Latest Security News

MS15-034 - Vulnerability in HTTP.sys Could Allow Remote Code Execution Nmap script check

http://seclists.org/nmap-dev/2015/q2/37



add the below text to a .nse file and add in to nmap plugin folder

usage example included in the code

FYI




local shortport = require "shortport"
local http = require "http"
local stdnse = require "stdnse"
local string = require "string"
local vulns = require "vulns"

description = [[
Checks for a remote code execution vulnerability (MS15-034) in Microsoft Windows systems (CVE2015-2015-1635).

The script sends a specially crafted HTTP request with no impact on the system to detect this vulnerability. 
The affected versions are Windows 7, Windows Server 2008 R2, Windows 8, Windows Server 2012, Windows 8.1, 
and Windows Server 2012 R2.

References:
* https://technet.microsoft.com/library/security/MS15-034
]]

---
-- @usage nmap -sV --script vuln <target>
-- @usage nmap -p80 --script http-vuln-cve2015-1635.nse <target>
-- @usage nmap -sV --script http-vuln-cve2015-1635 --script-args uri='/anotheruri/' <target>
-- @output
-- PORT   STATE SERVICE REASON
-- 80/tcp open  http    syn-ack
-- | http-vuln-cve2015-1635: 
-- |   VULNERABLE:
-- |   Remote Code Execution in HTTP.sys (MS15-034)
-- |     State: VULNERABLE (Exploitable)
-- |     IDs:  CVE:CVE-2015-1635
-- |       A remote code execution vulnerability exists in the HTTP protocol stack (HTTP.sys) that is 
-- |       caused when HTTP.sys improperly parses specially crafted HTTP requests. An attacker who 
-- |       successfully exploited this vulnerability could execute arbitrary code in the context of the System account.
-- |           
-- |     Disclosure date: 2015-04-14
-- |     References:
-- |       https://technet.microsoft.com/en-us/library/security/ms15-034.aspx
-- |_      http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-1635
-- @args http-vuln-cve2015-1635.uri URI to use in request. Default: /
---

author = {"Kl0nEz", "Paulino <calderon()websec.mx>"}
license = "Same as Nmap--See http://nmap.org/book/man-legal.html"
categories = {"vuln", "safe"}

portrule = shortport.http

action = function(host, port)
  local uri = stdnse.get_script_args(SCRIPT_NAME..".uri") or "/"
  local vuln_report = vulns.Report:new(SCRIPT_NAME, host, port)
  local vuln = {
    title = 'Remote Code Execution in HTTP.sys (MS15-034)',
    state = vulns.STATE.NOT_VULN, 
    description = [[
A remote code execution vulnerability exists in the HTTP protocol stack (HTTP.sys) that is 
caused when HTTP.sys improperly parses specially crafted HTTP requests. An attacker who 
successfully exploited this vulnerability could execute arbitrary code in the context of the System account.
    ]],
    IDS = {CVE = 'CVE-2015-1635'},
    references = {
      'https://technet.microsoft.com/en-us/library/security/ms15-034.aspx'
    },
    dates = {
      disclosure = {year = '2015', month = '04', day = '14'},
    }
  }
  local options = {header={}}
  options['header']['Host'] = stdnse.generate_random_string(8)
  options['header']['Range'] = "bytes=0-18446744073709551615"

  local response = http.get(host, port, uri, options)
  if response.body then
    local title = string.match(response.body, "<[Tt][Ii][Tt][Ll][Ee][^>]*>([^<]*)</[Tt][Ii][Tt][Ll][Ee]>")

    if title == "Requested Range Not Satisfiable" then
      vuln.state = vulns.STATE.EXPLOIT
    end
  end
  return vuln_report:make_output(vuln)
end

more security links and tools

Some "nice to add"  tools  for incident investigation

  1. Malwr - free online Sand-box check -https://malwr.com/analysis/
  2. Free online URL malware scan for websites - https://urlquery.net/index.php
  3. ost file reader for extracting outlook ost files without username password for mailbox investigation -http://www.freeviewer.org/ost/



Some PRISM post mortal conclusions




Following the understanding of NSA  ways of intercepting our digital communication, and the shutting down of services like LavaBit email encryption services,here our some quick conclusions

  1. Never trust a third party in holding your encryption keys ,so if Google will start encrypt your email on their hard disks (like they recently published ) , they will still hold the keys and some day will hand them to the NSA or another agencies.
  2. try to use open source as much as we can ,you don't know what or when a commercial company will put a backdoor for NSA or alike.
  3. make our "followers " life harder using software and services like: GPG, Silent Circle, Tails, OTR, TrueCrypt, BleachBit




OSFOOLER - an upcoming tool for OS fingerprinting evasion

Using commercial tools to secure your network is recommended, but it is necessary to be one step further to keep the system secure. With this technique you can give that step in order defend your servers against the first phase of all attacks Fingerprinting. This is done by intercepting all traffic that your box is sending in order to camouflage and modify in real time the flags in TCP/IP packets that discover your system.
This tool is a practical approach for detecting and defeating:
  • Active remote OS fingerprinting: like Nmap or Xprobe
  • Passive remote OS fingeprinting: like p0f or pfsense
  • Commercial engines like Sourcefire's FireSiGHT OS fingerprinting
Some features are:
  • No need for kernel modification or patches
  • Highly portable
  • Will emulate any OS
  • Capable of handling nmap and p0f fingerprint database (beta phase)
  • Transparent for the user
  • Undetectable for the attacker
  • Available for your Linux laptop, server and mobile device
Sorry guys, remote OS fingerprinting is over...

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Obama's visit to Israel leads to Another DDoS campaign against Israel sites

When investigating  the Israel's bank attack:
The attackers communicates on twitter .
They publish links that instruct what site to attack
They are using an DDOS attack which include a special application for SYN FLOOD or ICMP FLOOD on port 80,443
So if you are working for an Israelis vendor ,you should be looking for large sync tcp packets or icmp packets traffic on port 80 or 443  

I will keep watching the osint chennels ....

here are some recent  details :
The tool they recommend to use :





Twitter communication and instructions



Site  attacking instructions:




Online tool


Pcap finger print of the SYN PACKET



security tools tracking site -FYI

.
.A nice site that follows new security tools


http://www.toolswatch.org