get(host, port, "/"..rand.random_alpha(16), { header = header })
+  if open_session and open_session.status == 404 then
+    stdnse.debug2("got 404-that's good!")
+    if open_session.body:match('"><script>alert%("XSS"%)</script><"') then
+      vuln.state = vulns.STATE.EXPLOIT
+      -- vuln.extra_info = open_session.body
+      stdnse.debug1("VULNERABLE. Router answered correctly!")
+      return vuln_report:make_output(vuln)
+    end
+  end
+end