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|
local nmap = require "nmap"
local shortport = require "shortport"
local http = require "http"
local stdnse = require "stdnse"
local string = require "string"
local table = require "table"
description = [[
Attempts to retrieve the server-status page for Apache webservers that
have mod_status enabled. If the server-status page exists and appears to
be from mod_status the script will parse useful information such as the
system uptime, Apache version and recent HTTP requests.
References:
* http://httpd.apache.org/docs/2.4/mod/mod_status.html
* https://blog.sucuri.net/2012/10/popular-sites-with-apache-server-status-enabled.html
* https://www.exploit-db.com/ghdb/1355/
* https://github.com/michenriksen/nmap-scripts
]]
---
--@usage nmap -p80 --script http-apache-server-status <target>
--@usage nmap -sV --script http-apache-server-status <target>
--
--@output
-- PORT STATE SERVICE
-- 80/tcp open http
-- | http-apache-server-status:
-- | Heading: Apache Server Status for example.com (via 127.0.1.1)
-- | Server Version: Apache/2.4.12 (Ubuntu)
-- | Server Built: Jul 24 2015 15:59:00
-- | Server Uptime: 53 minutes 31 seconds
-- | Server Load: 0.00 0.01 0.05
-- | VHosts:
-- |_ www.example.com:80 GET /server-status HTTP/1.1
--
-- @xmloutput
-- <elem key="Heading">Apache Server Status for example.com (via 127.0.1.1)</elem>
-- <elem key="Server Version">Apache/2.4.12 (Ubuntu)</elem>
-- <elem key="Server Built">Jul 24 2015 15:59:00</elem>
-- <elem key="Server Uptime">59 minutes 26 seconds</elem>
-- <elem key="Server Load">0.01 0.02 0.05</elem>
-- <table key="VHosts">
-- <elem>www.example.com:80</elem>
-- </table>
author = "Eric Gershman"
license = "Same as Nmap--See https://nmap.org/book/man-legal.html"
categories = {"discovery", "safe"}
portrule = function(host, port)
if not shortport.http(host, port) then
return false
end
if port.version and port.version.product then
return string.match(port.version.product, "Apache")
end
return true
end
action = function(host, port)
-- Perform a GET request for /server-status
local path = "/server-status"
local response = http.get(host,port,path)
local result = {}
-- Fail if there is no data in the response, the response body or if the HTTP status code is not successful
if not response or not response.status or response.status ~= 200 or not response.body then
stdnse.debug(1, "Failed to retrieve: %s", path)
return
end
-- Fail if this doesn't appear to be an Apache mod_status page
if not string.match(response.body, "Apache%sServer%sStatus") then
stdnse.debug(1, "%s does not appear to be a mod_status page", path)
return
end
result = stdnse.output_table()
-- Remove line breaks from response.body to handle html tags that span multiple lines
response.body = string.gsub(response.body, "\n", "")
-- Add useful data to the result table
result["Heading"] = string.match(response.body, "<h1>([^<]*)</h1>")
result["Server Version"] = string.match(response.body, "Server%sVersion:%s*([^<]*)</")
result["Server Built"] = string.match(response.body, "Server%sBuilt:%s*([^<]*)</")
result["Server Uptime"] = string.match(response.body, "Server%suptime:%s*([^<]*)</")
result["Server Load"] = string.match(response.body, "Server%sload:%s*([^<]*)</")
port.version = port.version or {}
if port.version.product == nil and (port.version.name_confidence or 0) <= 3 then
port.version.service = "http"
port.version.product = "Apache httpd"
local cpe = "cpe:/a:apache:http_server"
local version, extra = string.match(result["Server Version"], "^Apache/([%w._-]+)%s*(.-)$")
if version then
cpe = cpe .. ":" .. version
port.version.version = version
end
if extra then
port.version.extrainfo = extra
end
port.version.cpe = port.version.cpe or {}
table.insert(port.version.cpe, cpe)
nmap.set_port_version(host, port, "hardmatched")
end
result.VHosts = {}
local uniq_requests = {}
-- Parse the Apache client requests into the result table
for line in string.gmatch(response.body, "<td nowrap>.-</td></tr>") do
-- skip line if the request is empty
if not string.match(line, "<td%snowrap></td><td%snowrap></td></tr>") then
local vhost = string.match(line, ">([^<]*)</td><td")
uniq_requests[vhost] = 1
end
end
for request,count in pairs(uniq_requests) do
table.insert(result.VHosts,request)
end
table.sort(result.VHosts)
return result
end
|
